Title :
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
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;
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5760-9
DOI :
10.1109/ISCAS.2013.6572221
