A low-noise integrated bioamplifier with active DC offset suppression

机译：具有有源直流失调抑制功能的低噪声集成生物放大器

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This paper describes a novel low-power, low-noise amplifier for neural recording applications. The bioamplifier achieves the best power-size tradeoff compared to the previous design. By means of a new active feedback configuration, the DC offset is rejected without the large capacitors. An active differentiator with an amplifier in the feedback path places a high-pass cutting frequency in the transfer function. The midband gain consists of the passive components, and is insensitive to the mismatch of process. The bioamplifier has been implemented in the Chartered 0.35-μm 2P4M CMOS process and occupies 0.022mm² of chip area. The current consumption of amplifier is 2μA at ±1.5V supply. The bioamplifier achieves a midband gain of 46dB and a −3dB bandwidth from 13Hz to 8.9kHz. The input-referred noise is 5.7μVrms corresponding to an NEF of 3.1.

机译：本文介绍了一种用于神经记录应用的新型低功耗，低噪声放大器。与以前的设计相比，该生物放大器实现了最佳的功率尺寸折衷。通过新的有源反馈配置，无需大电容即可消除直流偏移。反馈路径中带有放大器的有源微分器将高通切割频率置于传递函数中。中频带增益由无源元件组成，并且对过程的失配不敏感。该生物放大器已在特许0.35μm2P4M CMOS工艺中实现，占用芯片面积0.022mm ^{2 。在±1.5V电源下，放大器的电流消耗为2μA。该生物放大器在13Hz至8.9kHz的范围内实现了46dB的中频带增益和-3dB带宽。输入参考噪声为5.7μV rms ，对应于3.1的NEF。}

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《Biomedical Circuits and Systems Conference, 2009. BioCAS 2009》|2009年|5-8|共4页
会议地点 Beijing(CN);Beijing(CN)
作者
Zhao Wei; Li Hongge; Zhang Youguang;
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School of Electronic and Information Engineering, Beihang University, Beijing, China;

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1. A Low-Power Integrated Bioamplifier With Active Low-Frequency Suppression [J] . Gosselin B., Sawan M., Chapman C.A. IEEE transactions on biomedical circuits and systems . 2007,第3期

机译：具有有源低频抑制功能的低功率集成生物放大器
2. Fully Integrated Low-Noise Readout Circuit with Automatic Offset Cancellation Loop for Capacitive Microsensors [J] . Dong-il Dan Cho, Haryong Song, Hyoungho Ko, Sensors . 2015,第10期

机译：完全集成的低噪声读出电路，具有用于电容式微传感器的自动失调消除环路
3. Development of a Low-Noise Front-End Readout Chip Integrated With a High-Resolution TDC for APD-Based Small-Animal PET [J] . Fang X., Gao W., Hu-Guo Ch., Nuclear Science, IEEE Transactions on . 2011,第2期

机译：基于APD的小动物PET的低噪声前端读出芯片与高分辨率TDC的集成开发
4. A Low-Noise Integrated Bioamplifier with Active DC Offset Suppression [C] . Wei Zhao, Hongge Li, Youguang Zhang IEEE Biomedical Circuits and Systems Conference . 2009

机译：具有有源直流偏移抑制的低噪声集成的生物进型器
5. Zero DC offset active RC filter designs. [D] . Odorcic, Kresimir. 2008

机译：零直流偏移有源RC滤波器设计。
6. Fully Integrated Low-Noise Readout Circuit with Automatic Offset Cancellation Loop for Capacitive Microsensors [O] . Haryong Song, Yunjong Park, Hyungseup Kim, 2015

机译：完全集成的低噪声读出电路具有用于电容式微传感器的自动失调消除环路
7. Micropower Integrated Bioamplifier and Auto-ranging ADC for Wireless and Implantable Medical Instrumentation [O] . Yu M. Chi, Gert Cauwenberghs 2014

机译：用于无线和可植入医疗仪器的微功率集成生物放大器和自动量程ADC
8. Novel AC-Amplifier for Electrophysiology: Active DC Suppression With Differential to Differential Amplifier in the Feedback-Loop. [R] . Nikola, J., Ratko, P., Strahinja, D., 2001

机译：用于电生理学的新型aC放大器：在反馈环路中使用差分至差分放大器的有源DC抑制。

A low-noise integrated bioamplifier with active DC offset suppression

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