General-Purpose 3V CMOS Operational Amplifier with a New Constant-Transconductance Input Stage
Design trade-offs for a low-voltage two-stage amplifier in the HP CMOS14 process are presented and some of the issues of low-voltage analog design are discussed. The design of a new constant-transconductance input stage that has a rail-to-rail common-mode input range is described, along with the rail-to-rail class-AB output stage. The performance specifications and area of this amplifier are compared with a similar design in a previous process, CMOS34.
by Derek L. Knee and Charles E. Moore
Article 15 - aug97a15.pdf
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