Other Parts Discussed in Thread: INA326
Tool/software:
Dear sir,
We need to design the front end of a signal-conditioning circuit using an instrumentation amplifier. We are using an instrumentation amplifier so that the common mode noise is rejected at the front end.
The input voltage to the op-amp will be +2V or -2V when it is DC and 4Vpk-pk if signal is 14kHz AC sin wave. It should be noted that at any given time, the input will be any one i.e +2V or -2V or 4Vpk-pk. The below figure shows the typical connection which will be used in the application. We expect the input terminals of the OP-AMP to be at same voltage w.r.t midpoint (i.e Ground). If VM1 is 2V then VM2 & VM3 should be equal i.e 1V each.
We understand that INA 826 input has limited common mode voltage and it is not suitable for this application. Please correct us if we are wrong. If so please suggest a suitable instrumentation amplifier part for our application. we eagerly await your recommendation
