Sir/Madam,
Iam using OPA320 for pH measurement. Its the first stage of signal conditioning and I want to use it as an unity gain amplifier. So I connected pH electrode output to IN+(pin 3) and gave unity feedback by connecting terminals IN-(Pin 4) and out(pin 1).
But iam not getting unity gain.
As adviced later Iam using single supply voltage 0f 5V at V+ and 0V at V-.
Am I proceeding the right way or is anything wrong with the circuit?
Thanks in Advance.