chopperstabilized
Chopper-stabilized is a term used for electronic circuits and sensors that employ a chopping (modulation) technique to suppress offset voltages and low-frequency (1/f) noise. By periodically modulating the input with a square-wave switch, these devices achieve remarkable dc accuracy and stability, often in instrumentation amplifiers and electrometer-grade front ends.
Operation involves a periodic switch that multiplies the input by a square wave, shifting the signal spectrum
Advantages and trade-offs: The primary benefit is ultra-low input offset and low 1/f noise, enabling accurate
Applications: Chopper-stabilized circuits are used in precision instrumentation amplifiers, ADC front-ends, electrometers, thermocouple amplifiers, and DC