The functionally complete, easy-to-use ADS-CCD1202 is a 12-bit, 2MHz Sampling A/D Converter whose performance and production testing have been optimized for use in CCD applications. This device delivers the lowest noise (600Vrms) and the best differential linearity error (0.45LSB maximum) of any commercially available 12-bit A/D in its speed class. It can respond to full scale input steps (from empty to full well) with less than a single count of error, and its input is immune to overvoltages that may occur due to blooming.