diarmuid
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Hi All,
I have a folded cascode OTA with PMOS input diff pair. Just
like the attached excepte with CMFB from "voutn" to "vbp2".
Pretty standard architecture. I can see how M4A increases output
impedance but am a little confused as to exactly how M2A increases output
impedance.
Is this NMOS cascode present to increase output impedance? If so, could you
please illustrate with an example.
Cheers,
Diarmuid
I have a folded cascode OTA with PMOS input diff pair. Just
like the attached excepte with CMFB from "voutn" to "vbp2".
Pretty standard architecture. I can see how M4A increases output
impedance but am a little confused as to exactly how M2A increases output
impedance.
Is this NMOS cascode present to increase output impedance? If so, could you
please illustrate with an example.
Cheers,
Diarmuid