一种用于生理信号采集的混合OTA-C陷波滤波器

2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI:10.1109/ICITEED.2015.7408999

Surachoke Thanapitak, C. Sawigun

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引用次数: 3

摘要

本文提出了一种混合OTA- c结构，该结构由一个普通差分OTA和一个公共漏极组成，作为一个50 Hz信号衰减的全差分陷波滤波器。该陷波滤波器在0.1% THD下的功耗和线性范围为0.525 nW和300 mVPP。这种设计只要求二阶陷波滤波器的总电容为6.66 pF。

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A hybrid OTA-C notch filter for physiological signal acquisition

In this paper, a hybrid OTA-C structure which consists of an ordinary differential OTA and a common drain is constructed as a fully differential notch filter for 50 Hz signal attenuation. The power consumption and linear range of this notch filter is 0.525 nW and 300 mVPP at 0.1% THD. This design only requires the total capacitance at 6.66 pF for the second order notch filter.

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2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)

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