The ADS7803 is a monolithic CMOS 12-bit analogto-digital converter with internal sample/hold and fourchannel multiplexer. It is designed and tested for full dynamic performance with input signals to 50kHz. An autocalibration cycle guarantees a total unadjusted error within 3/4LSB over the specified temperature range, eliminating the need for offset or gain adjustment. The 5V single-supply requirements and standard CS, RD, and WR control signals make the part easy to use in microprocessor applications. Conversion results are available in two bytes through an 8-bit three-state output bus.