In this paper, an asynchronous analog-to-information conversion system is introduced for
measuring the RR intervals of the electrocardiogram (ECG) signals. The system contains a …

This paper presents an ultra-low-power event-driven analog-to-digital converter (ADC) with
real-time QRS detection for wearable electrocardiogram (ECG) sensors in wireless body …

A continuous-time level-crossing analog-to-digital converter (LC-ADC) for biomedical
applications is presented. When compared to uniform-sampling (US) ADCs LC-ADCs …

This paper presents a clock-less 8b ADC in 130 nm CMOS technology, which uses signal-
dependent sampling rate and adaptive resolution through a time-varying comparison …

This article presents a 148-nW always-on wake-up system that drastically reduces the
system power consumption of Internet of Things (IoT) sensor nodes while oftentimes …

Feature extraction is an essential part of automatic speech recognition (ASR) to compress
raw speech data and enhance features, where conventional implementation methods based …

Asynchronous level crossing ADCs (LC ADC) saves power through non-uniform sampling
making it suitable for wearable devices. This paper presents a review of asynchronous level …

In this paper, a novel fixed-window level-crossing analog-to-digital converter (LCADC) is
proposed for the ECG monitoring application. The proposed circuit is implemented using …

This paper presents a clockless digital filter able to process inputs of different rates and
formats, synchronous or asynchronous, with no adjustment needed to handle each input …

The ambulatory monitoring in body-sensor networks (BSNs) usually uses wearable devices
to record the signals continuously for a long period of time. Such systems have to be …