Hello friends,
I wish to do a noise simulation on a current source controller using the LT1167 instrumentation amplifier and the AD8672 low noise op-amp. what is the correct approach for noise simulation on a indirect feedback circuit like this? In LTspice, the noise simulation requires an ac noise. Attached is the circuit configured in its normal operating condition. I wish to find the total output noise from the LT1167 inputs to Vout. where should i connect my noise voltage V4 so my Vout noise is the sum of the two ICs assuming resistors are noiseless?
Thank you in advance for you help!