FCC ID: SQG-LYRAS Bluetooth v5.3 PCB Module with integrated antenna (Silicon Labs EFR32BG22)

Lyra S - Bluetooth Module Datasheet v1.0 INTRODUCTION 1 The Lyra S is a module designed and built to meet the performance, security, and reliability requirements of battery-powered IoT products running on Bluetooth networks. Based on the Silicon Labs EFR32BG22 SoC, the Lyra S enables Bluetooth Low Energy connectivity while delivering best-in-

class RF range and performance, future-proof capability for feature and OTA firmware updates, enhanced security features, and low energy consumption. Lyra S modules are a full solution that comes with fully upgradeable, robust software stacks, world-wide regulatory certifications, advanced development and debugging tools, and support that will minimize and simplify the engineering and development of your end-products helping to accelerate their time-to-market. The Lyra S is intended for a broad range of applications, including:

Asset Tags and Beacons Portable Medical Sports, Fitness, and Wellness devices Connected Home Industrial and Building Automation Bluetooth mesh Low Power Nodes KEY FEATURES Bluetooth 5.2 Built-in antenna or RF pin Up to 6 dBm TX power

-98.6 dBm BLE RX sensitivity at 1 Mbps 32-bit ARM Cortex-M33 core at up to 76.8 MHz 512/32 kB of Flash/RAM memory Optimal selection of MCU peripherals 25 GPIO pins 6 mm 6 mm 1.1 mm https://www.lairdconnect.com/

1 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852 2762 4823 App Note Title Application Note 2 FEATURE LIST Supported Protocols Bluetooth Low Energy (Bluetooth 5.2) Direction finding 1M, 2M, and LE Coded PHYs Bluetooth Mesh Low Power Node Wireless System-on-Chip 2.4 GHz radio TX power up to 6 dBm High-performance 32-bit ARM Cortex-M33 with DSP instruction and floating-point unit for efficient signal processing Up to 512 kB flash program memory 32 kB RAM data memory Embedded Trace Macrocell (ETM) for advanced debugging High-Receiver Performance

-106.4 dBm sensitivity (0.1% BER) at 125 kbps GFSK

-102.3 dBm sensitivity (0.1% BER) at 500 kbps GFSK

-98.6 dBm sensitivity (0.1% BER) at 1 Mbps GFSK

-95.9 dBm sensitivity (0.1% BER) at 2 Mbps GFSK Low-Energy Consumption 4.2 mA RX current at 1 Mbps GFSK 4.6 mA TX current at 0 dBm output power 26 A/MHz in Active Mode (EM0) 1.40 A EM2 DeepSleep current (RTCC running from LFXO, Full RAM retention) Regulatory Certifications FCC EU ISED/ISEDC MIC/TELEC KC Wide Operating Range 1.8 to 3.8 V

-40 to +105 C and -40 to +85 C versions available Dimensions 6 mm 6 mm 1.1 mm Security Features Secure Boot with Root of Trust and Secure Loader

(RTSL) Hardware Cryptographic Acceleration for AES128/256, SHA-1, SHA-2 (up to 256-bit), ECC (up to 256-bit), ECDSA, and ECDH True Random Number Generator (TRNG) compliant with NIST SP800-90 and AIS-31 ARM TrustZone Secure Debug with lock/unlock Wide Selection of MCU Peripherals Analog to Digital Converter (ADC) 12-bit @ 1 Msps 16-bit @ 76.9 ksps 25 General Purpose I/O pins with output state retention and asynchronous interrupts 8 Channel DMA Controller 12 Channel Peripheral Reflex System (PRS) 4 16-bit Timer/Counter with 3 Compare/Capture/PWM channels 1 32-bit Timer/Counter with 3 Compare/Capture/PWM channels 32-bit Real Time Counter 24-bit Low Energy Timer for waveform generation 1 Watchdog Timer 2 Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S) 1 Enhanced Universal Asynchronous Receiver/Transmitter (EUART) 2 I2C interface with SMBus support Digital microphone interface (PDM) RFSENSE with selective OOK mode https://www.lairdconnect.com/

2 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note 3 ORDERING INFORMATION Table 1: Ordering information Ordering Code Protocol Stack 453-00091R Bluetooth 5.2 6 dBm Yes 512 32 25

-40 to 105 C TX Power Rating Antenna 76.8 MHz RF Shield Built-in Flash

(kB) RAM

(kB) LF Clock GPIO Temp Range 4 SYSTEM OVERVIEW 4.1 Introduction The Lyra s module combines an energy friendly MCU with a highly integrated radio transceiver in a SiP module with a robust, integrated antenna. This section gives a short introduction to the features of the module. The block diagram for the Lyra S module is shown in Figure 1. The wireless module includes the EFR32BG22 wireless System on a Chip (SoC), required decoupling capacitors and inductors, 38.4 MHz crystal, RF matching circuit, and integrated antenna. Figure 1: Lyra S block diagram https://www.lairdconnect.com/

3 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note Figure 2: Module schematic 4.2 EFR32BG22 SoC 4.3 Antenna The EFR32BG22 SoC features a 32-bit ARM Cortex M33 core, a 2.4 GHz high-performance radio, 512 kB of flash memory, a rich set of MCU peripherals, and various clock management and serial interfacing options. Lyra S modules include an integral antenna on board with the characteristics detailed in Table 2. Table 2: Antenna efficiency and peak gain (Lyra S) Parameter With Optimal Layout Note Efficiency Peak gain

-1 to -2 dB 2.3 dBi Antenna efficiency, gain and radiation pattern are highly dependent on the application PCB layout and mechanical design. 4.4 Power Supply The Lyra S requires a single nominal supply level of 3.0 V to operate. All necessary decoupling and filtering components are included in the module, and the supply is fully regulated internally. https://www.lairdconnect.com/

4 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note Laird Connectivity 50 South Main Street, Suite 1100 Akron, Ohio 44308 5.1 Qualified Antennas Table 3: Qualified antennas Antenna Type Connectorized Coaxial Dipole 5 CERTIFICATIONS This section details the regulatory certification status of the module in various regions.The address for the module manufacturer and certification applicant is:

Lyra S modules have been tested and certified both with the on-board antennas and with external antennas attached to the RF pin (RF_2G4). Performance characteristics for the integral antennas are presented in Table 2. Details for the external qualified reference antennas are summarized in Table 3. Maximum Gain 2.8 dBi Impedance 50 Manufacturer Model Type Connector Laird Connectivity Part Number Peak Gain 2400-2500 MHz 2400-2480 MHz Mag.Layers EDA-8709-2G4C1-B27-CY 0600-00057 Dipole IPEX MHF4 2 dBi

Any external antenna of the same general type and of equal or less directional gain as listed in the above table and having similar in- band and out-of-band characteristics, can be used in the regulatory areas that have a full modular radio approval, such as USA and Canada, as long as spot-check testing is performed to verify that no performance changes compromising compliance have been introduced. In the particular FCC case, in order to comply with e-CFR Title 47, Part 15, Subpart C, Section 15.203 the module integrator using an external antenna must ensure it has a unique connector or it is undetachable. In countries applying the ETSI standards, like the EU countries, the radiated emissions are always tested with the end-

product and the antenna type is not critical, but antennas with higher gain may violate some of the regulatory limits. When using instead an external antenna of a different type (such as a chip antenna, a PCB trace antenna or a patch) or having non- similar in-band and out-of-band characteristics, but still with a gain less than or equal to the maximum gain listed in the table above, it can be added as a permissive change to the existing grant/certificate. In most of these cases, some radiated emission testing is demanded, but no modular or end-product re-certification is required. On the other hand, all products with antennas having more gain than the maximum gain listed in the table above are very likely to re- quire a full new end-product certification. Since the exact permissive change procedure is chosen on a case-by-case basis, please consult your test house and/or a certification body for understanding the correct approach based on your unique design. You might also want or need to get in touch with Silicon Labs for any authorization letter that your certification body might ask for. https://www.lairdconnect.com/

5 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note 5.2 European Union (EU) CE The Lyra P modules are in conformity with the essential requirements and other relevant requirements of the Radio Equipment Directive (RED) (2014/53/EU). Please note that every application using the Lyra P module must perform the radio EMC tests on the end product, according to EN 301 489-17. It is ultimately the responsibility of the manufacturer to ensure the compliance of the end-product as a whole. The specific product assembly may have an impact to RF radiated characteristics, and manufacturers should carefully consider RF radiated testing with the end-product assembly. A formal Declaration of Conformity (DoC) is available at the product web page which is reachable starting from https://www.lairdconnect.com/. 5.3 USA - FCC This device complies with FCCs e-CFR Title 47, Part 15, Subpart C, Section 15.247 (and related relevant parts of the ANSI C63.10.2013 standard) when operating with the embedded antenna or with the antenna type(s) listed in Table 43. Operation is subject to the following two conditions:

This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesirable operation. Any changes or modifications not expressly approved by Silicon Labs could void the users authority to operate the equipment. FCC RF Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance. This transmitter meets the mobile requirements at a distance of 20 cm and above from the human body, in accordance to the limit(s) exposed in the RF Exposure Analysis. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter except in accordance with FCC multi-transmitter product procedures. OEM Responsibilities to Comply with FCC Regulations This module has been tested for compliance to FCC Part 15. OEM integrators are responsible for testing their end-product for any additional compliance requirements needed with this module in- stalled (for example, digital device emissions, PC peripheral requirements, etc.). Additionally, investigative measurements and spot checking are strongly recommended to verify that the full system compliance is maintained when the module is integrated, in accordance with the Host Product Testing Guidance in FCC's KDB 996369 D04 Module Integration Guide V01. General Considerations This transmitter module is tested as a subsystem and its certification does not cover the FCC Part 15 Subpart B

(unintentional radiator) rule requirement. However, such requirement is typically applicable to the final host. Thus, the final host will still need to be re- assessed for compliance to this portion of rule requirements, if applicable. Manual Information to the End User The OEM integrator has to be aware not to provide information to the end-user regarding how to install or remove this RF module in the users manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warnings as shown in this manual. OEM/Host Manufacturer Responsibilities OEM/host manufacturers are ultimately responsible for the compliance of the host system. This module must not be incorporated into any other radio device or system without retesting for compliance as multi-

radio and combined equipment. https://www.lairdconnect.com/

6 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note Separation The Lyra S is a shielded design and comes with full modular approval. To meet the SAR exemption for portable conditions, the minimum separation distance indicated in Table 4 must be maintained between the human body and the radiator (antenna) at all times. This transmitter module is tested in a standalone mobile RF exposure condition, and in case of any co-located radio transmitter being allowed to transmit simultaneously, or in case of portable use at closer distances from the human body than those allowing the exceptions rules to be applied, a separate additional SAR evaluation will be required, ultimately leading to a Class II Permissive Change, or more rarely to a new grant. Important Note:

In the event that these conditions cannot be met, then for the FCC authorization to remain valid the final product must undergo additional testing to evaluate the RF exposure, and a permissive change must be applied. The evaluation (SAR) is in the responsibility of the end-products manufacturer, as well as the permissive change that can be carried out with the help of the customer's own Telecommunication Certification Body typically acting as the grant holders agent. End Product Labeling Lyra S modules are not labeled with their own FCC ID due to their size. Instead, the packaging label contains the FCC ID. In all cases when the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. In that case, the final end product must be labeled in a visible area with the following:

For Lyra S:

Contains Transmitter Module FCC ID: SQG-LYRAS or Contains FCC ID: SQG-LYRAS Final note: As long as all the conditions in this and all the above sections are met, further RF testing of the transmitter with full modular approval is not required. However, OEMs are still supposed to follow the good practice and the FCC recommendation to ensure the compliance of the host by spot checking. Nevertheless, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements which might be mandatory with this module installed. Class B Device Notice Lyra S This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Increase the separation between the equipment and receiver. Reorient or relocate the receiving antenna. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio / TV technician for help. https://www.lairdconnect.com/

7 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note 5.4 ISED Canada ISED This radio transmitter (IC: 3147A-LYRAS; HVIN: LYRA-S) has been approved by Innovation, Science and Economic Development Canada (ISED Canada, formerly Industry Canada) to operate with the embedded antenna and with the antenna type(s) listed in Table 3, with the maximum permissible gain indicated. Antenna types not included in this list, having a gain greater than the maximum gain listed, are strictly prohibited for use with this device. This device complies with ISEDs license-exempt RSS standards. Operation is subject to the following two conditions:

This device may not cause interference; and This device must accept any interference, including interference that may cause undesired operation of the device RF Exposure Statement Exceptions from routine SAR evaluation limits are given in RSS-102 Issue 5. For the Portable use case, RF exposure or SAR evaluation is not required in all cases, at any distance from the human body, except when the Lyra S is used at full power with the external reference dipole antenna, in which case the separation distance from the human body must be of 13 mm or more for the exemption. For more details, refer to the values stated in Table 4. If the separation distances from the human body are less than the distances mentioned in the tables, then the OEM integrator is responsible for evaluating the SAR. The module meets the requirements for Mobile use cases when the minimum separation distance from the human body is 20 cm or greater, in accordance with the limit(s) exposed in the RF Exposure Analysis. OEM Responsibilities to Comply with ISED Regulations The module has been certified for integration into products only by OEM integrators under the following conditions:

The antenna must be installed such that a minimum separation distance as stated above is maintained between the radiator (antenna) and all persons at all times. The transmitter module must not be co-located or operating in conjunction with any other antenna or transmitter. Important Note:

In the event that these conditions cannot be met, the final product will have to undergo additional testing to evaluate the RF exposure in order for the ISED authorization to remain valid, and a permissive change will have to be applied with the help of the customer's own Telecommunication Certification Body typically acting as the certificate holders agent. In the case of the Lyra S, this variant is a shielded design, and consequently comes with a full modular approval. End Product Labeling For Lyra S:

The Lyra S modules are not labeled with their own IC ID due to their size. Instead, the packaging label contains the IC ID. In all cases when the IC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. In that case, the final end product must be labeled in a visible area with the following:

Contains Transmitter Module IC: 3147A-LYRAS or Contains IC: 3147A-LYRAS The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module or change RF related parameters in the user manual of the end product. https://www.lairdconnect.com/

8 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note Final Note: As long as all the conditions above are met, further transmitter testing is not required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). CAN ICES-003 (B) Lyra S This Class B digital apparatus complies with Canadian ICES-003. ISEDC (Francais) Le prsent metteur radio (IC: 3147A-LYRAS; HVIN: LYRA-S) a t appro- uv par Innovation, Sciences et Dveloppement conomique Canada (ISED Canada, anciennement Industrie Canada) pour fonction- ner avec l'antenne intgre et le ou les types d'antenne numrs la section Table 4, avec le gain maximal admis- sible indiqu. Les types d'antenne non inclus dans cette liste, ayant un gainsuprieur au gain maximal indiqu, sont strictement interdits d'utilisation avec cet appareil. Ce composant est conforme aux normes RSS, exonres de licence d'ISED. Son mode de fonctionnement est soumis aux deux condi- tions suivantes:

Ce composant ne doit pas gnrer dinterfrences. Ce composant doit pouvoir tre soumis tout type de perturbation y compris celle pouvant nuire son bon fonctionnement. Dclaration d'exposition RF L'exception tire des limites courantes d'valuation SAR est donne dans le document RSS-102 Issue 5. Pour le cas d'utilisation Portable, l'exposition RF ou l'valuation SAR n'est pas ncessaire dans tous les cas, n'importe quelle dis- tance du corps humain, sauf lorsque le Lyra S est utilis pleine puissance avec l'antenne diple de rfrence externe, auquel cas la distance de sparation du le corps humain doit tre de 13 mm ou plus pour l'exemption. Pour plus de dtails, reportez-vous aux valeurs indiques dans Table 5 and Table 6: si les distances de sparation du corps humain sont infrieures aux distances mentionnes dans les tableaux, alors l'int- grateur OEM est responsable de l'valuation du SAR. Le module rpond aux exigences des cas d'utilisation mobile lorsque la distance de sparation minimale du corps humain est de 20 cm ou plus, conformment aux limites exposes dans l'analyse d'exposition RF. Responsabilits des OEM pour une mise en conformit avec le Rglement du Circuit Intgr Le module a t approuv pour l'intgration dans des produits finaux exclusivement raliss par des OEM sous les conditions sui- vantes:

L'antenne doit tre installe de sorte qu'une distance de sparation minimale indique ci-dessus soit maintenue entre le radiateur (antenne) et toutes les personnes avoisinante, ce tout moment. Le module metteur ne doit pas tre localis ou fonctionner avec une autre antenne ou un autre transmetteur que celle indique plus haut. Tant que les deux conditions ci-dessus sont respectes, il nest pas ncessaire de tester ce transmetteur de faon plus pousse. Ce- pendant, il incombe lintgrateur OEM de sassurer de la bonne conformit du produit fini avec les autres normes auxquelles il pour- rait tre soumis de fait de lutilisation de ce module (par exemple, les missions des priphriques numriques, les exigences de p- riphriques PC, etc.). Remarque Importante: Dans le cas o ces conditions ne peuvent tre satisfaites (pour certaines configurations ou co-

implantation avec un autre metteur), l'autorisation ISED n'est plus considre comme valide et le numro didentification ID IC ne peut pas tre appos sur le produit final. Dans ces circonstances, l'intgrateur OEM sera responsable de la rvaluation du produit final (y compris le transmetteur) et de l'obtention d'une autorisation ISED distincte. Dans le cas du Lyra S, cette variante est une conception blinde et est par consquent livre avec une approbation modulaire complte. https://www.lairdconnect.com/

9 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note tiquetage des produits finis Les modules Lyra S ne sont pas tiquets avec leur propre ID IC en raison de leur taille. Au lieu de cela, l'tiquette d'emballage contient l'ID IC. Dans tous les cas, lorsque l'ID IC n'est pas visible lorsque le module est intgr au sein d'un autre produit, cet autre produit dans lequel le module est install devra porter une tiquette faisant apparaitre les rfrence du module intgr. Dans un tel cas, sur le produit final doit se trouver une tiquette aisment lisible sur laquelle figurent les informations suivantes:

Contient le module transmetteur: 3147A-LYRAS or Contient le circuit: 3147A-LYRAS Note finale: L'intgrateur OEM doit tre conscient quil ne doit pas fournir, dans le manuel dutilisation, d'informations relatives la faon d'installer ou de denlever ce module RF ainsi que sur la procdure suivre pour modifier les paramtres lis la radio. CAN ICES-003 (B) - Lyra S Cet appareil numrique de classe B est conforme la norme canadienne ICES-003 https://www.lairdconnect.com/

10 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note 5.5 Proximity to Human Body When using the Lyra S modules in an application where the radio is located close to the human body, the human RF exposure must be considered. FCC, ISED, and EU all have different standards and rules for evaluating the RF exposure. In particular, each regulator has different requirements when it comes to the exemption from having to perform RF exposure and SAR

(Specific Absorption Rate) measurements, and the minimum separation distances between the module and human body varies accordingly. The properties of the Lyra S modules allow for the minimum separation distances detailed in the tables below for SAR evaluation exemption in portable use cases (less than 20 cm from human body). The module is approved for the Mobile use case (more than 20 cm) without any need for RF Exposure evaluation. Table 4: Minimum separation distances for SAR evaluation exemption (Lyra S) Certification Lyra S 0 mm 13 mm with the reference external antenna 12 mm for integral antenna FCC ISED EU The RF exposure must always be evaluated using the end-product when transmitting with powerlevels higher than 20 mW (13 dBm). For FCC and ISED, using the module in end-products where the separation distance from the human body is smaller than that listed above is allowed but requires evaluation of the RF exposure in the final assembly and applying for a Class 2 Permissive Change or Change of ID to be applied to the existing FCC/ISED approvals of the module. For CE, RF exposure must be evaluated using the end- product in all cases when transmitting at more than the power level indicated in the table. Note: Placing the module in touch or very close to the human body will have a negative impact on the efficiency of the antenna thus a reduced range is to be expected. https://www.lairdconnect.com/

11 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note 5.6 Japan MC The Lyra S are certified in Japan with certification number 209-J00457 The Lyra S modules are not labeled with their own ID due to their size. Instead, the packaging label contains the ID. In all cases when the ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. In that case, the final end product must be labeled in a visible area. It is the end-product manufacturer's responsibility to ensure that the module is configured to meet the limits documented in the formal certification test report available at https://www.lairdconnect.com/. If needed, refer to the API reference manual(s) to learn how to configure the maximum RF TX power for the normal operations. Since September 1, 2014 it is allowed (and highly recommended) that a manufacturer who integrates a radio module in their host equipment places the certification mark and certification number on the outside of the host equipment. This combination of mark and number, and their relative placement, is depicted in Figure 5, and depending on the size of the module it might also appear on the topshield markings of the radio module. The certification mark and certification number must be placed close to the text in the Japanese language which is provided below. This change in the Radio Law has been made in order to enable users of the combination of host and radio module to verify if they are actually using a radio device which is approved for use in Japan. It is recommended that the host device bears a label showing the Japanese GITEKI mark and the certification number accompanied by the following statement:

Translation: This equipment contains specified radio equipment that has been certified to the Technical Regulation Conformity Certification under the Radio Law. 209-J00457 Figure 3: GITEKI mark and number https://www.lairdconnect.com/

12 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 App Note Title Application Note 5.7 South Korea KC The Lyra S modules have a RF certification for import and use in South-Korea. Certification number is: R-C-L7C-LYRAS When integrating the RF-certified module, an end-product is exempted from doing the RF emission testing, as long as the recommended design guidance is followed, and the approved antennas are used. EMC testing, and any other relevant test, might still be required for full compliance. 5.8 Bluetooth Qualification The Lyra S modules come at launch with a pre-qualified Bluetooth Low Energy RF-PHY Tested Component having Declaration ID of XXXXX and QDID of XXXX and having a listing date of CXXXXXX Because the validity set by the SIG for Tested Components is currently of 3 years, during the product lifetime Laird Connectivity will renew this Component as it expires, whenever applicable. Renewed Tested Components will come with new DIDs and QDIDs, and these will be then referred to in end-product listings. Such new DIDs and QDIDs can be discovered starting from the original ones. This modules RF-PHY Tested Component should be combined with the latest Wireless Gecko Link Layer and Host pre-

qualified components by Silicon Labs, when in the process of qualifying an end-product embedding the Lyra S via the SIGs Launch Studio. 6 REVISION HISTORY Version 1.0 Date TBD Notes Initial Release Contributor(s) Approver Jonathan Kaye https://www.lairdconnect.com/

13 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823

A 7 DESIGN GUIDELINES 7.1 Layout and Placement For optimal performance of the LYRA S the following guidelines are recommended:

Place the module 1.50 mm from the edge of the copper keep-in area at the middle of the long edge of the application PCB, as illustrated in Figure 10. Copy the exact antenna design from Figure 10 with the values for coordinates A to L given in Figure 11. Make a cutout in all lower layers aligned with the right edge and the bottom edge of the antenna as indicated by the The 0-ohm gives the ability to test conducted and to evaluate the antenna impedance in the design. yellow box in Figure 12. Connect all ground pads directly to a solid ground plane in the top layer. Connect RF_2G4 to ANT_IN through a 0-ohm resistor. Place ground vias as close to the ground pads of the LYRA S as possible. Place ground vias along the antenna loop right and bottom side. Place ground vias along the edges of the application board. Do not place plastic or any other dielectric material in contact with the antenna. A minimum clearance of 0.5 mm is advised. Solder mask, conformal coating and other thin dielectric layers are acceptable directly on top of the antenna region. Figure 1: Recommended Layout for LYRA S Lyra S Datasheet A B C D E F G H I J K L Wloop Hloop Note:

Figure 2: Antenna Layout With Coordinates Table 1: Antenna Polygon Coordinates, Referenced to Center of LYRA S Point LYRA SC22HNA2

(2.87, 2.13)

(2.54, 2.13)

(2.54, 3.69)

(3.36, 4.51)

(7.75, 4.51)

(7.75, 4.15)

(6.84, 4.15)

(6.21, 3.52)

(4.26, 3.52)

(3.97, 3.81)

(3.10, 3.81)

(2.87, 3.58) 4.88 4.15 1. All coordinates and dimensions listed in mm. https://www.lairdconnect.com/

2 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 Lyra S Datasheet Figure 3: Antenna Clearance in Inner and Bottom Layers https://www.lairdconnect.com/

3 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 Lyra S Datasheet 7.2 Best Design Practices The design of a good RF system relies on thoughtful placement and routing of the RF signals. The following guidelines are recommended:

Place the LYRA S and antenna close to the center of the longest edge of the application board. Do not place any circuitry between the board edge and the antenna. Make sure to tie all GND planes in the application board together with as many vias as can be fitted. Generally ground planes are recommended in all areas of the application board except in the antenna keep-out area shown in Figure 12. Open-ended stubs of copper in the outer layer ground planes must be removed if they are more than 5 mm long to avoid radiation of spurious emissions. The width of the GND plane to the sides of the LYRA S will impact the efficiency of the on-board chip antenna. To achieve optimal performance, a GND plane width of 55 mm for LYRA S22A is recommended as seen on Figure 13. See Antenna Typical Characteristics for reference. Figure 14 illustrates non-optimal layout examples scenarios that will lead to severely degraded RF performance for the application board. Figure 4: Illustration of Recommended Board Width https://www.lairdconnect.com/

4 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 Lyra S Datasheet Figure 5: Non-Optimal Layout Examples https://www.lairdconnect.com/

5 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823 Lyra S Datasheet 7.3 Radio Performance vs. Carrier Board Size For many applications, the carrier board size is determined by the overall form factor or size of the additional circuitry. The recommended carrier board width 55 mm for the LYRA S is thus not always possible in the end-application. If another form factor is required, the antenna performance of the integrated antenna will be compromised but it may still be sufficiently good for providing the required link quality and range of the end-application. Figure 16 shows the total efficiency of the integrated antenna for different carrier board sizes. As can be seen the best performance is achieved for the carrier board size of 55 mm x 25 mm for the LYRA S, with relatively constant performance for larger boards and rapidly declining performance for smaller boards. The performance of all the sizes tested will be adequate for more than 15 m line-of-sight range and all of the sizes are thus usable. WARNING: Any antenna tuning or change of the loop dimensions will void the modular certification of modules with modular certification. In that case, a Permissive Change to the modular approval is required. Figure 6: Efficiency of the Integrated Antenna as Function of the Carrier Board Size for LYRA S22A 7.4 Proximity to Other Materials Placing plastic or any other dielectric material directly in contact with the antenna may cause performance degradation. A clearance of minimum 0.5 mm is recommended to avoid excessive detuning of the antenna. Solder mask, conformal coating, and other thin dielectric layers are acceptable directly on top of the antenna region. Any metallic objects in close proximity to the antenna will prevent the antenna from radiating freely. The minimum recommended distance of metallic and/or conductive objects is 10 mm in any direction from the antenna except in the directions of the application PCB ground planes. 7.5 Proximity to Human Body Placing the module in contact with or very close to the human body will negatively impact antenna efficiency and reduce range. Furthermore, additional certification may be required if the module is used in a wearable device. https://www.lairdconnect.com/

6 Copyright 2021 Laird Connectivity All Rights Reserved Americas: +1-800-492-2320 Europe: +44-1628-858-940 Hong Kong: +852-2762-4823

F E D C B A 8 7 6 5 4 3 2 1 Details:

1) Part Number of Product 2) Model Number of Product 3) Serial Number Base Material (Blank Label Material Specification) Material: Polyimide

(stable @ 260 degrees C) Color: Glossy White Text: Black 1 2 3 0 0

. 6 6.00 8 7 6 THIRD ANGLE PROJECTION UNLESS OTHERWISE NOTED, THIS DOCUMENT CONTAINS LAIRD CONNECTIVITY INFORMATION. REPRODUCTION, USE, DISCLOSURE OR TRANSMITTAL OF ALL OR ANY PART OF THIS DOCUMENT IS PROHIBITED EXCEPT TO THE EXTENT APPROVED IN WRITING BY AN AUTHORIZED REPRESENTATIVE OF LAIRD CONNECTIVITY. LAIRD CONNECTIVITY RESERVES ALL RIGHTS UNDER PATENTS, TRADEMARKS, COPY RIGHTS AND TRADE SECRETS. COPYRIGHT, LAIRD CONNECTIVITY 2020, ALL RIGHTS RESERVED. 5 4 DATE Aug 18, 2021 SIZE DWG. NO. INTERPRET GEOMETRIC TOLERANCING PER: ASME 14.5M SHEET 1 OF 1 SCALE: 10:1 3 B 2 REV 1.0 1 UNLESS OTHERWISE SPECIFIED:

CAD FILE: LYRA-S TITLE:

LYRA-S Label Drawing DIMENSIONS ARE IN MILLIMETERS TOLERANCES:

ANGULAR:

X.X X.XX

.5

.2

.05 F E D C B A

Dimensions: 6 mm 6 mm 1.1 mm The Certification Number with ISEDs permission will be displayed in the Uses Guide along with the following text. End Product Labeling The Lyra S modules are not labeled with their own IC ID due to their size. Instead, the packaging label contains the IC ID. In all cases when the IC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. In that case, the final end product must be labeled in a visible area with the following:

For Lyra S:

Contains Transmitter Module IC: 3147A-LYRAS or Contains IC: 3147A-LYRAS

F E D C B A 8 7 6 5 4 2 1 3 REV. 1.0 REVISIONS DESCRIPTION DATE APPROVED Initial release Feb 7, 2022 AC 4.00 101.60 0 5 2

. 0 5 3 6

. Notes:

1.Material:Art paper, White 2.Unit:mm 3.Font: Arial Label info:

1.M/N: LYRA-S 2.Description: LYRA-S Bluetooth 5.3 Module 3.P/N: 453-00091R 4.D/C: SSYYWWD SS: manufacturer number YY: last two numbers of the year WW: Week number of the year D: Sun=1,Mon=2,Tue=3,Wed=4,Thu=5, Fri=6,Sat=7 5.Quantity: 1000pcs (According to the actual quantity) 6.FCC ID: SQG-LYRAS 7.IC: 3147A-LYRAS 8.CE logo 9.KC ID: R-C-L7C-LYRAS 10.Japan ID: 209-J00457 11.Japan Giteki logo F E D C B A 8 7 6 THIRD ANGLE PROJECTION UNLESS OTHERWISE NOTED, THIS DOCUMENT CONTAINS LAIRD CONNECTIVITY INFORMATION. REPRODUCTION, USE, DISCLOSURE OR TRANSMITTAL OF ALL OR ANY PART OF THIS DOCUMENT IS PROHIBITED EXCEPT TO THE EXTENT APPROVED IN WRITING BY AN AUTHORIZED REPRESENTATIVE OF LAIRD CONNECTIVITY. LAIRD CONNECTIVITY RESERVES ALL RIGHTS UNDER PATENTS, TRADEMARKS, COPY RIGHTS AND TRADE SECRETS. COPYRIGHT, LAIRD CONNECTIVITY 2020, ALL RIGHTS RESERVED. 5 4 DATE Feb 7, 2022 SIZE DWG. NO. INTERPRET GEOMETRIC TOLERANCING PER: ASME 14.5M SHEET 1 OF 1 SCALE: 2:1 3 B 2 LYRA-S 1 REV 1.0 UNIT: mm UNLESS OTHERWISE SPECIFIED:

DIMENSIONS ARE IN MILLIMETERS TOLERANCES:

ANGULAR:

X.X X.XX

.5

.2

.1 CAD FILE:

LYRA-S_packaging label TITLE:

LYRA-S packaging label

Date: November 23, 2021 American Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 To Whom It May Concern:

Ryan Urness and Amanda Hauck of Laird Connectivity is authorized to act on our behalf, until otherwise notified, for applications to American Certification Body, Inc. (ACB). We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. We also declare that the information provided to the FCC is true and correct to the best of our knowledge (47 CFR 2.911(d)) and we have been informed of the grantee responsibilities (47 CFR 2.909) with regard to certified equipment. Thank you, Agency Agreement Expiration Date: November 23, 2022 Brian Petted

(Print name)

(Signature) Technology Leader By:

Title:

On behalf of: Laird Connectivity LLC Telephone:

262-421-4974

Date: January 10, 2022 Subject: Request to Change in Identification Dear Regulatory Authority, This Change of Identification request applies for a new FCC ID, as established in CFR 47 2.933(b) for a currently approved device. This application by Laird Connectivity will establish a new FCC ID: SQG-LYRAS under Laird Connectivity grantee code for purpose of marketing. The original grant to the Original Applicant will remain in effect. Per 2.933(b) 1. The original identification is QOQ-BGM220S2 2. The original grant date is 9/9/2020 3. Only the model name, trade name, and FCC ID number are different. 4. The original test results are applicable and representative of this changed device. Only BGM220S22A variant is applicable 5. Exterior photographs are included in this application. The following files are electronically submitted as attachments:

Cover Letter FCC ID label format and location Sincerely, Brian Petted, Technology Leader brian.petted@lairdconnect.com

Letter of Attestation Date: December 8, 2021 Federal Communications Commission (FCC) Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046-1609 To whom it may concern:

We, Laird Connectivity, LLC, state in relation to our Bluetooth LE wireless radio module, having model name Lyra S, and FCC ID number SQG-LYRAS, officially declare that the SRD Mode (2403-2481MHz) is not functional, and has been disabled in the module firmware at the manufacturer. Thank you for your attention and consideration, and any further questions or concerns can be directed to the undersigned authority below. Sincerely, Brian Petted Technology Leader Brian.petted@lairdconnect.com Laird Connectivity, LLC W66N220 Commerce Ct. Cedarburg, WI 53012

any S|

Place and/date of issue (of this letter):

( ) Zs J Authorized Signatory: Enrico Taddeo Job Title: Senior Applications and Certifications Engineer eMail: enrico.taddeo@silabs.com LICON LABS Letter of Authorization Attn: To Whom it May Concern / Application Examiner / Review Engineer / Officer in Charge Re: Authorization to Apply for a Change in Identification per Section 2.933(b) of 47CFR Dear Madam or Sir, We, Silicon Laboratories Finland Oy, a corporation branch validly organized and existing under the laws of Finland, having its principal place of business at Alberga Business Park, Bertel Jungin aukio 3, 02600 Espoo, Finland, in relation to our Bluetooth LE wireless radio modules having model name of BGM220S22A and brand name of Silicon Labs, as the manufacturers hereby declare to have applied for, and to have obtained a Federal Communications Commission (FCC) grant with FCC ID: QO0Q-BGM220S2 and with original issue date of September 9, 2020, and with this letter we grant permission on a one-time basis to the following company:

Laird Connectivity Inc. [hereafter referred to as the New Grantee]

Full Address: 50 Main Street, Akron, OH 44308, USA FCC Grantee Code: SQG to apply for a Change in Identification with FCC, as per FCC guidance under KDB 249634. We understand that the New Grantee is requesting the authorization to make this change in order to re-

brand and re-sell our modules, under their own naming and branding, as follows:

New brand and model name of module: Laird Connectivity Inc. / Lyra-S FCC ID: SQG-LYRAS [newly established, for re-branded/re-named module above]

thus, we authorize FCC to use information on file to grant the requested Change in Identification.

- We confirm we will be supplying our BGM220S22A modules to the New Grantee unmodified and equivalent (in the design, circuitry, or construction) to the originally certified equipment. The original test results and technical documentation continue to be representative of, and applicable to the supplied equipment which will be bearing the changed identification. The original grant will remain in effect, nevertheless.

- Conversely, we emphasize to have no control or responsibility on the proper installation, configuration and use of our modules in the products manufactured and sold by the New Grantee and/or their clients under their names. As a result, the New Grantee take ownership and accountability for the compliance of their products, including any appropriate labelling to take into account the new identification, and commit to submit in any following permissive change application of theirs all the intended documentation, including but not limited to test reports, exterior photographs and product user manuals. This authorization expires six (6) months after the date of issue. Should there be any query regarding this authorization, please do not hesitate to contact the undersigned. Thank you for your attention to this matter. Silicon Laboratories Finland Oy Alberga Business Park, Bertel Jungin aukio 3 FI-02600 Espoo, Finland

+358 9 435 5060 / www.silabs.com Ref: SF00272162-1b