Low-Voltage Low-Noise High-CMRR Biopotential Integrated Preamplifier

被引：6

作者：

Cabrera, Carolina ^{[1
]}

Caballero, Renzo ^{[1
,2
]}

Costa-Rauschert, Maria Cecilia ^{[1
,3
]}

Rossi-Aicardi, Conrado ^{[1
]}

Oreggioni, Julian ^{[1
]}

机构：

[1] Univ Republica, Inst Ingn Elect, Montevideo 11300, Uruguay

[2] King Abdullah Univ Sci & Technol KAUST, Thuwal 23955, Saudi Arabia

[3] Graphcore, Silicon Team, Bristol BS1 2PH, Avon, England

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2021年 / 68卷 / 08期

关键词：

Analog integrated circuits; low-power; neural amplifier; differential difference amplifier; bandpass filter; sub-threshold design; high CMRR; CONTINUOUS-TIME FILTER; MU-W; AMPLIFIER;

D O I：

10.1109/TCSI.2020.3035357

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This work presents a novel amplifier architecture which is the input stage of an analog front end targeting the acquisition of biological signals with low voltage supply (1.2 V), low noise, high Common Mode Rejection Ratio (CMRR) and high current efficiency. A prototype, designed and fabricated in a 130 nm CMOS technology, was characterized by simulations and measurements. Our preamplifier presents one of the lowest noise levels reported up-to-date (over the considered bandwidth) while presenting a very competitive performance in other important features. Results from measurements show a bandwidth from 20 Hz to 11 kHz, a CMRR higher than 70 dB, an equivalent input-referred noise as low as 1.3 mu V-rms. The Noise Efficiency Factor (NEF) at 2.5 and Power Efficiency Factor (PEF) at 7.5 are remarkable results.

引用

页码：3232 / 3241

页数：10

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