User's Manual
Table Of Contents
- 1 Overview
- 2 GE864-QUAD V2 Mechanical Dimensions
- 3 GE864-QUAD V2 module connections
- 4 Hardware Commands
- 5 Power Supply
- 6 Antenna
- 7 Logic level specifications
- 8 Serial Ports
- 9 Audio Section Overview
- 10 General Purpose I/O
- 10.1 GPIO Logic levels
- 10.2 Using a GPIO Pad as INPUT
- 10.3 Using a GPIO Pad as OUTPUT
- 10.4 Using the RF Transmission Control GPIO4
- 10.5 Using the RFTXMON Output GPIO5
- 10.6 Using the Alarm Output GPIO6
- 10.7 Using the Buzzer Output GPIO7
- 10.8 Indication of network service availability
- 10.9 RTC Bypass out
- 10.10 External SIM Holder Implementation
- 11 DAC and ADC section
- 12 Conformity Assessment Issues
- 14 Document Change Log
GE864-QUAD V2 Hardware User Guide
1vv0300841 Rev.0.1 24/11/09
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 54 of 65
11.2 ADC Converter
11.2.1 Description
The on board A/D are 11-bit converter. They are able to read a voltage level in the range of 0รท1.9
volts applied on the ADC pin input, store and convert it into 11 bit word.
Min Max Units
Input Voltage range 0 1.9 Volt
AD conversion - 11 bits
Resolution - < 1 mV
The GE864-QUAD V2 module provides 2 Analog to Digital Converters. The input lines are:
ADC_IN1 available on Ball J11 and Pin 19 of PL102 on EVK2 Board.
ADC_IN2 available on Ball H11 and Pin 20 of PL102 on EVK2 Board.
11.2.2 Using ADC Converter
An AT command is available to use the ADC function.
The command is AT#ADC=1,2
The read value is expressed in mV
Refer to SW User Guide or AT Commands Reference Guide for the full description of this function.