DIFFERENTIAL-SINGLE PHASE CONVERSION CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a differential-single phase conversion circuit that has a high CMRR characteristic independently of variations in temperature and process conditions.

SOLUTION: A differential-single phase conversion circuit includes: a first amplification circuit for amplifying a first differential signal of a pair of differential signals in a reverse phase relationship and outputting the first differential signal in the same phase; a second amplification circuit for amplifying a second differential signal of the differential signals and outputting the second differential signal in a reversed phase; and an output terminal for outputting a combination of the output signal from the first amplification circuit and the output signal from the second amplification circuit. The second amplification circuit is a cascode circuit comprising a plurality of cascode-connected transistors.

COPYRIGHT: (C)2012,JPO&INPIT