Abstract
A low-voltage, low-power analog front-end IC for neural recording implant devices is presented. The proposed IC consists of a low-noise neural amplifier and a programmable active bandpass filter to process neural signals residing in the band of 1 Hz to 5 kHz. The neural amplifier is based on a source-degenerated folded-cascode operational transconductance amplifier (OTA) for good noise performance while the following bandpass filter utilizes a low-power current-mirror based OTA with programmable high-pass cutoff frequencies from 1 Hz to 300 Hz and low-pass cutoff frequencies from 300 Hz to 8 kHz. The total recording analog front-end provides 53.1 dB of voltage gain, 4.68 μVrms of integrated input referred noise within 1 Hz to 10 kHz, and noise efficiency factor of 3.67. The IC is designed using 0.18- μm CMOS process and consumes a total of 3.2 μW at 1-V supply voltage. The layout area of the IC is 0.19 mm².
| Translated title of the contribution | A Low-Voltage Low-Power Analog Front-End IC for Neural Recording Implant Devices |
|---|---|
| Original language | Korean |
| Pages (from-to) | 34-39 |
| Number of pages | 6 |
| Journal | 전자공학회논문지 |
| Volume | 53 |
| Issue number | 10 |
| DOIs | |
| State | Published - 2016 |