Abstract:
This paper presents the design of a modified StrongArm regenerative comparator in 0.13-μm CMOS technology, operating at a supply voltage of 200-mV. The comparator uses a ...Show MoreMetadata
Abstract:
This paper presents the design of a modified StrongArm regenerative comparator in 0.13-μm CMOS technology, operating at a supply voltage of 200-mV. The comparator uses a pair of cross-coupled P-type transistors to replace the conventional cross-coupled inverters, improving the comparison time and voltage headroom. A robust S-R latch is proposed to solve the race condition which occurs when the S-R latch enters a forbidden state especially during ultra-low supply voltage operation. As a result, the circuit shows up to 1.8× voltage offset reduction and 73% less sensitivity in the delay per input voltage difference (delay/log(ΔVIN)), which is about 65ns/decade, compared to conventional latched comparators.
Date of Conference: 17-20 November 2014
Date Added to IEEE Xplore: 09 February 2015
Electronic ISBN:978-1-4799-5230-4
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Department of Electrical and Computer Engineering, National University of Singapore, Singapore