A Current-Reuse Complementary-Input Chopper-Stabilized Amplifier for Neural Recording

被引：0

作者：

Yang, Tan ^{[1
]}

Lu, Junjie ^{[1
]}

Poore, Nicholas ^{[1
]}

Holleman, Jeremy ^{[1
]}

机构：

[1] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA

来源：

2014 IEEE 12TH INTERNATIONAL NEW CIRCUITS AND SYSTEMS CONFERENCE (NEWCAS) | 2014年

关键词：

MU-W; INSTRUMENTATION AMPLIFIER; CMOS;

D O I：

暂无

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 paper presents a current-reuse complementary-input (CRCI) telescopic-cascode chopper stabilized amplifier with low-noise low-power operation. The current-reuse complementary-input strategy doubles the amplifier's effective transconductance by full current-reuse between complementary inputs, which significantly improves the noise-power efficiency. A pseudo-resistor based integrator is used in the DC servo loop to generate a high-pass cutoff below 1 Hz. The proposed amplifier features a mid-band gain of 39.25 dB, bandwidth from 0.12 Hz to 7.6 kHz, and draws 2.57 mu A from a 1.2-V supply and exhibits an input-referred noise of 3.57 mu V-rms integrated from 100 mHz to 100 kHz, corresponding to a noise efficiency factor (NEF) of 2.5. The amplifier is designed in 0.13 mu m 8-metal CMOS process.

引用

页码：85 / 88

页数：4

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