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This paper presents an integrated analog-to-digital converter (ADC) based on pulse-width modulation (PWM) employing a clocked comparator. The converter parameter resolution, sample rate, input range, and supply voltage are adjustable and make the design useful for implantable or wearable multiple biopotential recording (ExG).
This paper presents a pulse-width-modulation (PWM) analog-to-digital converter for the transmission of signals across an all-digital isolation barrier of a bio-signal recording front-end. The system provides two ground-referenced channels and digital logic to generate a pseudodifferential as well as a common-mode output. Measured results of a prototype integrated circuit in TSMC 0.35 μm CMOS technology...
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