AirPrime WP8548 Hardware Integration Guide 4118723 Rev 2
Preface Important Notice Due to the nature of wireless communications, transmission and reception of data can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost.
Hardware Integration Guide Patents This product may contain technology developed by or for Sierra Wireless Inc. This product includes technology licensed from QUALCOMM®. This product is manufactured or sold by Sierra Wireless Inc. or its affiliates under one or more patents licensed from InterDigital Group and MMP Portfolio Licensing. Copyright ©2016 Sierra Wireless. All rights reserved.
Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Module Power States . . . . . . . . . .
Hardware Integration Guide Important Compliance Information for North American Users . . . . . . . . . .
1 1: Introduction The AirPrime WP8548 is an industrial-grade LGA 239-pad module that provides voice and data connectivity on HSPA, WCDMA, EDGE and GPRS networks. The module also provides GNSS functionality. Accessories A hardware development kit is available for AirPrime WP-series modules. The kit contains hardware components for evaluating and developing with the module, including: Rev 2 Feb.16 • Development board • Cables • Antennas (Additional antennas may be required to support all bands.
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2 2: Power Power Supply The host provides power to the AirPrime WP8548 through multiple power and ground pins. The host must provide safe and continuous power at all times; the module does not have an independent power supply, or protection circuits to guard against electrical issues. For detailed pinout and voltage / current requirements of this module, see the AirPrime WP8548 Product Technical Specification. Module Power States The module has three main power states, as described in Table 2-1.
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3 3: RF Specifications The AirPrime WP8548 operates on the frequency bands listed below. Table 3-1: WCDMA Frequency Band Support 1 Band Frequency (Tx) Frequency (Rx) B1 1920–1980 2110–2170 B2 1850–1910 1930–1990 B5 824–849 869–894 B6 830–840 875–885 B8 880–915 925–960 B19 830–845 875–890 1. WCDMA channel spacing is 5 MHz, but this can be adjusted to optimize performance in a particular deployment scenario.
Hardware Integration Guide Conducted Tx power Table 3-4: Conducted Tx Max Output Power Tolerances — WCDMA RF band Min Typ Max Notes B1 22 23 24 Connectorized (Class 3) B2 22 23 24 Connectorized (Class 3) B5 22 23 24 Connectorized (Class 3) B6 22 23 24 Connectorized (Class 3) B8 22 23 24 Connectorized (Class 3) B19 22 23 24 Connectorized (Class 3) Table 3-5: Conducted Tx Max Output Power Tolerances — GSM RF band Min Typ Max GSM 850 31 32 33 E-GSM 900 31 32 33 D
4: Routing Constraints and Recommendations This section describes general routing constraints and recommendations for the AirPrime WP8548 module. Note: This is a non-exhaustive list of suggested design guidelines. The developer is responsible for deciding whether to implement these guidelines. General Rules and Recommendations Clock and other high-frequency digital signals (e.g. serial buses) should be routed as far as possible from the module’s analog signals.
Hardware Integration Guide Antenna Sierra Wireless strongly recommends working with an antenna manufacturer either to develop an antenna adapted to the application, or to adapt an existing solution to the application. For information on routing constraints for the RF circuit, see RF Circuit on page 15. PCB Specifications for the Application Board Sensitive signals (such as audio, UIM, and clocks) should be protected by ground planes / fills.
Routing Constraints and Recommendations Note: Figure 4-1 shows separate traces for VBAT_BB and VBAT_RF. If VBAT_BB and VBAT_RF share a single power supply, these traces should be connected. Note: For optimal decoupling, place the capacitors on the underside of the board, directly under the pins. • Filtering capacitors (100 nF to 1500 F) are recommended near the module’s power supply.
Hardware Integration Guide It is recommended to use stripline design if the RF path is fairly long (more than 3cm), since microstrip design is not shielded. Consequently, the RF (transmit) signal may interfere with neighboring electronic circuits. In the same way, the neighboring electronics (micro-controllers, etc.) may interfere with the RF (receive) signal and degrade the reception performance.
Routing Constraints and Recommendations • Ground plane: Sierra Wireless recommends a common ground plane for analog/digital/RF grounds Note: The AirPrime WP8548 does not include any protection against over-voltage. The host device must provide adequate ESD protection on digital circuits and antenna ports as detailed in the following table. Note: The level of protection required depends on your application.
Hardware Integration Guide Signal Reference Schematics DNI UIM1 C5 C6 C7 UIM_DATA GND VPP I/O 10nF 100nF 0 UIM_VCC + DNI C1 C2 C3 VCC RST CLK 0 0 UIM_RESET_N UIM_CLK 0 9 SW_A 10 SW_B UIM1_DET 0 DNI SIM2070-6-0-30-00-A DNI ESD suppressor DNI VGPIO_1V8 DNI 2 1 3 4 6 uClamp 3301P 5 Example ESD suppressor: STMicroelectronics DALC208SC6 Note: Example ESD and SIM connector part numbers listed. Comparable parts may be used instead.
Routing Constraints and Recommendations 10µF VCC_5V0 Replace with FPF2163 if Autorestart is required USB_VBUS VCC_1V8 2 VIN VOUT 2 5 A NC2 VCC Y GND FPF2164 4 DNI 3 51K 5% USB_ID NC1 51K 5% 6 GND2 470 1% 5 51K 5% 1 ISET 7 FLAGB 6 ON GND1 VCC_1V8 3 1 4 Figure 4-4: USB OTG Interface Rev 2 Feb.
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5: Regulatory Compliance and Industry Certifications Important Notice Due to the nature of wireless communications, transmission and reception of data can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost.
Hardware Integration Guide Important Compliance Information for North American Users The AirPrime WP8548 module has been granted modular approval for mobile applications. Integrators may use the AirPrime WP8548 module in their end products without additional FCC / IC (Industry Canada) certification if they meet the following conditions. Otherwise, additional FCC / IC approvals must be obtained. 1. The end product must use the RF trace design approved with the AirPrime WP8548 module.
Regulatory Compliance and Industry Certifications 5. A label must be affixed to the outside of the end product into which the AirPrime WP8548 module is incorporated, with a statement similar to the following: · This device contains FCC ID: N7NWP8 / IC:2417C-WP8. 6. A user manual with the end product must clearly indicate the operating requirements and conditions that must be observed to ensure compliance with current FCC / IC RF exposure guidelines.
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