Preamplifier and AD converter system for infrared focal plane arrays

Details Preamplifier and AD converter system for infrared focal plane arrays Preamplifier and AD converter system for infrared focal plane arrays

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000rsci...71.3921p&link_type=abstract

Review of Scientific Instruments, Volume 71, Issue 10, pp. 3921-3926 (2000).

Physics

1

Charge-Coupled Devices, Image Detectors, And Ir Detector Arrays, Imaging Detectors And Sensors, Amplifiers, Signal Processing Electronics

Scientific paper

We describe a precision preamplifier and analog-to-digital (AD) converter system for use with infrared focal plane arrays. The system uses a correlated double sampling integrated circuit which performs an analog subtraction of each full pixel level from its respective reset level prior to digitization by a 14-bit AD converter; this process is also known as ``delta-reset'' sampling. The system was designed to have good immunity to electrical noise interference and it has a measured dynamic range of better than 16384. A four channel version of this system is used to read out a 128×128 pixel Si:As array at a rate of 2.4 μs/pixel for the Long Wavelength InfraRed Camera a 7-13 μm camera designed and built for the Keck 10 meter telescope.

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