Rainbow Electronics GE863-PY - Manual (Page 64)

GE863 Hardware User Guide
1vv0300783 Rev.0 - 10/06/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 64 of 80
11 DAC and ADC section
11.1 DAC Converter
11.1.1 Description
The GE863 module provides a Digital to Analog Converter. The signal (named DAC_OUT) is
available on BGA Ball #63 of the GE863 module and on pin 17 of PL104 on EVK2 Board (CS1151).
The on board DAC is a 10 bit converter, able to generate a analogue value based a specific input in
the range from 0 up to 1023. However, an external low-pass filter is necessary
Min Max Units
Voltage range (filtered) 0 2,6 Volt
Range 0 1023 Steps
The precision is 10 bits so, if we consider that the maximum voltage is 2V, the integrated voltage
could be calculated with the following formula:
Integrated output voltage = 2 * value / 1023
DAC_OUT line must be integrated (for example with a low band pass filter) in order to obtain an
analog voltage.