Development of the Readout Controller for Infrared Array

Details Development of the Readout Controller for Infrared Array Development of the Readout Controller for Infrared Array

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pkas...21...67c&link_type=abstract

Publications of the Korean Astronomical Society (ISSN 1225-1534), Vol. 21, No. 2, p. 67 - 74 (2006)

Astronomy and Astrophysics

Astronomy

1

Near Infrared, Infrared Camera, Ir Array Controller

Scientific paper

We have developed a control electronics system for an infrared detector array of KASINICS (KASI Near Infrared Camera System), which is a new ground-based instrument of the Korea Astronomy and Space Science Institute (KASI). Equipped with a 512×512 InSb array (ALADDIN III Quadrant, manufactured by Raytheon) sensitive from 1 to 5 μm, KASINICS will be used at J, H, Ks, and L-bands. The controller consists of DSP (Digital Signal Processor), Bias, Clock, and Video boards which are installed on a single VME-bus backplane. TMS320C6713DSP, FPGA (Field Programmable Gate Array), and 384-MB SDRAM (Synchronous Dynamic Random Access Memory) are included in the DSP board. DSP board manages entire electronics system, generates digital clock patterns and communicates with a PC using USB 2.0 interface. The clock patterns are downloaded from a PC and stored on the FPGA. UART is used for the communication with peripherals. Video board has 4 channel ADC which converts video signal into 16-bit digital numbers. Two video boards are installed on the controller for ALADDIN array. The Bias board provides 16 dc bias voltages and the Clock board has 15 clock channels. We have also coded a DSP firmware and a test version of control software in C-language. The controller is flexible enough to operate a wide range of IR array and CCD. Operational tests of the controller have been successfully finished using a test ROIC (Read-Out Integrated Circuit).

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