High-gain high-speed operational amplifier in digital 120nm CMOS

Author

Schlögl, F. ; Dietrich, H. ; Zimmermann, H.

Author_Institution

Inst. for Electr. Meas. & Circuit Design, Vienna Univ. of Technol., Austria

fYear

2004

fDate

12-15 Sept. 2004

Firstpage

316

Lastpage

319

Abstract

A fully differential 6-stage 3-signal path operational amplifier in 0.12μm digital CMOS technology achieving a differential gain of 120dB at a supply voltage of 1.2V is presented. This operational amplifier uses only regular-threshold transistors. It uses two input stages to assure a sufficient phase margin. The use of six common-mode controllers leads to a good common-mode behavior and to an AB output-stage. A transit frequency of 866MHz and a phase margin of 36° at 1.2V supply with a load of 3.2pF have been measured.

Keywords

CMOS digital integrated circuits; integrated circuit design; operational amplifiers; 1.2 V; 120 dB; 120 nm; 3.2 pF; 866 MHz; AB output-stage; common-mode behavior; common-mode controllers; differential gain; digital CMOS technology; high-gain operational amplifier; high-speed operational amplifier; threshold transistors; transit frequency; Analog circuits; CMOS technology; Capacitors; Differential amplifiers; Digital circuits; Frequency; Low voltage; Operational amplifiers; Power supplies; Threshold voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

SOC Conference, 2004. Proceedings. IEEE International

Print_ISBN

0-7803-8445-8

Type

conf

DOI

10.1109/SOCC.2004.1362448

Filename

1362448

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2010478