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INA322: INA322

Part Number: INA322


I need support for INA322.

I attached the TINA file and we have a protoype. Vd is sinewave, amplitude 500uV 0DC 1kHz.... Vcm=2.5V.

The issue is that at the output DC value is higher than 500mV.

For example if we short V+ and V- with a Vcm=2.5V the output should be Vref.... and the simulation confirms that.

On the prototype, when we short V+/V- the output is higher than Vref... for example if Vref is 200mV, at the output we have about 250mV. Resistors used are 0.1% tolerance. Gain is 500.

What is the reason about this mismatch with the simulation?

Can you suppor me?


Best Regards.