A 0.5-V 95-dB rail-to-rail DDA for biosignal processing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F22%3A00358192" target="_blank" >RIV/68407700:21460/22:00358192 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26220/22:PU144638

Výsledek na webu

<a href="https://doi.org/10.1016/j.aeue.2021.154098" target="_blank" >https://doi.org/10.1016/j.aeue.2021.154098</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aeue.2021.154098" target="_blank" >10.1016/j.aeue.2021.154098</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A 0.5-V 95-dB rail-to-rail DDA for biosignal processing

Popis výsledku v původním jazyce

This paper presents a new low-voltage CMOS structure for differential difference amplifier (DDA) optimized for low frequency biosignal processing. The DDA input stage is based on a non-tailed bulk-driven (BD) differential pair offering rail-to-rail input common mode range (ICMR) under 0.5 V voltage supply. Unlike the conventional two differential pairs DDA structure, the proposed one employs one differential pair created by the multiple input MOS transistor (MI-MOST) technique offering simple circuitry. Although the bulk-driven and the MI MOST techniques reduce the amplifier's transconductance, the gain is boosted by increasing the output resistance using a self-cascode transistor and a partial positive feedback. As a result, a 95-dB voltage gain is achieved which is larger than achieved gain for most sub-0.5 V designs presented in the literature. The DDA has 12.66 kHz gain bandwidth product, and consumes 313nW of power. The input thermal noise is 0.88 mu V/Hz1/2 and the average slew-rate is 14.7 V/ms at 20pF load capacitance. As an example of application, a band-pass filter (BPF) based on two DDAs with adjustable gain for electrocardiogram (ECG) signal processing is presented. The 0.18 mu m CMOS technology from TSMC has been used and extensive simulation results in Cadence environment including process, voltage and temperature corners and Monte-Carlo analysis have been carried-out to demonstrate the robustness of the design.

Název v anglickém jazyce

A 0.5-V 95-dB rail-to-rail DDA for biosignal processing

Popis výsledku anglicky

This paper presents a new low-voltage CMOS structure for differential difference amplifier (DDA) optimized for low frequency biosignal processing. The DDA input stage is based on a non-tailed bulk-driven (BD) differential pair offering rail-to-rail input common mode range (ICMR) under 0.5 V voltage supply. Unlike the conventional two differential pairs DDA structure, the proposed one employs one differential pair created by the multiple input MOS transistor (MI-MOST) technique offering simple circuitry. Although the bulk-driven and the MI MOST techniques reduce the amplifier's transconductance, the gain is boosted by increasing the output resistance using a self-cascode transistor and a partial positive feedback. As a result, a 95-dB voltage gain is achieved which is larger than achieved gain for most sub-0.5 V designs presented in the literature. The DDA has 12.66 kHz gain bandwidth product, and consumes 313nW of power. The input thermal noise is 0.88 mu V/Hz1/2 and the average slew-rate is 14.7 V/ms at 20pF load capacitance. As an example of application, a band-pass filter (BPF) based on two DDAs with adjustable gain for electrocardiogram (ECG) signal processing is presented. The 0.18 mu m CMOS technology from TSMC has been used and extensive simulation results in Cadence environment including process, voltage and temperature corners and Monte-Carlo analysis have been carried-out to demonstrate the robustness of the design.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

AEU-International Journal of Electronics and Communications

ISSN

1434-8411

e-ISSN

1618-0399

Svazek periodika

145

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

000795779000003

EID výsledku v databázi Scopus

2-s2.0-85121963434