AD7578KNZ (ANALOG DEVICES)

The AD7578KNZ is a medium speed monolithic 12-bit CMOS Analog-to-digital Converter (ADC) which uses the successive approximation technique to provide a conversion time of 100µs. An auto-zero cycle occurs at the start of each conversion resulting in very low system offset voltages, typically less than 100µV. The device is designed for easy microprocessor interfacing using standard control signals, CS (decoded device address), RD (READ) and WR (WRITE). Conversion results are available in two bytes, 8LSBs and 4MSBs, over an 8-bit three state output bus. Either byte can be read first. Two converter busy flags are available to facilitate polling of the converter status.