Title: High-gain high-speed operational amplifier in digital 120nm CMOS
Abstract: A fully differential 6-stage 3-signal path operational amplifier in 0.12/spl mu/m digital CMOS technology achieving a differential gain of 120dB at a supply voltage of 1.2V is presented. This operational amplifier uses only regular-threshold transistors. It uses two input stages to assure a sufficient phase margin. The use of six common-mode controllers leads to a good common-mode behavior and to an AB output-stage. A transit frequency of 866MHz and a phase margin of 36/spl deg/ at 1.2V supply with a load of 3.2pF have been measured.
Publication Year: 2004
Publication Date: 2004-12-23
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 10
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