Miniaturized and wireless near-infrared (NIR)-based neural recorders with optical powering
and data telemetry have been introduced as a promising approach for safe long-term …

This chapter presents an overview of the fundamentals and state of the art in non-invasive
biopotential recording instrumentation with a focus on micro-power integrated circuit design …

A continuous-time common-mode feedback (CMFB) circuit for low-power, area-constrained
neural recording amplifiers is proposed. The proposed CMFB circuit is compact; it can be …

This paper presents the trend of biopotential recording front-end channels developed from
the 1970s to the 2020s while describing a basic background on the front-end channel …

This article presents a transformer-first analog front-end (AFE) for ultra-low-power sensor
nodes. The proposed AFE employs a discrete-time transformer based on series–parallel …

This paper presents a discrete-time low-noise amplifier for miniaturized sensor nodes. Such
amplifier achieves a noise efficiency factor of 1.01 and a power efficiency factor of 1.63 …

Measuring the bioelectric signals is one of the key functions in wearable healthcare devices
and implantable medical devices. The use of wearable healthcare devices has made …

Noise efficiency factor (NEF) and power efficiency factor (PEF) are widely used as the figure
of merit to quantify the performance of biopotential recording front-ends. NEF and PEF are …

This paper presents a power-efficient and quickly-settled chopper-stabilized capacitively
coupled instrumentation amplifier (CCIA) for neural recording applications. To achieve a …

Neural amplifiers are desired to have ultra low power, low noise, low area, high input
impedance, band pass response and high CMRR. Capacitively coupled instrumentation …