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No, i'm just saying if Vinp=Vinm=Vbias, where Vbias is not zero, the ideal opamp equation predicts an output of zero. However, when designing opamps this is not true. For the differential amp shown in the image I attached, the inputs are biased at Vbias, but the output is not zero. It should be...
What I'm trying to say is when designing op-amp circuits we use the formula:
Vout=Aol(Vinp-Vinm)
where Vout, Vinp and Vinm.
When designing a single-ended differential amplifier at the transistor level, we bias both inputs to the same DC level. If the above formula was correct, the output...
When we design an op-amp at the transistor level (CMOS), both inputs of the op-amp are biased at the same DC level. The output DC level, however, is not zero. The output is a certain level between Vdd and Vss.
What the op-amp really does is it amplifies the difference of changes in the + and -...
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