Product Specification AirPrime AR Series Preliminary 0.
Product Specification 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.
Product Specification Patents This product may contain technology developed by or for Sierra Wireless Inc. ® This product includes technology licensed from QUALCOMM 3G. Manufactured or sold by Sierra Wireless Inc. or its Licensees under one or more patents licensed from InterDigital Group. Copyright © 2010 Sierra Wireless. All rights reserved. Trademarks ® ® AirCard and Watcher are registered trademarks of Sierra Wireless.
Product Specification Document History Version Date Updates 0.1 December 9, 2009 Creation 0.2 December 14, 2009 Updates for Preliminary release Preliminary Rev 0.
Contents 1. OVERVIEW .......................................................................................................... 8 1.1. Introduction ........................................................................................................................ 8 1.2. Reference Specifications ................................................................................................... 8 2. FEATURES .............................................................................................
List of Figures Figure 1. AR8550/8552 Block Diagram ............................................ Error! Bookmark not defined. Figure 2. Recommended UIM holder implementation .................................................................... 15 Figure 3. AppCAD screenshot for MicroStrip design power mode diagram................................... 16 Figure 4. RF routing examples ....................................................................................................... 17 Figure 5.
List of Tables Table 1: AirPrime AR Series Intelligent Embedded Modules .......................................................... 8 Table 2: Reference specifications ................................................................................................... 8 Table 3: AR8552 modes of operation.............................................................................................. 9 Table 4: AR8550 modes of operation.......................................................................
1. Overview 1.1. Introduction This document is the Hardware Product Specification for the AirPrime AR Series of Intelligent Embedded Modules. It defines the high level product features and illustrates the interfaces for these features. This document is intended to cover the hardware aspects of the product series, including electrical and mechanical.
2. Features This chapter highlights the features of the AirPrime AR Series of Intelligent Embedded Modules. 2.1. Modes of Operation The AR8550 supports quad band GSM operation and WCDMA/HSPA operation in Band II, IV and V. The AR8552 supports quad band GSM operation and WCDMA/HSPA operation in Band I, VI and VIII. All models also support Standalone GNSS operation. For complete details, refer to the tables below.
Product Specification Features Communications Function AR8550/AR8552 Short Message Service (SMS) OTA DTMF Preliminary OTAPA OTASP Forward link only Rev 0.
3. Hardware Specification 3.1. Environmental Specification The environmental specification for both operating and storage are defined in the table below. Table 6: Environmental specifications Parameter Temperature Range -30°C to +75°C (Class A) Ambient Operating Temperature -40°C to +85°C (Class B) Ambient Storage Temperature -40°C to +90°C Ambient Humidity 95% or less 3.2. ESD Specification The AirPrime AR series devices are sensitive to Electrostatic Discharge.
4. RF Specification The section presents the RF interface of the AirPrime AR series intelligent embedded module. The specifications for the CDMA and GSM/WCDMA interfaces are defined. 4.1. GSM/WCDMA Interface This section presents the GSM/GPRS/EDGE/WCDMA RF Specification for the AirPrime AR8550 and AR8552. 4.1.1. GSM/WCDMA Antenna Interface The specification for the GSM/WCDMA Antenna Interface is defined in the table below.
5. GNSS Specification The AirPrime AR series intelligent embedded module includes optional Global Navigation Satellite System (GNSS) capabilities via the Qualcomm gpsOne Gen8 Engine, capable of operation in assisted and stand-alone GPS modes. 5.1. GPS The GPS implementation supports GPS L1 operation centered at 1575.42 MHz (+/- 1 MHz). Preliminary Rev 0.
6. Baseband Specification 6.1. Power Supply The AirPrime AR series is powered via a single regulated DC power supply, 4.0V +5/-10%. The power supply requirements can be found in the following table. Table 11: Power supply requirements Power Supply Min Typ Max Units Main DC Power Input Range 3.6 4.0 4.2 V 0 to 1kHz 200 mVpp >1kHz 50 mVpp AR8550/8552 2.5 A Power Supply Ripple Maximum Current draw AirPrime AR series does not support USB self powered operation.
Product Specification Pad Baseband Specification Name Direction Function V1 USB_D_P In/Out Differential data interface positive T1 USB_D_M In/Out Differential data interface negative The AirPrime AR series will not be damaged if a valid USB_VBUS is supplied while the main DC power is not supplied. Table 14: USB characteristics USB USB_VBUS Figure 1. Preliminary Value Units Voltage range 2.0 – 5.
7. RF Circuit Routing Constraints 7.1. General recommendations To route the RF antenna signals, the following recommendations must be observed for PCB layout: The RF signals must be routed using traces with a 50 Ω characteristic impedance. Basically, the characteristic impedance depends on the dielectric constant (εr) of the material used, trace width (W), trace thickness (T), and height (H) between the trace and the reference ground plane.
Product Specification RF Circuit Routing Constraints Poor routing Correct routing The yellow traces cross the RF trace. There is no signal around the RF path. Figure 3. RF routing examples • Fill the area around the RF traces with ground and ground vias to connect inner ground layers for isolation. • Cut out ground fill under RF signal pads to reduce stray capacitance losses. • Avoid routing RF traces with sharp corners. A smooth radius is recommended.
8. Regulatory Approval Important Notice Because of 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.
Product Specification 4. A label must be affixed to the outside of the end product into which the AR8550 modem is incorporated, with a statement similar to the following: This device contains FCC ID: N7NAR8550 Contains transmitter module IC: 2417C-AR8550 where 2417C-AR8550 is the module’s certification number. 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.
