An 8-10-bit, 1-40 MHz analog signal processor with configurable performance for electronic imaging applications

An 8-10-b, 1-40-MHz analog signal processing ASIC that performs correlated double sampling (CDS), variable gain adjustment, periodic DC restoration, analog inversion, and analog multiplexing for black level insertion or synchronization is described. The ASIC has been developed in a configurable bipolar analog array for electronic imaging applications and is optimized for image sensor output rates of 1-40 MHz by varying only four process masks. In one configuration, suitable for HDTV camera systems, the ASIC operates at over 38 MHz with S/ N, linearity, and temperature stability of over 8 b. In a second configuration, suitable for many high quality electronic imaging applications, the ASIC operates at over 15 MHz with S/N, linearity, and temperature stability of over 10 b