A low power, propagation delay stable, continuous-time comparator
2004 (English)In: Proceedings: NORCHIP, Oslo, Norway, 8 - 9 November 2004, Piscataway, NJ: IEEE Communications Society, 2004, 261-264 p.Conference paper (Refereed)
This paper describes a design strategy towards a low power, DC level insensitive comparator with stable low power, level insensitive comparator with stable propagation time. The comparator b must suitable in applications were a constant propagation delay is critical, such as level crossing detection in ultrasound measurements and level crossing detection in ultrasound measurements and time quantization A/D convertem. The use of a long absolute propagation delay allows low power consumption while keeping the signal dependent propagation delay variation low. The comparator b able to process signals with all DC level within power rails due to a constant-gm, rail-to-rail, single-ended to differential converter implemented in the input stage. Schematic simulations show that the comparator has less than 1 ns delay variation at an absolute propagation delay of 12 ns. Test signals include frequencies from 0.5 MHz to 10 MHz, amplitudes fmm 30 mV to 1 V and all DC levels within rails.
Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2004. 261-264 p.
Research subject Industrial Electronics
IdentifiersURN: urn:nbn:se:ltu:diva-27037DOI: 10.1109/NORCHP.2004.1423873Local ID: 0578ae20-e834-11db-b9a9-000ea68e967bISBN: 0-7803-8510-1OAI: oai:DiVA.org:ltu-27037DiVA: diva2:1000218
NORCHIP Conference : 08/11/2004 - 09/11/2004
Godkänd; 2004; 20070328 (pekkari)2016-09-302016-09-30Bibliographically approved