Rainbow-electronics GE863-PY Instrukcja Użytkownika Pobierz pdf (Strona 64)

GE863 Hardware User Guide

1vv0300783 Rev.0 - 10/06/08

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.

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Rainbow-electronics GE863-PY Instrukcja Użytkownika Strona 64