Capacitive transimpedance amplifier with offset

摘要

Spectrometers including integrated capacitive detectors are described. An integrated capacitive detector integrates ion current from the collector (768) into a changing voltage. The detector includes a collector configured to receive ions in the spectrometer, a dielectric, and a plate arranged in an overlapping configuration with collector on an opposite side of the dielectric. The detector also includes an amplifier (764). A capacitive detector with offset (776) is described.

主权项

1. A spectrometer comprising:
a detector including: a collector configured to detect ions; a capacitive transimpedance amplifier coupled to the collector; and an offset circuit coupled to the capacitive transimpedance amplifier included in the detector.