The ADC-HX and ADC-HZ Series are self-contained, highperformance, 12-bit A/D converters manufactured with thick and thin-film hybrid technology. They use the successive approximation conversion technique to achieve a 12-bit conversion in 20 and 8 microseconds, respectively. Five input voltage ranges are programmable by external pin connection. An internal buffer amplifier is also provided for applications in which 50 megohm input impedance is required.