The detector signal processing chain of the ISO long wavelength spectrometer

Astronomy and Astrophysics – Astronomy

Scientific paper

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Infrared Astronomy, Infrared Detectors, Infrared Space Observatory (Iso), Infrared Spectrometers, Signal Processing, Spaceborne Astronomy, Amplifiers, Analog Circuits, Analog Data, Field Effect Transistors, Integrators

Scientific paper

This paper describes the analog signal processing chain for the detectors in the Long Wavelength Spectrometer (LWS) to be flown onboard the Infrared Space Observatory (ISO) satellite. The satellite, its mission, and the onboard experiments are briefly reviewed, and the configuration of the LWS Detector Subsystem is described. Two possible signal readout and amplification schemes, based on the Transimpedance Amplifier (TIA) and the Integrating Amplifier (IA) are discussed. The reasons for the choice of the IA for the LWS are outlined. The design of the complete LWS detector signal chain is presented.

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