Microwatt low-noise variable-gain amplifier

Author

Li, Chun-Yi ; Lin, Yu-Bin ; Rieger, Robert

Author_Institution

Electr. Eng. Dept., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

fYear

2011

fDate

2-4 May 2011

Firstpage

1

Lastpage

4

Abstract

A fully integrated variable gain amplifier circuit is reported in this paper. The amplifier is based on an integrating topology allowing the gain to be controlled by the timing of a clock signal. The recording of physiological signals such as the electroneurogram (ENG) or electromyogram (EMG) is a targeted application. Therefore, low-noise performance and low power consumption are important. Simulated and measured results for a chip fabricated in 0.35μm CMOS technology show a gain range from 10-133 V/V, 169 nV/√Hz input spot noise, a NEF of 10.1 and an active area of 0.017 mm² with a power consumption of 1.44 μW using ±0.9 V supplies.

Keywords

CMOS analogue integrated circuits; amplifiers; integrated circuit noise; low-power electronics; CMOS technology; electromyogram; electroneurogram; fully integrated variable gain amplifier circuit; input spot noise; low power consumption; low-noise performance; microwatt low-noise variable-gain amplifier; power 1.44 muW; size 0.35 mum; voltage 0.9 V; CMOS integrated circuits; Electrodes; Frequency measurement; Gain; Gain measurement; Noise; Transconductance;

fLanguage

English

Publisher

ieee

Conference_Titel

IC Design & Technology (ICICDT), 2011 IEEE International Conference on

Conference_Location

Kaohsiung

ISSN

Pending

Print_ISBN

978-1-4244-9019-6

Type

conf

DOI

10.1109/ICICDT.2011.5783218

Filename

5783218