A 1.6mW 0.5GHz open-loop VGA with fast startup and offset calibration for UWB radios

Author

Harpe, Pieter ; Zhou, Cui ; Philips, Kathleen ; De Groot, Harmke

Author_Institution

Holst centre, IMEC, Eindhoven, Netherlands

fYear

2011

fDate

12-16 Sept. 2011

Firstpage

103

Lastpage

106

Abstract

This paper presents a low-power fast-startup wideband VGA with a 6th-order low-pass filter function for UWB radios. A DC-coupled 6-stage open-loop topology is proposed, which includes DC offset calibration and fast-startup biasing circuits. The prototype in 90nm CMOS occupies only 0.075mm², including decoupling capacitors and digital interfacing. The circuit consumes 1.6mW from a 1V supply, achieves -1.2dB up to 37.7dB gain with a programmable bandwidth from 80MHz to 460MHz, and achieves a startup-time of 12ns.

Keywords

CMOS integrated circuits; UHF amplifiers; capacitors; low-pass filters; ultra wideband communication; 6th-order low-pass filter; CMOS integrated circuit; DC offset calibration; DC-coupled 6-stage open-loop topology; UWB radios; bandwidth 80 MHz to 460 MHz; decoupling capacitors; digital interfacing; fast-startup VGA; fast-startup biasing circuits; frequency 0.5 GHz; low-power VGA; open-loop VGA; power 1.6 mW; size 90 nm; variable gain amplifiers; voltage 1 V; wideband VGA; Bandwidth; Calibration; Capacitors; Gain; Mirrors; Power demand; Semiconductor device measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

ESSCIRC (ESSCIRC), 2011 Proceedings of the

Conference_Location

Helsinki

ISSN

1930-8833

Print_ISBN

978-1-4577-0703-2

Electronic_ISBN

1930-8833

Type

conf

DOI

10.1109/ESSCIRC.2011.6044925

Filename

6044925