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Output Impedance of circuit (Read 10152 times)

aaron_do Senior Fellow Offline Posts: 1398	Re: Output Impedance of circuit Reply #15 - Jul 06^th, 2012, 9:18pm NMOS devices are much faster, so you can definitely get a wider bandwidth. lower power consumption, lower input inpedance, more gain or whichever you choose. However, I believe they suffer from poorer flicker noise performance. So if the signal you are sensing has a narrow bandwidth, then PMOS "may" be better.
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pf66 New Member Offline Posts: 2	Re: Output Impedance of circuit Reply #16 - Aug 8^th, 2012, 8:35am Dear Larry, MB PMOS is loading your output node with it's gate cap, try to minimize it's W*L, in order to maintain the same DC point + Loop gain, use smaller Rb (trade-off is power, of course). BTW, why not use Ib instead of Rb?
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