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Transconductance Amp how to driving large capacitive load

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andy2000akimo

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Transconductance Amp how to driving large capacitive load ?

I need gm function , input v2-v1 /(R) = I ,
constant Gm = Io/ (V2-v2)
if my circuit need GM cell , I think 2 way ,
1. use OPA and resistor connect V->I make
2. use OTA

but as I know , OTA can not driver large capacitive load
, my design need driver > 20u output side capacitive load .
 

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