Patrick Fath, Harald Pretl,
"A 370-nW Quad-Channel Multi-Mode Bio-Signal Acquisition AFE with 2.9-?Vrms Input Noise"
: 2023 IEEE Nordic Circuits and Systems Conference (NorCAS 2023), 10-2023
Original Titel:
A 370-nW Quad-Channel Multi-Mode Bio-Signal Acquisition AFE with 2.9-?Vrms Input Noise
Sprache des Titels:
Englisch
Original Buchtitel:
2023 IEEE Nordic Circuits and Systems Conference (NorCAS 2023)
Original Kurzfassung:
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 M?, and a
low input-referred noise ranging from 2.9 ?Vrms to 7.1 ?Vrms are
essential for a recording of the low-amplitude bio-signals. The
(mode dependent) low power consumption of 0.37 ?W to 1 ?W 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.
Forschungs-