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suppose i have a OTA circuit and the configuration is that the two 2stage op amps are connected with a current multiplier with feed back....how can i increase the gain?
What's the problem?
Did you consider input impedance on load
Use CMOS unbuffered inverter or FET complementary buffer between stages.
Choose based on Vth and RdsOn. Or simply try a 15V logic gate.
BTW the RdsOn of an old technology CMOS inverter is around 500 ohms and with negative feedback becomes a linear amplifier.
Modern ones are low voltage are 25 ohms in 7 xxxALVC2 ? types. or the type used in MEGA chips.
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