User's Manual

UL865-N3G Hardware User Guide
1VV0301177 Rev 2– 2015-04-20
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Reserved. Page 54 of 70
Mod. 0805 2011-07 Rev.2
14. DAC and ADC section
14.1. DAC Converter
14.1.1. Description
The UL865-N3G V2 provides a Digital to Analog Converter. The signal (named DAC_OUT)
is available on pin 15 of the UL865-N3G V2.
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.