SIM8905A-R2_User Manual_ V1.00 Smart Machine Smart Decision Compliance Information:
FCC Compliance Statement: This device complies with Part 15 of the FCC Rules . Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. This device must accept any interference received, including interference that may cause undesired operation. Product that is a radio transmitter is labeled with FCC ID. FCC Caution:
(1)Exposure to Radio Frequency Radiation. This equipment must be installed and operated in accordance with provided instructions and the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be collocated or operating in conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance.
(2)Any changes or modifications not expressly approved by the grantee of this device could void the user's authority to operate the equipment.
(3)This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
(4)Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user authority to operate the equipment.
(5) the modules FCC ID is not visible when installed in the host, if the host is marketed so that end users do not have straight forward commonly used methods for access to remove the module so that the FCC ID of the module is visible; then an additional permanent label referring to the enclosed module: Contains Transmitter Module FCC ID: 2AJYU-8PSA303 or Contains FCC ID: 2AJYU-8PSA303. 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:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- 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. List the FCC rules that are applicable to the modular transmitter. These are the rules that specifically establish the bands of operation, the power, spurious emissions, and operating fundamental frequencies. DO NOT list compliance to unintentional-radiator rules (Part 15 Subpart B) since that is not a condition of a module grant that is extended to a host manufacturer. See also Section 2.10 below concerning the need to notify host manufacturers that further testing is required The following statement must be included with all versions of this document supplied to an OEM or integrator, but should not be distributed to the end user. This device is intended for OEM integrator only. Please See the full Grant of Equipment document for other restrictions. 2 Smart Machine Smart Decision 1. SIM8905A-R2 Description 1.1. Summarize SIM8905A-R2 is a smart module, which is based on Qualcomm MSM8909 platform. It includes base-band, memory, RF front end and required circuitry to support LTE-FDD&TDD. 1.2. Feature Feature Implementation Application Processor Memory Quad ARM Cortex-A7 cores up to 1.1 GHz 32 kB L1, 512 kB L2 cache ARMv7 32-bit architecture 8Gb LPDDR3 up to 533Mhz;
8GB eMMC NAND flash External memory via SD SD3.0; Support SD flash devices up to 32GB Operating System Android OS 5.x/7.x/8.x Power supply 3.4V ~4.4V 3 Charge management Integrated 1.44 A linear charger for single-cell lithium-ion batteries Smart Machine Smart Decision Display Camera Video performance 4-lane MIPI_DSI, 1.5Gbps each HD(720P), 60fps Primary camera: 2-lane MIPI_CSI, 8MP Secondary camera: 1-lane MIPI_CSI, 5MP Encode:
H.264 BP/MP 720p, 30fps MPEG-4 SP / H.263 P0 WVGA, 30fps VP8 WVGA, 30fps Decode:
H.264 BP/MP/HP1080p, 30 fps MPEG-4 SP/ASP1080p, 30 fps DivX 4x/5x/6x1080p, 30 fps H.263 P0WVGA, 30 fps VP8 1080p, 30 fps
(HEVC) H.265 MP 8 bit 1080p, 30 fps Audio Two inputs that support single-ended configurations Three outputs: earpiece, stereo headphones, and mono class-D speaker driver Voice codec support:
G711; Raw PCM; QCELP; EVRC, -B, -WB; AMR-NB, -WB; GSM-EFR, -FR,
-HR;
Audio codec support:
MP3; AAC+, eAAC; AMR-NB, -WB, G.711, WMA 9/10 Pro USIM card Dual cards dual standby Frequency bands Transmitting power EGSM900/DCS1800 WCDMABand1/8 CDMA2000 1X/EVDO BC0 TD-SCDMA: B34/B39 LTE-FDD B1/B3/B8 LTE-TDD: B38/B39/B40/B41 1 GSM/GPRS:
Class 4 : GSM850/EGSM900 Class 1 : DCS1800/PCS1900 EDGE:
Class E2: GSM850/EGSM900 Class E1: DCS1800/PCS1900 TD-SCDMA Class 2: B34/B39 CDMA Class 3: BC0 UMTS:
Class 3: B1/B2/B5/B8 LTE:
Class 3: B1/B3/B5/B7/B8/B20/B38/B39/B40/B41 1 4 Transmission rate Smart Machine Smart Decision GPRS Class B, multi-slot class 33 operation, coding scheme: CS1-4, DL maximum speed: 107kbps; UL maximum speed: 85.6kbps EDGE multi-slot class 33 operation, coding scheme: MSC1-9, DL maximum speed: 296kbps; UL maximum speed: 236.8kbps TD-SCDMA 2.8Mbps(DL) 2.2Mbps(UL) CDMA DORA 3.1Mbps(DL) 1.8Mbps(UL) UMTS R99 speed: 384 kbps DL/UL DC-HSDPA Category 24 - 42.2 Mbps, HSUPA Category 6 - 11.5 Mbps LTE Category 4 - 150 Mbps (DL) LTE Category 4 - 50 Mbps (UL) Bluetooth Specification: V2.1+EDR , 3.0+HS, V4.0 BLE Tx power levels: Class 1 & 2 Wi-Fi/WAPI Support SoftAP Function, 802.11 b/g/n Encryption: WFA WPA/WPA2 Qos: WFA WMM , WMM PS RF performance11b power 17 dBm, EVM35%
11g power 15dBm, EVM<-25dB 11n power 12 dBm, EVM<-27dB Wi-Fi bands:
SIM8905: 2.4GHz SIM8905A/SIM8905E: 2.4GHz/5GHz Receiver type: GPS,GLONASS,BEIDOU Sensitivity
: Tracking & Navigation : -160dBm
: -156dBm
: -148dBm Reacquisition Cold Start GNSS TTFF@-130dBm:
hot start <5s warm start <15s cold start <35s 39dB/Hz@-130dBm CNo :
Operating temperature: -30 ~ +75 Storage temperature: -40 ~ +90 Dimension: 40.5*40.5*2.8mm Weight: 10.6g Temperature range Physical dimension 5 1.3. Pin Smart Machine Smart Decision 1.4. Picture Figure 1: Top and Bottom view of SIM8905A-R2 6 1.5. Dimension Smart Machine Smart Decision Figure 2: Dimension 7 Smart Machine Smart Decision 2. Interface Application Power Supply The power supply pins of SIM8905A-R2 include VBAT_RF and VBAT_BB. VBAT_RF directly supplies the power to RF PA; VBAT_BB supplies the power to the base-band system. The power supply of SIM8905A-R2 ranges from 3.4V to 4.4V, and 3.9V is recommended. It must be able to provide sufficient current up to 3A for the high-power transmitting. If the DC input voltage is +5V and customers do not care about the power efficiency, a high-current low-dropout regulator is recommended. Figure 4 is the reference design. Figure 4: LDO power supply reference circuit Note: To ensure a proper behavior of the regulator under light load, an extra minimum load (R103 in Figure 4) is required, because the current SIM8905A-R2 consumed is very small in sleep mode and power off mode. For more details about minimum load, please refer to specification of MIC29302. To increase power efficiency, the switching mode DC-DC converter is preferable, especially when DC input voltage is quite high. The following figure is the reference design, and it is recommended to reserve a proper ferrite bead (FB101 in Figure 5) in series for EMI suppression. Figure 5: DC-DC power supply reference circuit For battery-powered application, the 3.7V lithium battery can be connected to SIM8905A-R2 VBAT pins directly, but other types of battery must be used carefully, since their maximum voltage may rise over the absolute maximum voltage of the module. When battery is used, the total impedance between battery and VBAT pins should be less than 150m. 8 In any case mentioned above, at the VBAT input pins side, please take Figure 6 as a reference:
Smart Machine Smart Decision Figure 6: VBAT input reference circuit Where C101 is a 100uF tantalum capacitor with low ESR; C105 is a 220uF tantalum capacitor with low ESR;
33pF and 10pF capacitors are used for eliminating the high frequency interference; 5.1V/500mW zener diode can protect the module against voltage surge. All of these components should be placed as close to VBAT pins as possible. Table 5: Recommended zener diode Vendor On semi Prisemi Vishay Part number MMSZ5231BT1G PZ3D4V2H MMSZ4689-V Crownpo CDZ55C5V1SM 1 2 3 4 Power on/off Power on Power(watts) Packages 500mW 500mW 500mW 500mW SOD123 SOD323 SOD123 0805 Users can power on SIM8905A-R2 by pulling down the PWRKEY pin for more than 2 second then release. This pin is already pulled up to 1.8V internally, so external pull up is not necessary. Reference circuits are shown as below:
9 Smart Machine Smart Decision Figure 7: Powered on/down module using transistor Figure 8: Powered on/down module using button The power on sequence is illustrated in Figure9 Figure9: Timing of power on module Power off Users can power off SIM8905A-R2 by pulling down the PWRKEY pin for more than 8 seconds. VRTC VRTC is the power supply for RTC circuit and charger output for coin cell or backup battery. If RTC support is 10 needed when the battery is removed, a qualified coin cell or keep-alive capacitor is required on the VRTC pin. When VBAT is present and valid, coin cell charging is enabled through software control and powered from VBAT. Smart Machine Smart Decision Reference circuits are shown as below:
Keep-alive capacitor:
Non-rechargeable battery:
Figure 10: Keep-alive capacitor Figure 11: Non-rechargeable battery Rechargeable battery:
Figure 12: Rechargeable battery VRTC typical voltage is 3.0V, and the current consumption is about 5uA when VBAT is absence. For electrical characteristics, please refer to Table 23: VRTC characteristic. Output Power Management Table 6: Output power management summary Pin Name Pin#
Specified range (V) Rated current (mA) Expected use LDO5_1V8 LDO6_1V8 SD_LDO11 SD_LDO12 111 125 38 32 1.8 1.8 2.95 1.8/2.95 50 200 600 50 Force USB boot Display, camera, sensors SD/MMC card For SD signals pull-up 11 USIM1_VDD USIM2_VDD LDO17_2V85 26 21 129 1.8/2.95 1.8/2.95 2.85 USB Interface Smart Machine Smart Decision 50 50 420 USIM 1 USIM 2 Display, camera, sensors SIM8905A-R2 provides one High-speed USB 2.0 interface, used for software upgrading, debugging, charging, etc. In addition, SIM8905A-R2 supports OTG function, but external 5V power supply is required. Figure 13: USB reference circuit Figure14: USB_OTG reference circuit Linear Battery Charger SIM8905A-R2 module integrates a 1.44A linear battery charger for single-cell lithium-ion batteries. 12 Charging Control Smart Machine Smart Decision Battery charging is controlled by a PMIC state-machine. The first step in the automated charging process determines if trickle charging is needed. Charging of a severely depleted battery must begin with trickle charging to limit the current, avoid pulling VDD down, and protect the battery from more charging current than it can handle. Once a minimum battery voltage is established using trickle charging, constant-current charging is enabled to charge the battery quickly this mode is sometimes called fast charging. Once the battery approaches its target voltage, the charge is completed using constant-voltage charging. Figure15: Charging control diagram Table 7: Linear battery charger performance specifications Parameter Comments ITRKL-A ITRKL-B VTRKL VWEAK VBAT_MAX IBAT_MAX Trickle-A Charging current Trickle-B Charging current Trickle-B threshold voltage range Programmable, 15.62 mV steps Weak battery threshold range Programmable, 18.75 mV steps Maximum battery voltage Programmable, 25 mV steps Fast charging current range Programmable, 90mA steps VBAT_SNS Min 81 405 2.5 3.0 4 90 Typ 90 450 Max 99 495 Units mA mA 2.796 2.984 3.206 3.581 4.2 4.775 V V V 1440 mA VBAT_SNS is used for battery voltage sensing, the typical input range is 2.5V~4.5V. UART/SPI/I2C SIM8905A-R2 provides several sets of GPIOs which are available as BLSP (BAM-enabled low-speed peripheral) interfaces that can be configured to support various interface combinations, as shown in the following table. The 13 operation voltage is 1.8V Table 8: UART/SPI/I2C functional assignments Smart Machine Smart Decision Pin Name Pin#
Expected or Default Function Alternative Function 1 Alternative Function 2 UART2_TXD UART2_RXD SENSOR_I2C_SDA SENSOR_I2C_SCL GPIO_8 GPIO_9 GPIO_10 GPIO_11 GPIO_16 GPIO_17 TP_I2C_SDA TP_I2C_SCL UART1_TXD UART1_RXD UART1_CTS UART1_RTS CAM_I2C_SDA CAM_I2C_SCL 94 93 92 91 119 118 117 116 123 124 48 47 34 35 36 37 84 83 BLSP1_UART_TX BLSP1_SPI_MOSI BLSP1_UART_RX BLSP1_SPI_MISO BLSP1_I2C_SDA BLSP1_I2C_SCL BLSP1_SPI_CS_N BLSP1_UART_CTS BLSP1_SPI_CLK BLSP1_UART_RTS GPIO GPIO GPIO GPIO GPIO GPIO BLSP6_SPI_MOSI BLSP6_SPI_MISO BLSP6_SPI_CS_N BLSP6_I2C_SDA BLSP6_SPI_CLK BLSP6_I2C_SCL BLSP5_SPI_MOSI BLSP5_SPI_MISO BLSP5_I2C_SDA BLSP5_SPI_CS_N BLSP5_I2C_SCL BLSP5_SPI_CLK BLSP2_UART_TX BLSP2_SPI_MOSI BLSP2_UART_RX BLSP2_SPI_MISO BLSP2_UART_CTS BLSP2_SPI_CS_N BLSP2_UART_RTS BLSP2_SPI_CLK BLSP3_I2C_SDA BLSP3_I2C_SCL BLSP2_I2C_SDA BLSP2_I2C_SCL Note:
1. UART: can be used as a diagnostic port, up to 4 Mbps;
2. 3. I2C: supports master-only mode; up to 3.4 MHz, 2.2Kohm pull-up resistors are needed externally;
SPI: supports master-only mode; up to 52 MHz. Secure Digital Interface SIM8905A-R2 provides one 4-bit secure digital interface, which supports the following standards:
SD Specifications Part 1 Physical Layer Specification Version 3.00 Part A2 SD Host Controller Standard Specification Version 3.00 Part E1 SDIO Specification Version 3.00 14 Smart Machine Smart Decision Figure17: SD card reference circuit Display Interface SIM8905A-R2 provides a 4-lane MIPI_DSI, with 1.5 Gbps per lane high-speed mode bandwidth, to support 720p HD display. PWM is used as PWM control for external WLED driver. Table 9: Display interface pin definitions Pin Name PWM LCD_RST_N LCD_TE MIPI_DSI_CLK_M MIPI_DSI_CLK_P MIPI_DSI_LANE0M MIPI_DSI_LANE0P MIPI_DSI_LANE1M MIPI_DSI_LANE1P MIPI_DSI_LANE2M MIPI_DSI_LANE2P MIPI_DSI_LANE3M MIPI_DSI_LANE3P Pin#
29 49 50 52 53 54 55 56 57 58 59 60 61 Type O O Description PWM control for external WLED driver LCD reset LCD tear effect MIPI display serial interface I O O O O O O O O O O If only 2-lane MIPI_DSI is needed, just leave LANE2 and LANE3 floating. 15 Smart Machine Smart Decision Figure 18: Display reference circuit Touch Screen Interface Table 10: Touch screen interface pin definitions Pin Name Pin#
TP_I2C_SDA TP_I2C_SCL TP_INT_N TP_RST_N 48 47 30 31 Type I/O O I O Description Touch screen I2C data Touch screen I2C clock Touch screen interrupt Touch screen reset Note:
1. TP_I2C: supports master-only mode; 2.2Kohm pull-up resistors are needed externally;
Camera Interface SIM8905A-R2 supports two cameras: 2-lane MIPI_CSI primary camera up to 8MP resolution and 1-lane MIPI_CSI secondary camera up to 5MP resolution. Table 11: Camera interface pin definitions Pin Name Pin#
Type Description 16 MIPI_CSI0_CLK_M MIPI_CSI0_CLK_P MIPI_CSI0_LN0_M MIPI_CSI0_LN0_P MIPI_CSI0_LN1_M MIPI_CSI0_LN1_P MIPI_CSI1_CLK_M MIPI_CSI1_CLK_P MIPI_CSI1_LN0_M MIPI_CSI1_LN0_P CAM0_MCLK CAM1_MCLK CAM0_RST_N CAM0_PWDN CAM1_RST_N CAM1_PWDN CAM_I2C_SCL CAM_I2C_SDA 63 64 65 66 67 68 70 71 72 73 74 75 79 80 81 82 83 84 Smart Machine Smart Decision Primary camera serial interface Secondary camera serial interface Primary Camera master clock Secondary Camera master clock Primary Camera reset Primary Camera power down Secondary Camera reset Secondary Camera power down Camera I2C clock I I I I I I I I I I O O O O O O O I/O Camera I2C data Figure 19: Primary camera reference circuit 17 Smart Machine Smart Decision Audio SIM8905A-R2 provides two microphone inputs and three outputs including earpiece, stereo headphones, and mono class-D speaker driver. Table 12: Audio interface pin definitions Pin Name Pin#
Type Description 8 9 136 137 138 139 5 6 4 11 10 194 210 O O O I O I P I I O O O O Earpiece output, positive Earpiece output, negative Headphone output, right channel Headphone ground reference Headphone output, left channel Headset detection Microphone input 2 ground reference Microphone input 2, positive Microphone input 1, positive Speaker driver output, negative Speaker driver output, positive Microphone bias 1 Microphone bias 2 EAR_P EAR_M HPH_R HPH_GND HPH_L HS_DET GND_MIC MIC2P MIC1P SPK_M SPK_P MIC_BIAS1 MIC_BIAS2 Microphone Figure 20: Microphone reference circuit Note:
1. Internal MIC_BIAS pull-up is used to reduce BOM cost and PCB routing. 18 2. Single-ended capless input is the only supported configuration, but differential routing is recommended. Smart Machine Smart Decision Table 13: Analog microphone input performance Parameter Test conditions Min Typ Max Units Microphone amplifier gain = 0 dB (minimum gain) Input referred noise Single-ended, A-weighted, capless Signal-to-noise ratio THD+N ratio Analog input = -1 dBV Single-ended, A-weighted, capless f = 1.02 kHz; single-ended input; 200 Hz to 20 kHz bandwidth; capless Microphone amplifier gain = 6 dB Input referred noise Single-ended, A-weighted, capless
Signal-to-noise ratio Single-ended, A-weighted, capless 91.0 THD+N ratio f = 1.02 kHz; single-ended input;
Analog input = -1 dBV 200 Hz to 20 kHz bandwidth; capless Microphone amplifier gain = 24 dB (maximum gain) Input referred noise Single-ended, A-weighted, capless Signal-to-noise ratio Single-ended, A-weighted, capless THD+N ratio f = 1.02 kHz; single-ended input;
Analog input = -1 dBV 200 Hz to 20 kHz bandwidth; capless
84.2
92.0 19.3 94.0 25.1 Vrms
-86.0
-70.0
dB dB dB dB dB dB 5.9 92.5 3.4 85.4 7.1 Vrms
-85.0
-70 4.2 Vrms
-82.4
-76.0 Single-ended 1 kHz input. Input signal
-0.5 0 0.5 dBV level required to get 0 dBFS digital output 1.0 3.0
15 M M pF General requirements Full-scale input voltage Input impedance Capless input Input disabled Input capacitance Capless input Headset Stereo class-AB headphone supports 16 , 32 , and up to 50 K loads. Its typical output power at 1.02 KHz and THD + N 1% is:
21.5 mW with 16 loads, 0 dBFS and -4.5 dB gain 30.8 mW with 32 loads, 0 dBFS and 0 dB gain A 100K pull-down resistor is integrated at HPH_L pin, which could be used for mechanical insertion or removal detection through HS_DET pin. Figure 22 shows the reference circuit for normally-closed (NC) type headset jack. 19 Smart Machine Smart Decision Figure 21: Headset reference circuit Note:
1. SIM8905A-R2 also supports NO/NC type headset jack with detect pin on HPH_L or GND. 2. HPH has a negative swing and requires a bi-directional TVS diode. Table 14: Headphone output performance specifications Parameter Output power Full-scale output Voltage Output load Disabled output impedance Test conditions 16 load f = 1.02 kHz, 0 dB FS; VDD_CP* = 1.95 V 32 load f = 1.02 kHz, 0 dB FS; VDD_CP* = 1.95 V 16 load f = 1.02 kHz, 0 dB FS; VDD_CP* = 1.95 V 32 load f = 1.02 kHz, 0 dB FS; VDD_CP* = 1.95 V Measured externally, with amplifier disabled Min 15.6 27.0 0.50 0.96 13.0 1.0 Typ Max 25.5 21.5 30.8 0.59 0.99 16/32
32.0 0.64 1.00
Units mW mW Vrms Vrms M Note: The VDD_CP is internal Voltage of module. Earpiece Class AB earpiece driver supports 10.67 , 16 , 32 , and up to 50 K loads. Its typical output power at 1.02 KHz, 6 dB gain, and THD + N 1% is:
119 mW with 32 loads 243 mW with 16 loads 320 mW with 10.67 loads 20 Smart Machine Smart Decision Table 15: Earpiece output performance specifications Figure 22: Earpiece reference circuit 32 load f = 1.02 kHz, 6 dB gain THD+N < 1%
Test conditions Min 120.0 Typ 124.5 Max
16 load f = 1.02 kHz, 6 dB gain THD+N < 1%
235.0 243.0 6 dB gain mode f = 1.02 kHz 1.5 dB gain mode f = 1.02 kHz Measured externally, amplifier disabled 1.8 1.0 10.7 1.0 2.0 1.2 32
2.1 1.3
Units mW mW Vrms Vrms M Parameter Output power Full-scale output Voltage Output load Disabled output impedance Speaker Class-D mono differential loud speaker driver supports 4 and 8 loads. The driver is powered from VBAT, and does not support external 5 V Boost Option. Its typical output power at 1.02 KHz, 12 dB gain, and THD + N 1% is:
950 mW with 8 loads, VDD_SPKR=VBAT= 4.2 V 692 mW with 8 loads, VDD_SPKR=VBAT= 3.6 V 1063 mW with 4 loads, VDD_SPKR=VBAT= 3.6 V 21 Smart Machine Smart Decision Figure 23: Speaker reference circuit Table 16: speaker driver output performance specifications Parameter Test conditions Output power (Pout)
(f = 1 kHz, gain = 12 dB, THD+N 1%) THD+N
(1 kHz) 15 H + 8 + 15 H, Vdd = 3.6 V 15 H + 4 + 15 H, Vdd = 3.6 V 15 H + 8 + 15 H, Vdd = 3.8 V 15 H + 8 + 15 H, Vdd = 4.2 V 1 W Pout, VDD_SPKR = 4.2 V 800 mW Pout, VDD_SPKR = 4.2 V 600 mW Pout, VDD_SPKR = 3.8 V 500 mW Pout, VDD_SPKR = 3.6 V Efficiency 500 mW Pout, 15 H + 8 + 15 H Vdd = 3.7 V 1 W Pout, 15 H + 4 + 15 H output impedance Disabled Shutdown current Turn on time Microphone bias Min 584 862 662 819
82.0 73.0 25
Typ 631 953 710 879
-85.0
-75.0
-75.0
-76.0 84.0 78.0
0.1 0.2 Max
-75.0
-45.0
-70.0
-71.0
1.0 10.0 Units mW mW mW mW dB dB dB dB
k A ms SIM8905A-R2 provides two microphone bias outputs: MIC_BIAS1and MIC_BIAS2. The microphone bias cannot be used for ECM-type microphone. MIC_BIAS1and MIC_BIAS2 could be used for External MEMS microphone as power supply. The microphone bias output performance specifications are shown in the following table:
Table 17: Microphone bias output performance specifications Parameter Test conditions Min Typ Max Units 22 Output voltage No load Output voltage error No load Output current 2 microphone loads of 1.0 to 1.5 mA each Output switch to ground On resistance Sink current Output noise 0.1 F bypass PSRR- Power supply rejection ratio at 20 Hz at 200 Hz to 1 kHz at 5 kHz at 10 kHz at 20 kHz 1.60
-3.00 2.0
2.0 0.0 80 80 80 80 75 Smart Machine Smart Decision
0.00 3.0
2.85 3.00
20
V
mA mA 2.0 4.0 Vrms
dB dB dB dB dB F Output capacitor value 2 External bypass mode1 0.1 0.1 0.5 USIM Interface SIM8905A-R2 supports dual cards dual standby, and card presence detection. Note: The standard software provided by SIMCom only supports single USIM1 card configuration. Table 18: USIM interface pin definitions Pin Name USIM2_DET USIM2_RST USIM2_CLK USIM2_DAT USIM2_VDD USIM1_DET USIM1_RST USIM1_CLK USIM1_DAT USIM1_VDD Pin#
17 18 19 20 21 22 23 24 25 26 Type I O O I/O P I O O I/O P Description USIM2 presence detection USIM2 reset USIM2 clock USIM2 data LDO 15 output for USIM2, 1.8V/2.95V USIM1 presence detection USIM1 reset USIM1 clock USIM1 data LDO 14 output for USIM1, 1.8V/2.95V 23 Smart Machine Smart Decision Figure 24: USIM card reference circuit Note:
USIM_DAT has been pulled up with a 10kohm resistor to USIM_VDD in module. A 220nF shut capacitor on USIM_VDD is used to reduce interference. ADC SIM8905A-R2 provides one 16bits ADC. Its performance parameters are shown as the following table. Table 19: ADC performance parameters Parameter Comments Input voltage range Programmable Resolution Analog input bandwidth Sample rate INL DNL Offset error Gain error Vibrator XO/8 15-bit output 15-bit output Relative to full-scale Relative to full-scale Min 0.1 0.3
Typ
16 100 2.4
Max 1.7 4.5
8 4 1 1 Unit V bits kHz MHz LSB LSB
SIM8905A-R2 supports silent incoming-call alarms with its vibration motor driver. The vibration driver is a programmable voltage output that is referenced to VBAT; when off, its output voltage is VBAT. The motor is connected between VBAT and the VIB_DRV_N pin. The programmable motor voltage ranges from 1.2 to 3.1 V in 100 mV steps. 24 Smart Machine Smart Decision Figure 25: Vibrator reference circuit Antenna Interface SIM8905A-R2 provides two antenna interfaces including MAIN antenna and DRX antenna. To ensure good RF performance, users should meet the following requirements:
Keep the RF traces at 50. Maintain a complete and continuous reference ground plane from antenna pin to the RF connector. The RF traces should be away from any other noisy traces. Keep the RF traces as short as possible. MAIN Antenna reference circuit The recommended circuit is shown as below:
Figure 26: MAIN antenna recommended circuit R1, C1 and C2 are antenna matching components in Figure 27, the value of these components are determined according to the antenna tuning results. By default, R1 is 0, C1 and C2 are reserved. The RF connector in Figure 27 is used to ensure the accuracy and convenience of the conduction testing, so SIMCOM suggest keeping it. If considering Low-Cost BOM, user can cancel the connector. 25 Smart Machine Smart Decision DRX Antenna reference circuit The recommended circuit is shown as below:
Figure 27: DRX antenna recommended circuit R1, C1 and C2 are antenna matching components in Figure 28, the value of these components are determined according to the antenna tuning results. By default, R1 is 0, C1 and C2 are reserved. The RF connector in Figure 28 is used to ensure the accuracy and convenience of the conduction testing, so SIMCOM suggest keeping it. If considering Low-Cost BOM, user can cancel the connector. 26 Smart Machine Smart Decision PCB Layout This section provides PCB layout guidelines for SIM8905A-R2 users to ensure their production against lots of issues, and achieve the optimum performance. Stack-up Options At least, 4-layer through-hole PCB should be chosen for good impedance control and signal shielding. General Placement Guidelines Locate SIM8905A-R2 module in the center of PCB, rather than in the corner. Digital devices and traces should not be placed near sensitive signals like RF and clock. Keep SPKR and MIC away from sensitive RF lines. Table 20: Length of MIPI traces inside the module Pin#
52 53 54 55 56 57 58 59 60 61 63 64 65 66 67 68 70 71 72 73 MIPI_DSI_CLK_M MIPI_DSI_CLK_P MIPI_DSI_LANE0M MIPI_DSI_LANE0P MIPI_DSI_LANE1M MIPI_DSI_LANE1P MIPI_DSI_LANE2M MIPI_DSI_LANE2P MIPI_DSI_LANE3M MIPI_DSI_LANE3P MIPI_CSI0_CLK_M MIPI_CSI0_CLK_P MIPI_CSI0_LN0_M MIPI_CSI0_LN0_P MIPI_CSI0_LN1_M MIPI_CSI0_LN1_P MIPI_CSI1_CLK_M MIPI_CSI1_CLK_P MIPI_CSI1_LN0_M MIPI_CSI1_LN0_P Net Name Length(mm) 8.08 9.03 9.04 8.73 9.29 9.10 8.69 8.95 9.10 9.85 14.04 13.79 13.27 13.23 13.96 14.49 17.21 17.69 16.34 17.25 27 USB Smart Machine Smart Decision 90 differential, 10% trace impedance Differential data pair matching < 6.6 mm (50 ps) External components should be located near the USB connector. Should be routed away from sensitive circuits and signals. If there are test points, place them on the trace to keep branches as short as possible If USB connector is used as the charger input, USB_VBUS node must be routed to the module using extremely wide traces or sub planes. Refer to the following table for the length of USB traces inside the module. Table 21: Length of USB traces inside the module Pin#
13 14 USB_DM USB_DP Net Name Length(mm) 30.58 30.22 SDC Signal Protect other sensitive signals/circuits from SDC corruption. Protect SDC signals from noisy signals (clocks, SMPS, etc.). Up to 200 MHz clock rate 50 nominal, 10% trace impedance CLK to DATA/CMD length matching < 1 mm 3035 termination resistor on clock lines near the module Total routing length < 50 mm recommended Spacing to all other signals = 2x line width Bus capacitance < 15 pF Refer to the following table for the length of SD traces inside the module. Table 22: Length of SD traces inside the module Pin#
39 40 41 42 43 44 SD_CLK SD_CMD SD_DATA0 SD_DATA1 SD_DATA2 SD_DATA3 Net Name Length(mm) 14.24 15.19 14.87 13.63 12.90 13.05 28 Audio Smart Machine Smart Decision Analog input 4 to 5 mil trace widths; 4 to 5 mil spacing between traces Differential route for MIC1P with GND_MIC and MIC2P with GND_MIC;
Isolate from noise sources, such as antenna, RF signals, SMPS, clocks, and other digital signals with fast transients Analog output Coplanar ground fill on both sides (of traces or pair as appropriate); in between ground planes grounds above and below Isolate from noise sources such as antenna, RF signals, SMPS, clocks, and other digital signals with fast transients. EAR output signal route as differential pair with 10 mil trace widths. SPK output signals route as differential pair with 20 mil trace widths with 8 load and 25 mil trace widths with 4 load HPH output signals not a differential pair; 10 mil trace widths for HPH_L and HPH_R; 15 mil trace widths for HPH_GND Connect HPH_GND to the ground pin of the jack connector and route HPH_GND in between HPH_L and HPH_R for best crosstalk minimization 29 SIM8905E Document Electrical and Reliability Absolute Maximum Ratings Absolute maximum ratings reflect the stress levels that, if exceeded, may cause permanent damage to the device. Functionality and reliability are only guaranteed within the operating conditions. Table 23: Absolute maximum ratings Parameter VBAT VBUS VRTC Min
-0.3
-0.3
Max 5 7 3.5 Temperature Range Table 24: Temperature range Parameter Operating temperature Storage temperature Operating Voltage Table 25: Operating voltage Parameter VBAT VBUS VRTC Min
-25
-40 Min 3.4 4.35 2.0 Max
+75
+90 Max 4.4 5.5 3.25 Typ Typ 3.9 5 3.0
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Unit V V V Unit Unit V V V Smart Machine Smart Decision Digital-logic Characteristics Table 26: 1.8 V digital I/O characteristics Parameter Description VIH VIL VOH VOL High-level input voltage Low-level input voltage High-level output voltage Low-level output voltage Min 1.17
1.35
Typ
Max
0.63
0.45 Unit V V V V Table 27: USIM interface characteristics (USIM_VDD=1.8V/2.95V) Parameter Description Min Typ Max Unit VIH VIL VOH VOL High-level input voltage 0.7* USIM_VDD Low-level input voltage
-0.3 High-level output voltage 0.8*USIM_VDD Low-level output voltage 0 Table 28: SD interface characteristics (SD_LDO11 =1.8V) Parameter Description VIH VIL VOH VOL High-level input voltage Low-level input voltage High-level output voltage Low-level output voltage Min 1.27
-0.3 1.4 0 Table 29: SD interface characteristics (SD_LDO11 =2.95V)
Typ
USIM_VDD+0.3 0.2* USIM_VDD USIM_VDD 0.4 Max 2 0.58
0.45 V V V V Unit V V V V Parameter Description Min Typ Max Unit VIH VIL VOH VOL High-level input voltage 0.625* SD_LDO11 Low-level input voltage
-0.3 High-level output voltage 0.75* SD_LDO11 Low-level output voltage 0
SD_LDO11+0.3 0.25* SD_LDO11 SD_LDO11 0.125* SD_LDO11 V V V V
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PWRKEY Characteristics Table 30: PWRKEY characteristics Parameters Description VIH VIL High-level input voltage Low-level input voltage VRTC Characteristics Table 31: VRTC characteristic Parameter Description VRTC-IN IRTC-IN VRTC-OUT IRTC-OUT VRTC input voltage VRTC current consumption VRTC output voltage VRTC output current Smart Machine Smart Decision Min 1.4
Min 2.0
2.5
Typ
Typ 3.0 5 3.1 Max
0.6 Unit V V Max 3.25 10 3.2 2 Unit V uA V mA Current Consumption (VBAT=3.9V) Table 32: Current consumption Parameter Conditions Min Leakage current Off mode Flight mode GSM:
BS-PA-MFRMS=9 BS-PA-MFRMS=5 BS-PA-MFRMS=2 WCDMA, DRX=8 LTE-FDD, standby 1.28s LTE-TDD, standby 1.28s Standby current Peak current Electro-Static Discharge Typ 20 1.22 1.65 1.85 3.00 2.48 2.11 2.56 Max 3.0 Unit uA mA mA mA mA mA mA mA A Electrostatic discharge (ESD) occurs naturally in laboratory and factory environments. An established
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high-voltage potential is always at risk of discharging to a lower potential. If this discharge path is through a Smart Machine Smart Decision semiconductor device, it may result in destructive damage. SIM8905A-R2 must be handled according to the ESD Association standard: ANSI/ESD S20.20-1999, Protection of Electrical and Electronic Parts, Assemblies, and Equipment. Table 33: ESD performance parametersTemperature: 25, Humidity: 45%
Pin VBAT GND Antenna PWRKEY Contact discharge Air discharge 5KV 5KV 5KV 4KV 10 KV 12KV 10KV 6KV Module Operating Frequencies Table 34: Module operating frequencies Frequency Receive Transmit LTE B2 LTE B4 LTE B5 LTE B7 LTE B12 LTE B13 LTE B17 LTE B25 LTE B26 LTE B41 1930-1990 MHz 1850-1910 MHz 2110-2155 MHz 1710-1755 MHz 869-894 MHz 824-849MHz 2620-2690 MHz 2500-2570 MHz 729-746MHz 699-716MHz 746-756MHz 777-787MHz 734-746MHz 704-716MHz 1850-1915MHz 1930-1995MHz 859-894MHz 814-849MHz Physical channel TX: 18600-19199 RX: 600-1199 TX: 19950-20399 RX: 1950-2399 TX: 20400-20649 RX: 2400-2649 TX: 20750-21449 RX: 2750-3449 TX: 23010-23179 RX: 5010-5179 TX: 23180-23279 RX: 5180-5279 TX: 23730-23849 RX: 5730-5849 TX: 26040-26689 RX:8040-8689 TX: 26690-27039 RX: 8690-9039 2555-2655 MHz 2555-2655MHz 40240-41240
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Smart Machine Smart Decision Module Output power Table 35: Conducted transmission power Frequency LTE-FDD B2 LTE-FDD B4 LTE-FDD B5 LTE-FDD B7 LTE-FDD B12 LTE-FDD B13 LTE-FDD B17 LTE-FDD B25 LTE-FDD B26 LTE-TDD B41 Power 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB 23dBm +/-2.7dB Module Receiving Sensitivity Min.
<-40dBm
<-40dBm
<-40dBm
<-40dBm
<-40dBm
<-40dBm
<-40dBm
<-40dBm
<-40dBm
<-40dBm Table 37: Reference sensitivity QPSk PREFSENS
(LTE) E-UTRA Band number 1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz
-95
-97
-95
-95
-94
-94
-94 2 4 5 7 12 13 17 25 26
-102.7
-99.7
-104.7
-101.7
-103.2
-100.2
-101.7
-98.7
-101.2
-102.7
-98.2
-99.7
-98
-100
-98
-98
-97
-97
-97
-96.5
-97.5
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-93.2
-95.2
-92
-94
-93.2
-92
-90.5
-93.5
-94.5
-91.7
-92.7 Duplex mode FDD FDD FDD FDD FDD FDD FDD FDD FDD 41
-99
-96
-94.2
-93 TDD Smart Machine Smart Decision Table 38: WIFI main RF Characteristics Transmission performance Output power EVM Receiving performance 802.11B 802.11G 802.11N 17 20%
15
<-25 12
<-27 dBm dB Receiving sensitivity
-89
-74.5
-72.5 dBm 802.11B 802.11G 802.11N Table 39: BT Main RF Characteristics Transmission performance Output power Receiving performance Receiving sensitivity DH5 9 DH5
-90 2DH5 3DH5 7 7 dBm 2DH5
-80 3DH5
-80 dBm ANT maximum gain(dBi) ANT maximum gain Dipole antenna is used for the module test. Customers can choose the antenna based on the size of the terminal product, as long as the maximum gain requirements are as follows BAND LTE B2 LTE B4 LTE B5 LTE B7 LTE B8 LTE B12 LTE B13 LTE B17 LTE B25 LTE B26 LTE B41 wifi BT 11 6 7.5 11 7.5 7.5 7.5 7.5 6 7.5 11 5 5 Contact us:
Shanghai SIMCom Wireless Solutions Co.,Ltd. Address:
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Building 3, No.289 Linhong Road, ChangNing District, Shanghai, China Tel: + 86 21 3157 5100 Fax: +86 21 3157 5200 URL: http://www.simcom.com/
Smart Machine Smart Decision
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