A Low Noise Low Power DC Coupled Sensor Amplifier With Offset Cancellation

被引：0

作者：

Krishnamurthy, Hari Krishnan ^{[1
]}

Robinson, Dirk ^{[1
]}

Rector, Dave M. ^{[1
]}

La Rue, George S. ^{[1
]}

机构：

[1] Washington State Univ, Pullman, WA 99164 USA

来源：

2010 EIGHTH IEEE WORKSHOP ON MICROELECTRONICS AND ELECTRON DEVICES (IEEE WMED 2010) | 2010年

关键词：

sensor amplifier; DC offset cancellation; charge pump; low noise; low power;

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：

A 16-channel sensor amplifier was designed in the Jazz 0.18 mu m CMOS process. The sensor amplifier has programmable gain from 20 to 2000 and a DC offset cancellation of +/- 0.3V using bulk voltage control. A charge pump, band gap reference and a resistor string DAC were designed for bulk voltage control. Input referred noise of 0.465 mu V was achieved at a gain of 2000. The power required per channel was 900 mu W and the supply voltages were mu V. Simulation results show the total harmonic distortion to be 0.017% and signal-to-noise-and-distortion (SINAD) ratio is 78 dB.

引用

页数：4

共 6 条

[1]

DAGTEKIN M, 2001, P 23 ANN EMBS INT C, P757

[2] A low-power low-noise CMOS amplifier for neural recording applications [J].