Title :
Feedback vs. feedforward common-mode control: a comparative study
Author :
Carrillo, J.M. ; Ausin, J.L. ; Merchan, P. ; Duque-Carrillo, J.F.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Extremadura, Badajoz, Spain
Abstract :
A comparison among feedforward (CMFF) and the traditional common-mode feedback (CMFB) loops, based on the most frequently used common-mode (CM) signal detectors for CM control in fully-differential (FD) circuits, is carried out. Simulated results confirm that CMFF shows a better performance in terms of induced nonlinear signal distortion, speed, and amplifier output signal swing. It is demonstrated that feedforward approach results very attractive for low-voltage applications
Keywords :
circuit feedback; differential amplifiers; feedforward; low-power electronics; nonlinear distortion; signal detection; common-mode feedback control; common-mode feedforward control; computer simulation; fully-differential amplifier; low-voltage circuit; nonlinear signal distortion; ouput signal swing; signal detector; CMOS technology; Circuits; Detectors; Distortion; Feedback loop; Negative feedback; Signal detection; Signal processing; Transconductance; Voltage;
Conference_Titel :
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location :
Lisboa
Print_ISBN :
0-7803-5008-1
DOI :
10.1109/ICECS.1998.814900
