Title :
A high-gain offset-compensated differential amplifier
Author :
Petrie, Craig ; Sun, Tianxue ; Miller, Matt
Author_Institution :
Analog & Mixed-Signal Circuits Lab, Brigham Young Univ., Provo, UT, USA
Abstract :
An offset-compensated CMOS amplifier with low input capacitance and high gain, ideal for use as a comparator preamplifier, is presented. A capacitive coupling network is used to create a high-impedance load-stage that requires no additional common-mode feedback circuitry. Capacitors are small enough to be constructed using metal fringe structures, resulting in an efficient layout. Analysis, simulation results, and the layout implementation are presented.
Keywords :
CMOS integrated circuits; capacitors; coupled circuits; differential amplifiers; capacitive coupling network; common-mode feedback circuitry; comparator preamplifier; high-gain differential amplifier; high-impedance load-stage; metal fringe structures; offset-compensated CMOS amplifier; offset-compensated differential amplifier; CMOS technology; Capacitance; Capacitors; Circuit analysis; Circuit simulation; Clocks; Differential amplifiers; Feedback circuits; Preamplifiers; Voltage;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328238
