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Fully differential switched opamp with enhanced common mode feedback

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2 Author(s)
M. Waltari ; Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland ; K. Halonen

A switched op amp with a fast common mode feedback (CMFB) circuit is presented. The proposed fully differential two stage amplifier needs CMFB only for the second stage, and thus a fast and simple passive CMFB circuit may be used. The amplifier is capable of 1 V operation and has no limitation on the maximum supply voltage

Published in:

Electronics Letters  (Volume:34 ,  Issue: 23 )