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Draw a fully-differential folded-cascode OTA (Operational Transconductance Amplifier) with PMOS input differential stage and a CMFB loop back to the tail current source. You do not need to show any bias network. What would be the problem in using this circuit without a CMFB (common-mode feedback) loop? Suggest a real implementation of the common-mode sensing circuit. Mark another node where the CMFB loop could be fed back to.

Draw a fully-differential folded-cascode OTA (Operational Transconductance Amplifier) with PMOS input differential stage and a CMFB loop back to the tail current source. You do not need to show any bias network. What would be the problem in using this circuit without a CMFB (common-mode feedback) loop? Suggest a real implementation of the common-mode sensing circuit. Mark another node where the CMFB loop could be fed back to.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Draw a fully-differential folded-cascode OTA (Operational Transconductance Amplifier) with PMOS input differential stage and a CMFB loop back to the tail current source. You do not need to show any bias network. What would be the problem in using this circuit without a CMFB (common-mode feedback) loop? Suggest a real implementation of the common-mode sensing circuit. Mark another node where the CMFB loop could be fed back to.
Transcribed Image Text:Draw a fully-differential folded-cascode OTA (Operational Transconductance Amplifier) with PMOS input differential stage and a CMFB loop back to the tail current source. You do not need to show any bias network. What would be the problem in using this circuit without a CMFB (common-mode feedback) loop? Suggest a real implementation of the common-mode sensing circuit. Mark another node where the CMFB loop could be fed back to.
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