Title :
Gain-enhancement differential amplifier using positive feedback
Author :
Tran, Phuoc T. ; Hess, Herbert L. ; Noren, Kenneth V. ; Ay, Suat
Author_Institution :
Univ. of Idaho, Moscow, ID, USA
Abstract :
This paper presents a differential amplifier design with gain enhancement using positive feedback. Comparing with the standard complementary metal-oxide-semiconductor (CMOS) differential amplifier, the new circuit has improved specifications, such as higher small-signal voltage gain, output voltage swing, and large bandwidth. In addition, the circuit has a built-in tuning capability for adjustable gain or tuning out the process-voltage-temperature (PVT) variations. This paper also presents a comparison of noise and power dissipation that was performed using Spice simulations.
Keywords :
SPICE; circuit feedback; circuit noise; circuit simulation; circuit tuning; differential amplifiers; CMOS differential amplifier; PVT variation; Spice simulation; bandwidth; built-in tuning capability; complementary metal-oxide-semiconductor; differential amplifier design; gain-enhancement differential amplifier; noise; output voltage swing; positive feedback; power dissipation; process-voltage-temperature; small-signal voltage gain; CMOS integrated circuits; Differential amplifiers; Mathematical model; Resistance; Standards; Threshold voltage; Tuning; cross-coupled; differential amplifier; gain enhancement; positive feedback;
Conference_Titel :
Circuits and Systems (MWSCAS), 2012 IEEE 55th International Midwest Symposium on
Conference_Location :
Boise, ID
Print_ISBN :
978-1-4673-2526-4
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2012.6292121
