A 1V CMOS switched-opamp switched-capacitor pseudo-2-path filter

Switched-opamp (SO) techniques were explored to operate switched-capacitor (SO) circuits in 1 voltage supply without on-chip voltage multipliers. Two components, an operational amplifier (opamp) with 69dB low-frequency gain with 45 degree phase margin and 7MHz unity-gain frequency, and a switched ca...

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Bibliographic Details
Main Authors: Cheung, V, Luong, H, Ki, W-H
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:Switched-opamp (SO) techniques were explored to operate switched-capacitor (SO) circuits in 1 voltage supply without on-chip voltage multipliers. Two components, an operational amplifier (opamp) with 69dB low-frequency gain with 45 degree phase margin and 7MHz unity-gain frequency, and a switched capacitor (SC) filter with 1.7kHz bandwidth and 1dB passband gain were achieved. The opamp was designed using complementary metal oxide semiconductor (CMOS) technology.
ISSN:0193-6530