AD7322 is a 12-bit plus sign SAR ADC with true bipolar input ranges, software-selectable input ranges ±10 V, ±5 V, ±2.5 V, 0 V to +10 V, 1 MSPS throughput rate, two analog input channels with channel sequencer, single-ended, true differential and pseudo differential analog input capability, high analog input impedance, low power: 21 mW, full power signal bandwidth: 22 MHz, internal 2.5 V reference, high speed serial interface, power-down modes, 14-lead TSSOP package, iCMOS process technology.