DIFFERENTIAL_CASCODE

Published:2009/6/25 22:43:00 Author:May | From:SeekIC

Direct-coupled single-stage amplifier with differential input and output can be used in one or more stages of high-performance ampimers. Bipolar-JFET caseode arrangement offers significant increase in common-mode input resistance and CMRR as compared to conventional diff erential pair, with little or no degradation of other performance parameters. Differential-mode gain is 116, commdnmode input resistanee is greater than 100 gigohms, CMRR is greaterthan 160 dB, and current-source output resistance is greater than 1 gigohm. Article gives design equations.-R. C.Jaeger and G. A. Hellwarth, Differential Cascode Amplifier Offers Unique Advantages, EDNMag-azine, June 5,1974, p 78 and 80.



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