Title :
Using DTMOS technique in the design of common mode feedback in a 0.8 V folded cascode amplifier
Author :
Maymandi-Nejad, Mohammad ; Sachdev, Munoj
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
A continuous time common mode feedback (CMFB) technique for sub 1-V analog circuits using the bulk PMOS dynamic threshold (BP-DTMOS) technique is presented. The proposed method is used in a 0.8 V folded cascode amplifier. The amplifier with embedded CMFB is implemented in 0.18 μm CMOS technology. The measurement data as well as simulation results are presented in this paper. The measurement results show that this technique improves the CMRR by 12 dB and helps reduce the common mode errors caused by process or environmental variations.
Keywords :
CMOS analogue integrated circuits; feedback amplifiers; prosthetics; 0.8 V; 1 V; 12 dB; analog circuits; bulk PMOS dynamic threshold technique; continuous time common mode feedback; folded cascode amplifier; Analog circuits; Batteries; Biomedical measurements; CMOS technology; Circuit simulation; Fabrication; Feedback; Low voltage; Signal to noise ratio; Tail;
Conference_Titel :
Biomedical Circuits and Systems, 2004 IEEE International Workshop on
Print_ISBN :
0-7803-8665-5
DOI :
10.1109/BIOCAS.2004.1454100
