Nerual signal recorder with tunable gain amplifier using low transconductance OTA

Dae Hoon Na, Tae Wook Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, multi-channel neural signal recorder with tunable gain filter is proposed. It is characterized by small-gm OTA for lowering cutoff frequency. The prototype of the proposed system is designed in TSMC 0.18 μm CMOS technology. Filter consists of high pass filter of delta-gm structure OTA with 201.06 pA/V transconductance and tunable gain Gm-C low pass filter. Single slope ADC is used to convert filter output into dig-ital bits. The tunable gain range, bandwidth, CMRR and input referred noise of resulting filter are 20-68 dB, 20 Hz - 10 kHz, 185.7 dB at 5 kHz and 319 nV/√ Hz, respectively. Single slope ADC has 40 kS/s sampling rate and 1.2 V input range. Total power consumption per channel is 59 μW.

Original languageEnglish
Title of host publication2010 International SoC Design Conference, ISOCC 2010
Pages43-46
Number of pages4
DOIs
Publication statusPublished - 2010 Dec 1
Event2010 International SoC Design Conference, ISOCC 2010 - Incheon, Korea, Republic of
Duration: 2010 Nov 222010 Nov 23

Publication series

Name2010 International SoC Design Conference, ISOCC 2010

Other

Other2010 International SoC Design Conference, ISOCC 2010
CountryKorea, Republic of
CityIncheon
Period10/11/2210/11/23

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All Science Journal Classification (ASJC) codes

  • Hardware and Architecture

Cite this

Na, D. H., & Kim, T. W. (2010). Nerual signal recorder with tunable gain amplifier using low transconductance OTA. In 2010 International SoC Design Conference, ISOCC 2010 (pp. 43-46). [5682978] (2010 International SoC Design Conference, ISOCC 2010). https://doi.org/10.1109/SOCDC.2010.5682978