Slew-rate enhancement for a single-ended low-power two-stage amplifier

Author

Kassiri, B. Hossein ; Deen, M.J.

Author_Institution

ECE Dept., Univ. of Toronto, Toronto, ON, Canada

fYear

2013

fDate

19-23 May 2013

Firstpage

1829

Lastpage

1832

Abstract

A high slew-rate, two-stage, single-ended amplifier for optical imaging applications is reported. Two auxiliary circuits have been added to the core amplifier to boost the speed of the positive and negative slews. The amplifier is designed using parameters form IBM 0.13 μm technology. It achieves 41.2 dB DC gain, 723 MHz unity-gain bandwidth and 540 V/μs positive and 325 V/μs symmetric slew-rates for a load capacitance of 2 pF. A 357% symmetric improvement is achieved for slew rate while power is only increased by ~3%. The core amplifier dissipates 98 μW from a 1.2 V supply.

Keywords

CMOS integrated circuits; optical images; power amplifiers; IBM technology; auxiliary circuits; bandwidth 723 MHz; core amplifier; load capacitance; negative slews; optical imaging applications; positive slews; power 98 muW; single-ended low- power two-stage amplifier; size 0.13 mum; slew-rate enhancement; slew-rate two-stage single-ended amplifier; symmetric slew-rates; unity-gain bandwidth; voltage 1.2 V; CMOS integrated circuits; Capacitance; Delays; Logic gates; Operational amplifiers; Power demand; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2013 IEEE International Symposium on

Conference_Location

Beijing

ISSN

0271-4302

Print_ISBN

978-1-4673-5760-9

Type

conf

DOI

10.1109/ISCAS.2013.6572221

Filename

6572221