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A high slew-rate CMOS amplifier for analog signal processing

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2 Author(s)
Lee, B.W. ; Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA ; Sheu, B.J.

The performances of several types of analog VLSI circuits are limited by the setting behavior of CMOS amplifiers. An amplifier with a nonsaturated input stage which achieves a high slew-rate response is presented. The impact of this slew-rate amplifier on switched-capacitor circuits is described. Prototyping amplifier circuits were fabricated by the MOSIS service using a 2-μm scalable CMOS technology. When biased at a DC power dissipation of 1 mW, the two-stage amplifier achieves a slew rate of 80 V/μs, a positive-supply rejection ratio of 73 dB, and a negative-supply rejection ratio of 57 dB and 50 kHz

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:25 ,  Issue: 3 )