A 33-MHz 70dB-SNR super-source-follower-based low-pass analog filter

Matteis, M. De; Pezzotta, A.; D'Amico, S.; Basçhirotto, A.

doi:10.1109/esscirc.2014.6942097

Cited by 6 publications

(1 citation statement)

References 13 publications

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“…Low frequency circuits are dominated by icker noise, which is reduced in this design by keeping the length of the transistors slightly larger than the minimum acceptable value and by placing P-biquad at the rst stage because it has lower icker noise compared to N-biquad. To compare this lter with other state-of-theart designs, a gure of merit (FOM) is adopted from [21] and given in equation (6) below:…”

Section: Discussionmentioning

confidence: 99%

7.2 nW 68 dB DR Fourth Order Self-compensated Low Pass Filter for Portable ECG Application

Bano

Narejo

Ali

2019

ABE

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This paper describes the designing of a fourth order low-pass lter (LPF) for portable ECG application. The proposed lter is designed by cascading one P-biquad and one N-biquad to form a fourth order lter. It is self-compensated and provides a 0 dB gain. It also acquires the same input and output common mode voltages, which helps to produce higher order lters. It consumes power of 7.2 nW with a supply voltage of 1.2 V. Dynamic range of 68.1 dB with noise of 61.2 µVrms is obtained. The proposed lter is designed for a cutoff frequency of 230 Hz, suitable for ECG application. With 100 Hz frequency and 100 mV pp ac amplitude, HD 3 of 71 dB is achieved. The circuit is simulated in cadence software using Silterra 130 nm CMOS technology. Compared with other state-of-the-art designs, this novel LPF provides the largest dynamic range and the best gure of merit (FOM).

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Section: Discussionmentioning

confidence: 99%