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On-chip Biasing Technique for Operational Transconductance Amplifier

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samiran_dam

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Dear All,

I need to design a simple single-ended differential input pair OTA for gm-C filter.

Here the Gm-block should operate in open-loop configuration. So if there is no negative dc feedback how can I ensure the output common-mode level. To provide only DC-feedback, I need to use large resistor and large capacitor which is not feasible for on-chip integration. Please suggest me some on-chip biasing technique for such cases.

regards
Sam
 

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