User's Manual

GL865-DUAL/QUAD V3 Hardware User Guide
1vv0301018 Rev.7 – 2013-10-30
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 57 of 78
Mod. 0805 2011-07 Rev.2
12. DAC and ADC section
12.1. DAC Converter
12.1.1. Description
The GL865-DUAL/QUAD V3 provides a Digital to Analog Converter. The signal (named
DAC_OUT) is available on pin 15 of the GL865-DUAL/QUAD V3.
The on board DAC is a 10 bit converter, able to generate an analogue value based on 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
1.8
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.