AirPrime EM7690 Hardware Integration Guide 41114263 Rev 1 June 18, 2021 Proprietary and Confidential Contents subject to change
AirPrime EM7690 Hardware Integration Guide 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.
AirPrime EM7690 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 MMP Portfolio Licensing. Copyright © 2021 Sierra Wireless. All rights reserved.
AirPrime EM7690 Hardware Integration Guide Contents 1. INTRODUCTION .................................................................................................. 5 1.1. Accessories ......................................................................................................................... 5 1.2. Required Connectors ........................................................................................................... 5 2. POWER .....................................................
1. 1 Introduction The Sierra Wireless EM7690 Embedded Module is a FirstNet-ready (B14 LTE) M.2 module and provides 4G LTE advanced Pro, 3G (HSPA+, UMTS), and GNSS connectivity for a wide range of devices and purposes, including business, personal, and portable computing and communication devices, IoT devices, M2M applications and industrial use cases. EM7690 Embedded Modules are available in a variety of region-specific and function-specific SKUs. 1.1.
2. 2.1. Power 2 Power Supply The host provides power to the EM7690 through multiple power and ground pins as summarized in Table 2-1. The host must provide safe and continuous power (via battery or a regulated power supply) at all times; the module does not have an independent power supply, or protection circuits to guard against electrical issues. Table 2-1 Power and Ground Specifications Name Pins VCC (3.3V) 2, 4, 24, 38, 68, 70, 72, 74 GND Specification Min Typ Max Units Voltage range 3.
AirPrime EM7690 Hardware Integration Guide Power Details Host Is Powered Host Interface Active RF Enabled Low Power (Airplane Mode) Module is active Module enters this state: Under host interface control: Host issues AT+CFUN=0 (3GPP TS 27.007), or Host asserts W_DISABLE#, after AT!PCOFFEN=0 has been issued.
AirPrime EM7690 Hardware Integration Guide current_vcc TEMP_HI_WARN Normal mode current_vcc >VOLT_LO_NORM current_temp < TEMP_HI_NORM Power Normal mode Low supply voltage warning or High temperature warning current_vcc < VOLT_LO_CRIT current_temp > TEMP_HI_CRIT current_vcc > VOLT_HI_CRIT current_temp < TEMP_LO_CRIT current_vcc < VOLT_HI_NORM current_temp > TEMP_NORM_LO Figure 2-1 Note: 41114263 Low power mode Handled by Power State state machine.
AirPrime EM7690 Hardware Integration Guide 3. RF Specifications RF Specifications 3 The EM7690 includes four MHF4 RF connectors for use with host-supplied antennas. Figure 3-1 Module Connectors Include Image with Spacing Info LTE/WCDMA/GNSS connectors: Main: Primary Tx/PRx path for 3G/4G Auxiliary: Diversity Rx and GNSS L1 MIMO1: MIMO1 Rx Path MIMO2: MIMO2 Rx Path and GNSS L5 3.1.
AirPrime EM7690 Hardware Integration Guide 3.2. RF Specifications 3G/4G Antennas and Cabling When selecting the 3G/4G antennas and cables, it is critical to RF performance to match antenna gain and cable loss. Note: There is no explicit list of antennas required in the application. The PWB-6-60-RSMAP Wide Band 4G Terminal Paddle Antenna has been verified as a reference. For detailed electrical performance criteria, see Antenna Specification.
AirPrime EM7690 Hardware Integration Guide RF Specifications Connect to system ground using the ground hole shown in Figure 3-1. Minimize ground noise leakage into the RF. Depending on the host board design, noise could potentially be coupled to the module from the host board. This is mainly an issue for host designs that have signals traveling along the length of the module, or circuitry operating at both ends of the module interconnects. 3.4.
AirPrime EM7690 Hardware Integration Guide RF Specifications effect of device-generated RF on Rx performance: Put the antenna as far as possible from sources of interference. The drawback is that the module may be less convenient to use. Shield the host device. The module itself is well shielded to avoid external interference. However, the antenna cannot be shielded for obvious reasons.
AirPrime EM7690 Hardware Integration Guide 3.6. RF Specifications Supported Frequencies The EM7690 supports data operation on 4G LTE and 3G networks over the bands described in Table 3-2.
AirPrime EM7690 Hardware Integration Guide 42 RF Specifications Yes 3400–3600 MHz (TDD) 3600–3800 MHz (TDD) 43 Yes 46 Yes 48 Yes 66 Yes 1710–1780 MHz 2110–2200 MHz 71 Yes 663–698 MHz 617–652 MHz Table 3-4 Band N/A 5150–5925 MHz (TDD) 3550–3700 MHz (TDD) LTE Bandwidth Support1 1.
AirPrime EM7690 Hardware Integration Guide 3.7. RF Specifications Antenna Specification This appendix describes recommended electrical performance criteria for 3G/4G and GNSS antennas used with AirPrime embedded modules. The performance specifications described in this section are valid while antennas are mounted in the host device with antenna feed cables routed in their final application configuration.
AirPrime EM7690 Hardware Integration Guide >10dB for all antennas at all bands frequency range. Isolation >20dB for Ant1 and Ant4 at B41 frequency range. Power Handling >1W RF Specifications If antennas can be moved, test all positions for both antennas. Make sure all other wireless devices (Bluetooth or WLAN antennas, etc.) are turned OFF to avoid interference.
AirPrime EM7690 Hardware Integration Guide Polarization Note: 41114263 RF Specifications Any other than LHCP (left-hand circular polarized) is acceptable. GNSS active antenna is forbidden to use.
AirPrime EM7690 Hardware Integration Guide Regulatory Compliance and Industry Certification 4.
Regulatory Compliance and Industry Certification AirPrime EM7690 Hardware Integration Guide 4.3. Important Compliance Information for the United States and Canada The EM7690 module, upon commercial release, will have been granted modular approval for mobile applications. Integrators may use the EM7690 module in their final products without additional FCC/IC (Industry Canada) certification if they meet the following conditions. Otherwise, additional FCC/IC approvals must be obtained. 1.
Regulatory Compliance and Industry Certification AirPrime EM7690 Hardware Integration Guide Collocated transmitters Note: LTE B42/B43 3450 3650 24.8 -1.8 -1.8 LTE B48 3550 3700 24.8 -1.8 -1.8 LTE B66 1710 1780 24 5.5 5.5 LTE B71 663 698 24 5.5 5 WLAN 2.
5. Table 5-1 Abbreviations 5 Abbreviations and Definitions Abbreviation or Term Definition 3GPP 3rd Generation Partnership Project BeiDou BeiDou Navigation Satellite System A Chinese system that uses a series of satellites in geostationary and middle earth orbits to provide navigational data.
AirPrime EM7690 Hardware Integration Guide Abbreviation or Term Abbreviations Definition OTA Over the air (or radiated through the antenna) PCB Printed Circuit Board PST Product Support Tools PTCRB PCS Type Certification Review Board QZSS Quasi-Zenith Satellite System — Japanese system for satellite-based augmentation of GPS.
