A Sub-Threshold Voltage Ladder Rectifier for Orthogonal Current-reuse Neural Amplifier

Changhyuk Lee; Ben Johnson; Alyosha Molnar

doi:10.1109/BioCAS.2013.6679713

A Sub-Threshold Voltage Ladder Rectifier for Orthogonal Current-reuse Neural Amplifier

Changhyuk Lee, Ben Johnson, Alyosha Molnar

Cornell University

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

We demonstrate an inductively powered, orthogonal current-reuse multi-channel amplifier for power-efficient neural recording. The power rectifier uses the input swing as a selfsynchronous charge pump, making it a fully passive, full-wave ladder rectifier. The rectifier supplies 10.37 µ W at 1.224V to the multi-channel amplifier, which includes bias generation. The prototype device is fabricated in a TSMC 65nm CMOS process, with an active area of 0.107mm<sup>2</sup>. The maximum measured power conversion efficiency (PCE) is 16.58% with a 184mV input amplitude.

Original language	American English
Title of host publication	2013 IEEE Biomedical Circuits and Systems Conference (BioCAS)
DOIs	https://doi.org/10.1109/BioCAS.2013.6679713
State	Published - 2013
Externally published	Yes

EGS Disciplines

Electrical and Computer Engineering

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abstract = " We demonstrate an inductively powered, orthogonal current-reuse multi-channel amplifier for power-efficient neural recording. The power rectifier uses the input swing as a selfsynchronous charge pump, making it a fully passive, full-wave ladder rectifier. The rectifier supplies 10.37 µ W at 1.224V to the multi-channel amplifier, which includes bias generation. The prototype device is fabricated in a TSMC 65nm CMOS process, with an active area of 0.107mm2. The maximum measured power conversion efficiency (PCE) is 16.58% with a 184mV input amplitude.",

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AU - Molnar, Alyosha

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AB - We demonstrate an inductively powered, orthogonal current-reuse multi-channel amplifier for power-efficient neural recording. The power rectifier uses the input swing as a selfsynchronous charge pump, making it a fully passive, full-wave ladder rectifier. The rectifier supplies 10.37 µ W at 1.224V to the multi-channel amplifier, which includes bias generation. The prototype device is fabricated in a TSMC 65nm CMOS process, with an active area of 0.107mm2. The maximum measured power conversion efficiency (PCE) is 16.58% with a 184mV input amplitude.

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M3 - Chapter

BT - 2013 IEEE Biomedical Circuits and Systems Conference (BioCAS)

ER -

A Sub-Threshold Voltage Ladder Rectifier for Orthogonal Current-reuse Neural Amplifier

Abstract

EGS Disciplines

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