Title :
Nested feed-forward Gm-stage and ing resistor plus nested-Miller compensation for multistage amplifiers
Author :
Peng, Xiaohong ; Sansen, Willy
Author_Institution :
Katholieke Univ., Leuven, Belgium
Abstract :
A new frequency-compensation topology (NGRNMC) is proposed, which improves the frequency characteristics and transient response of multistage amplifiers while minimizing the power consumption. Comparisons are made to demonstrate the advantages of the topology. A three-stage fully-differential NGRNMC amplifier, driving two 16 pF capacitors with 80 MHz GBW, is fabricated in a 0.35 μm CMOS process, confirming the experimental results. Criteria are proposed to accurately evaluate and compare amplifiers implemented in different operating conditions.
Keywords :
CMOS analogue integrated circuits; compensation; differential amplifiers; feedback amplifiers; feedforward; frequency response; low-power electronics; transient response; 0.35 micron; 80 MHz; CMOS process; frequency characteristics; frequency-compensation topology; fully-differential amplifier; ing resistor; multistage amplifiers; nested feed-forward Gm-stage; nested-Miller compensation; power consumption; three-stage amplifier; transient response; Capacitors; Energy consumption; Feedforward systems; Frequency; Parasitic capacitance; Power amplifiers; Resistors; Stability; Topology; Transient response;
Conference_Titel :
Custom Integrated Circuits Conference, 2002. Proceedings of the IEEE 2002
Print_ISBN :
0-7803-7250-6
DOI :
10.1109/CICC.2002.1012832
