Title :
A small-area voltage regulator with high-bandwidth supply-rejection using a regulated replica in 45nm CMOS SOI
Author :
Toifl, Thomas ; Menolfi, Christian ; Buchmann, Peter ; Kossel, Marcel ; Morf, Thomas ; Schmatz, Martin
Author_Institution :
IBM Zurich Res. Lab. GmbH, Zurich
Abstract :
We present a low dropout voltage regulator which uses a regulated replica in the loop in order to achieve small area, excellent power supply rejection over a wide frequency range, and high loop stability. The regulated replica provides accurate matching of the gm/gds ratio in the current source transistors for the replica and the load path. Power supply rejection of >22 dB was measured up to 1 GHz for a circuit operating at 0.8 V from a 1.0 V supply.
Keywords :
CMOS integrated circuits; constant current sources; silicon-on-insulator; voltage regulators; CMOS SOI; current source transistors; frequency 1 GHz; gm-gds ratio; high-bandwidth supply-rejection; loop stability; low dropout voltage regulator; regulated replica; size 45 nm; small-area voltage regulator; voltage 0.8 V; voltage 1.0 V; Regulators; Solid state circuits; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2008. A-SSCC '08. IEEE Asian
Conference_Location :
Fukuoka
Print_ISBN :
978-1-4244-2604-1
Electronic_ISBN :
978-1-4244-2605-8
DOI :
10.1109/ASSCC.2008.4708752
