Title :
On-chip gain reconfigurable 1.2V 24μW chopping instrumentation amplifier with automatic resistor matching in 0.13μm CMOS
Author :
Michel, Fridolin ; Steyaert, Michiel
Author_Institution :
KU Leuven, Leuven, Belgium
Abstract :
Motivated by low-voltage, low-power and small-size requirements of biomedical and energy scavenging circuits, this work introduces a fully integrated instrumentation amplifier (IA) running at 1.2V with a power consumption of only 24μW. A direct current feedback structure (DCFB) with rail-to-rail output swing is proposed along with a precision reference generation for on-chip resistor trimming. Thus, gain reconfiguration is achieved while guaranteeing low gain error over mismatch, process and temperature variations.
Keywords :
CMOS integrated circuits; amplification; choppers (circuits); instrumentation amplifiers; low-power electronics; resistors; semiconductor devices; CMOS process; automatic resistor matching; biomedical circuits; direct current feedback structure; energy scavenging circuits; fully integrated instrumentation amplifier; low gain error; on-chip gain reconfigurable chopping instrumentation amplifier; on-chip resistor trimming; power 24 muW; power consumption; precision reference generation; rail-to-rail output swing; voltage 1.2 V; Calibration; Instruments; Radiation detectors; Resistors; Solid state circuits; Switches; System-on-a-chip;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2012 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4673-0376-7
DOI :
10.1109/ISSCC.2012.6177055
