AC-coupled front-end for biopotential measurements

Fully Integrated Biopotential Acquisition Analog Front-End IC

A biopotential acquisition analog front-end (AFE) integrated circuit (IC) is presented. The biopotential AFE includes a capacitively coupled chopper instrumentation amplifier (CCIA) to achieve low input referred noise (IRN) and to block unwanted DC potential signals. A DC servo loop (DSL) is designed to minimize the offset voltage in the chopper amplifier and low frequency respiration artifacts...

Design of an Analog Front-end for Ambulatory Biopotential Measurement Systems

Problems in Assessment of Novel Biopotential Front-End with Dry Electrode: A Brief Review

Developers of novel or improved front-end circuits for biopotential recordings using dry electrodes face the challenge of validating their design. Dry electrodes allow more user-friendly and pervasive patient-monitoring, but proof is required that new devices can perform biopotential recording with a quality at least comparable to existing medical devices. Aside from electrical safety requireme...

A comprehensive model for power line interference in biopotential measurements

Power line interference is a major problem in high-resolution biopotential measurements. Because interference coupling is mostly capacitive, shielding electrode leads and a high common-mode rejection ratio (CMRR) are quite effective in reducing power-line interference but do not completely eliminate it. We propose a model that includes both interference external to the measuring system and inte...

A Front End for CONSUL

CONSUL is a prototype constraint language for programming multiprocessors. In this paper we present a front end for CONSUL that makes the language easier to use than it originally was. The most important features of the front end are compact representation of constraints, type deenitions, functional use of relations, and the ability to split programs into multiple les.