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Thank you, Tata,
But what I mean is that for a robust circuit, the bandwidth of CMFB should be larger or smaller than that of the signal loop.
For example, if we design a fully-differential opamp with the bandwidth of 20MHz, then how do we choose the bandwidth of its CMFB? how large is the...
when designing a fully-differential opamp,
how to determine the bandwidths of CMFB and the main signal loop?
should be the bandwidth of CMFB less than that of signal loop?
what range should its bandwidth's ratio be fallen in?
thaniks a lot
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