TY - GEN
T1 - A 370-nW Quad-Channel Multi-Mode Bio-Signal Acquisition AFE with 2.9-μVrms Input Noise
AU - Fath, Patrick
AU - Pretl, Harald
PY - 2023/10
Y1 - 2023/10
N2 - This paper presents a reconfigurable 4-channel
electromyography, electrocardiogram, or electroencephalography
bio-signal acquisition analog frontend (Bio-AFE), which is part
of a chiplet further containing an ADC and an ultra-wideband
transmitter for digitization and wireless data transmission, an on-
chip clock-generation, and an LDO including reference. The chip
occupies an area of 3.64 mm2 in 180 -nm 1P6M CMOS. A flexible
recording of bio-signals is possible due to several bandwidth and
gain modes (0.2 Hz to 128/512/2048 Hz, and 19.9 dB to 53.1 dB,
respectively). Simultaneously, a high common-mode rejection
ratio of 81.6 dB, a differential input impedance of 216 MΩ, and a
low input-referred noise ranging from 2.9 μVrms to 7.1 μVrms are
essential for a recording of the low-amplitude bio-signals. The
(mode dependent) low power consumption of 0.37 μW to 1 μW of
the Bio-AFE from a 1 V supply enables battery- or RF-powered
applications, which allows new possibilities of bio-signal based
tests while treating patients with neurological disorders.
AB - This paper presents a reconfigurable 4-channel
electromyography, electrocardiogram, or electroencephalography
bio-signal acquisition analog frontend (Bio-AFE), which is part
of a chiplet further containing an ADC and an ultra-wideband
transmitter for digitization and wireless data transmission, an on-
chip clock-generation, and an LDO including reference. The chip
occupies an area of 3.64 mm2 in 180 -nm 1P6M CMOS. A flexible
recording of bio-signals is possible due to several bandwidth and
gain modes (0.2 Hz to 128/512/2048 Hz, and 19.9 dB to 53.1 dB,
respectively). Simultaneously, a high common-mode rejection
ratio of 81.6 dB, a differential input impedance of 216 MΩ, and a
low input-referred noise ranging from 2.9 μVrms to 7.1 μVrms are
essential for a recording of the low-amplitude bio-signals. The
(mode dependent) low power consumption of 0.37 μW to 1 μW of
the Bio-AFE from a 1 V supply enables battery- or RF-powered
applications, which allows new possibilities of bio-signal based
tests while treating patients with neurological disorders.
UR - https://www.scopus.com/pages/publications/85179523362
U2 - 10.1109/NorCAS58970.2023.10305447
DO - 10.1109/NorCAS58970.2023.10305447
M3 - Conference proceedings
T3 - 2023 IEEE Nordic Circuits and Systems Conference, NorCAS 2023 - Proceedings
BT - 2023 IEEE Nordic Circuits and Systems Conference (NorCAS 2023)
A2 - Nurmi, Jari
A2 - Ellervee, Peeter
A2 - Koch, Peter
A2 - Moradi, Farshad
A2 - Shen, Ming
ER -