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AD694 based multi-functional sensor signal conditioner for D to A converter (DAC) of the current loop interface circuit

AD694 can be used as D / A converter (DAC) of the current loop interface, to achieve "digital signal current voltage signal" of the conversion. DAC's current loop interface circuit as shown. AD566A for high-speed 12-bit DAC, its output (DAC OUT) connected AD694's UI-end, UI grounded. AD694 with ± 15V dual supplies, and provide reference voltage to the AD566A. Internal resistor network using AD566A AD694 configured to 10V full scale input. For the frequency compensation capacitor C2. RP for the full scale adjust potentiometer, without a fixed adjustment 50O resistor can be used to replace the potentiometer.

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AD694 based multi-functional sensor signal conditioner for D to A converter (DAC) of the current loop interface circuit