ADC10154

ADC10154/ADC10158 10-Bit Plus Sign 4 µs ADCs with 4- or 8-Channel MUX, Track/Hold and Reference November 1999 ADC10154/ADC10158 10-Bit Plus Sign 4 µs ADCs with 4- or 8-Channel MUX, Track/Hold and Reference General Description The ADC10154 and ADC10158 are CMOS 10-bit plus sign successive approximation A/D converters with versatile analog input multiplexers, track/hold function and a 2.5V band-gap reference. The 4-channel or 8-channel multiplexers can be software configured for single-ended, differential or pseudo-differential modes of operation. The input track/hold is implemented using a capacitive array and sampled-data comparator. Resolution can be programmed to be 8-bit, 8-bit plus sign, 10-bit or 10-bit plus sign. Lower-resolution conversions can be performed faster. The variable resolution output data word is read in two bytes, and can be formatted left justified or right justified, high byte first. Features n 4- or 8- channel configurable multiplexer n Analog input track/hold function n 0V to 5V analog input range with single +5V power supply n −5V to +5V analog input voltage range with ± 5V supplies n Fully tested in unipolar (single +5V supply) and bipolar (dual ± 5V supplies) operation n Programmable resolution/speed and output data format n Ratiometric or Absolute voltage reference operation n No zero or full scale adjustment required n No missing codes over temperature n Easy microprocessor interface Applications n Process control n Instrumentation n Test equi...