Fully differential signal system including common mode feedback circuit

摘要

Provided is a fully differential signal system including a first amplification unit including first and second output terminals configured to output an output differential signal generated based on an input differential signal and a common mode feedback signal; a common mode detection unit configured to detect a common mode signal included in the output differential signal; a second amplification unit including a feedback signal output terminal configured to output the common mode feedback signal generated based on the detected common mode signal and a reference signal; a first stabilization unit connected between the first output terminal and the feedback signal output terminal; and a second stabilization unit connected between the second output terminal and the feedback signal output terminal. The fully differential signal system stably operates and an operation performance of the fully differential signal system is improved.

主权项

1. A fully differential signal system comprising:
a first amplification unit comprising first and second output terminals configured to output first and second components of an output differential signal generated based on an input differential signal and a common mode feedback signal; a common mode detection unit configured to detect a common mode signal included in the output differential based on the output of both the first component and the second component of the output differential signal; a second amplification unit comprising a feedback signal output terminal configured to output the common mode feedback signal generated based on the detected common mode signal and a reference signal; a first stabilization unit connected between the first output terminal and the feedback signal output terminal; and a second stabilization unit connected between the second output terminal and the feedback signal output terminal.