| Autor: |
Zhu L, Zhou Z, Wang W, Xie S, Meng Q, Wang Z |
| Jazyk: |
angličtina |
| Zdroj: |
IEEE transactions on biomedical circuits and systems [IEEE Trans Biomed Circuits Syst] 2024 Feb; Vol. 18 (1), pp. 100-110. Date of Electronic Publication: 2024 Jan 26. |
| DOI: |
10.1109/TBCAS.2023.3311465 |
| Abstrakt: |
This article introduces a Combined .symmetrical and complementary Input Pairs (CIP) of a Differential Difference Amplifier (DDA), to boost the total Common-Mode Rejection Ratio (CMRR) for multi-channel neural signal recording. The proposed CIP-DDA employs three input pairs (transconductors). The dc-coupled input neural signal connection, via the gate terminal of the first transconductor, yields a high input impedance. The high-pass corner frequency and dc quiescent operation point are stabilized by the second transconductor. The calibration path of differential-mode gain and Common-Mode Feedback (CMFB) is provided by the proposed third transconductor. The parallel connection has no need for extra voltage headroom of input and output. The proposed CIP-DDA is targeted at integrated circuit realization and designed in a 0.18-μm CMOS technology. The proposed CIP-DDAs with system CMFB achieve an average CMRR of 103 dB, and each channel consumes circa 3.6 μW power consumption. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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