资料介绍
ADI pcb MT-096
TUTORIAL
RFI Rectification Concepts
INPUT-STAGE RFI RECTIFICATION SENSITIVITY
A well-known but poorly understood phenomenon in analog integrated circuits is RFI
rectification, specifically as it occurs in op amps and in-amps. While amplifying very small
signals these devices can rectify large-amplitude, out-of-band HF signals, i.e., RFI. As a result,
dc errors appear at the output in addition to the desired signal. The undesired HF signals can
enter sensitive analog circuits by various means. Conductors leading into and out of the circuit
provide a path for interference coupling into a circuit.
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