22.4 A 27.8μW Biopotential Amplifier Tolerant to 30V pp Common-Mode Interference for Two-Electrode ECG Recording in 0.18μm CMOS
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27 citations
Cites background or methods from "22.4 A 27.8μW Biopotential Amplifie..."
...[2] N....
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...A previous work [2] introduced an SC-based common-mode charge pump (CMCP) to tolerate CMI up to 30VPP....
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...Instead of using SC circuits with varying charging rate [2], this work uses actively cascoded current mirrors with an adaptive bias circuit [5] to provide a maximum CM current of 4....
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...It contains a 130dB-DR PPG readout, which is 11dB higher than the state of the art [1], to tolerate strong ambient light; an ECG AFE with a pseudo RightLeg-Drive (RLD) tolerant of >130VPP common-mode interference (CMI) from power-line coupling, which is 3× higher than the technique presented in [2]; and a BIOZ AFE for body-fat measurement using 1cm electrodes rather than the typically >10cm electrodes in conventional body-fat meters....
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...016mm, which is less than 10% of the area for CMCP in [2]....
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References
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"22.4 A 27.8μW Biopotential Amplifie..." refers background in this paper
...Although a CM cancellation path can increase the CM range, it is useful only when the CMI is smaller than the supply voltage [1,3]....
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41 citations
16 citations
"22.4 A 27.8μW Biopotential Amplifie..." refers background in this paper
...Although a CM cancellation path can increase the CM range, it is useful only when the CMI is smaller than the supply voltage [1,3]....
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12 citations
"22.4 A 27.8μW Biopotential Amplifie..." refers methods in this paper
...The component values used are typical parameters verified in [2,6]....
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