A Single-Chip CDS and 16 Bit ADC CCD Video Processing ASIC
RUTHERFORD AND APPLETON LABS CHILTON (UNITED KINGDOM)
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We describe our development of a single-chip preamplifier, correlated double sampling, and 16-bit analogue-to-digital conversion video processing ASIC for CCD cameras for space applications. In designing electronics for the space environment, there are strong requirements to minimise size, mass, and power dissipation, and yet to work from just a small catalogue of high-reliability space-qualified components. These requirements place severe constraints upon the CCD camera designer, particularly in the area of the analogue video signal processing and digitisation electronics. The problems are amplified with the ever increasing aspirations of the space science community with the call for larger focal plane arrays of multiple CCDs, reading out at increasingly higher pixel readout rates, and through multiple CCD output amplifiers. We describe our development and the measured performance of a singlechip ASIC solution which is intended to meet the requirements of the CCD cameras in the suite of Solar remote-sensing instruments on NASAs STEREO mission.
- Electrical and Electronic Equipment