User's Manual

M590 GPRS Module Hardware User Guide

4 Electric Features and Reliability

4.1 Electric Feature

Table 4-1 Electric feature of the module

Parameter Minimum Value Typical Value Maximum Value

VBAT

Vin 3.5V 3.9V 4.3V

Iin / / 2A

VDD_EXT

Vout

/ 2.8V /

Iout / / 50mA

DIO

Vout

2.3V 2.8V 3.1V

Iout / / 4mA

Vin -0.3V 0V 0.6V

Iin / / 22.5uA

If the voltage is too low, the module might fail to start. If the voltage is too high or there is a voltage burst

during the startup, the module might be damaged permanently.

If you use LDO or DC-DC to supply power for the module, ensure that it output at least 2 A current.

4.2 Temperature

Table 4-2 Temperature Feature

Module Status Minimum Value Typical Value Maximum Value

Working

-40

℃

Storage

-45

℃

If the module works in temperature exceeding the thresholds, its RF performance (e.g. frequency

deviation or phase deviation) might be worse but it can still work properly.