Title :
Low-voltage differential amplifier
Author :
Raikos, George ; Vlassis, Spyridon
Author_Institution :
Phys. Dept., Univ. of Patras, Rio Patras, Greece
Abstract :
A low-voltage differential amplifier constructed by bulk-driven PMOS transistors is proposed in this paper. A local positive feedback is utilized that boosts the input transconductance and improve the noise performance. The input common-mode range is also compared to the gate-driven counterpart. A 5th order Chebyshev active RC filter with 500 kHz cut-off frequency and 1 dB ripple is built based on the proposed amplifier. All circuits were implemented with 1 V supply voltage using standard 0.35 um CMOS process presenting very promising performances.
Keywords :
CMOS analogue integrated circuits; circuit feedback; differential amplifiers; integrated circuit design; low-power electronics; CMOS process; Chebyshev active RC filter; bulk-driven PMOS transistors; input common-mode range; low-voltage differential amplifier; positive feedback; size 0.35 mum; voltage 1 V; Active filters; CMOS process; Chebyshev approximation; Circuit noise; Cutoff frequency; Differential amplifiers; Feedback; MOSFETs; Transconductance; Voltage;
Conference_Titel :
Electronics, Circuits, and Systems, 2009. ICECS 2009. 16th IEEE International Conference on
Conference_Location :
Yasmine Hammamet
Print_ISBN :
978-1-4244-5090-9
Electronic_ISBN :
978-1-4244-5091-6
DOI :
10.1109/ICECS.2009.5410954
