A 2.1 uW 76 dB SNDR DT-ΔΣ Modulator for Medical Implant Devices
2012 (English)In: NORCHIP 2012, IEEE , 2012, 1-4 p.Conference paper (Refereed)
This paper presents a low-power 2nd-order discrete-time (DT) ΔΣ analog-to-digital converter (ADC) aimed for medical implant devices. The designed ΔΣ modulator with two active integrators (filters) employs power-efficient two-stage load-compensated OTAs with minimal load and rail-to-rail output swing, which provides higher power-efficiency than the two-stage Miller OTA. The modulator, implemented in a 65nm CMOS technology with a core area of 0.033 mm2, achieves 76-dB peak SNDR over a 500 Hz signal bandwidth, while consuming 2.1 µW from a 0.9 V supply voltage. Compared to previously reported modulators for such signal bandwidths, the achieved performance (FOM of 0.4 pJ/step) make the presented modulator one of the best among sub-1-V modulators in term of most commonly used figure of merit.
Place, publisher, year, edition, pages
IEEE , 2012. 1-4 p.
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-86693DOI: 10.1109/NORCHP.2012.6403118ISBN: 978-1-4673-2221-8 (print)ISBN: 978-1-4673-2222-5 (online)OAI: oai:DiVA.org:liu-86693DiVA: diva2:580414
Norchip 2012, 12-13 November 2012, Copenhagen, Denmark