Other Parts Discussed in Thread: REF5050
Hello Team,
We are designing a 0-10V analog output using the DAC DAC80502DRXT.
The VREFIO is powered by the reference IC REF5040AID (4V).
The DAC is powered by a 5V supply (VDD=5V).
The DAC is followed by a non-inverting amplifier with a gain of 2V/V.
So the DAC voltage is doubled by the amplifier.
A 5V out from the DAC will give 10V out from the opamp.
The output of the DAC should swing within the range of 0-5V.
But when we set the configuration BUFF-GAIN bit set to 1 and REF-DIV bit set to 0 the DAC output becomes. What may be the reason for this?
Attached is the circuit.
Also, can I set the DAC to internal reference if the external reference voltage is present at the VREFIO pin?
The external reference voltage we are using is 4V.