Operational Amplifier with Two-Stage Gain-Boost
نویسندگان
چکیده
In this paper we present a three-stage fully differential operational amplifier in 120nm digital CMOS. To reach high gain gain-boosted cascodes in the first stage are used. The gain-boost amplifiers are realized as two-stage amplifiers with self cascodes. A DC gain of 108dB and an unity-gain frequency of 1.06GHz are achieved at 1.2V supply. The operational amplifier is appropriate for supply voltages from 1.5V down to 1.0V. Key-Words: Operational Amplifier, Gain Boost, Self Cascode, 120nm CMOS
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