EG91 SeriesHardware DesignLTE Standard Module SeriesVersion: 2.1Date: 2021-11-05Status: Released

Quectel EG91 Series Hardware Design

Table

Figure Index

Introduction

safety information

FCC/ISED Regulatory notices

product concept

Key Features

Functional Diagram

Evaluation Board

Application Interfaces

Pin Assignment

Operating Modes

Power Saving

USB Application with USB Remote Wakeup Function

USB Application without USB Suspend Function

power supply

Decrease Voltage Drop

Reference Design for Power Supply

Monitor the Power Supply

Turn off Module

Reset the Module

U)SIM Interfaces

usb interface

UART Interfaces

PCM and I2C Interfaces

SPI Interface

STATUS

ADC Interface

Behaviors of RI

USB_BOOT Interface

GNSS Receiver

Layout Guidelines

Antenna Interfaces

Reference Design of RF Antenna Interface

Reference Design of RF Layout

GNSS Antenna Interface

Antenna Installation

Recommended RF Connector for Antenna Installation

Electrical, Reliability and RadioCharacteristics

Operation and Storage Temperatures

current consumption

RF Output Power

RF Receiving Sensitivity

Electrostatic Discharge

Mechanical Dimensions

Storage, Manufacturing and Packaging

Manufacturing and Soldering

Packaging

Appendix A References

Appendix B GPRS Coding Schemes

EG91 Series

EG91-AUX

EG91-E

EG91-EX

EG91-NA

EG91-NAL

EG91-NAX

EG91-NAXD

EG91-NAXDL

EG91-VX