A 23.7‐uW 93.5‐dB SNDR delta‐sigma modulator for healthcare and medical diagnostics

Autor:	Jianguo Hu, Yao Yao, Renfei Zou, Jiajun He, Deming Wang
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	analogue circuits analogue‐digital conversion delta‐sigma modulation low‐power electronics Electrical engineering. Electronics. Nuclear engineering TK1-9971
Zdroj:	Electronics Letters, Vol 60, Iss 6, Pp n/a-n/a (2024)
Druh dokumentu:	article
ISSN:	1350-911X 0013-5194
DOI:	10.1049/ell2.13151
Popis:	Abstract This paper presents a high‐precision, low‐power delta‐sigma modulator (DSM) designed for healthcare and medical diagnostics. It utilizes a hybrid switching integrator to reduce distortion caused by the non‐linear on‐resistance of switches at a low supply voltage. Leveraging the characteristics of the hybrid switching integrator, a non‐50% duty cycle sampling timing and a corresponding tunable Miller‐compensated operational transconductance amplifier are proposed to reduce resistor thermal noise and meet lower power consumption requirements. The DSM is simulated based on 130‐nm CMOS technology and achieves 93.5‐dB signal‐to‐noise‐plus‐distortion ratio at a 1‐kHz bandwidth while consuming 23.7 µW from a 1.5‐V supply.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/52236ed2ee8b474c94355725f6e1b116 Zobrazit plný text záznamu Plný text View record in DOAJ