A 66dB continuous gain adjusting CMOS AGC amplifier with both feedforward and feedback loop

Author

Bai Chunfeng ; Wu Jianhui

Author_Institution

Nat. ASIC Syst. Eng. Res. Center, Southeast Univ., Nanjing, China

fYear

2014

fDate

10-12 Dec. 2014

Firstpage

244

Lastpage

247

Abstract

A CMOS continuous gain adjusting AGC amplifier with 66dB maximum gain and 30MHz bandwidth is proposed in this paper. Such AGC amplifier consumes a power of 1.1mW under the supply of 1.2V. It includes a fast responding feedforward loop and a high linearity feedback loop. Hysteresis comparator is adopted to overcome the ripples of successive detection RSSI, generating stable control word to complete the coarse gain adjustment in less than 2μs, which simplifies the design of VGA. The design is completed in TSMC 130nm CMOS technology and simulation results are given at last.

Keywords

CMOS analogue integrated circuits; automatic gain control; feedback amplifiers; feedforward amplifiers; TSMC CMOS technology; VGA; automatic gain control; coarse gain adjustment; continuous gain adjusting CMOS AGC amplifier; feedback loop; feedforward loop; hysteresis comparator; power 1.1 mW; size 130 nm; variable gain amplifier; voltage 1.2 V; Automatic generation control; Electronics packaging; Feedback loop; Feedforward neural networks; Gain; Gain control; Hysteresis; CMOS AGC amplifier; RSSI; VGA; constiuous gain adjusting; feedback; feedforward; hysteresis comparator;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits (ISIC), 2014 14th International Symposium on

Conference_Location

Singapore

Type

conf

DOI

10.1109/ISICIR.2014.7029456

Filename

7029456