The MAX1144 accepts input signals of 0 to +6V (unipolar) or 6V (bipolar), while the MAX1145 accepts input signals of 0 to +2.048V (unipolar) or 2.048V (bipolar). Operating from a single 3.135V to 3.465V analog digital supply, powerdown modes reduce current consumption to 0.15mA at 10ksps and further reduce supply current to less than 20A slower data rates. A serial strobe output (SSTRB) allows direct connection to the TMS320 family digital-signal processors. The MAX1144/MAX1145 user can select either the internal clock or an external serial-interface clock for the ADC to perform analog-to-digital conversions. The MAX1144/MAX1145 feature internal calibration circuitry to correct linearity and offset errors. On-demand calibration allows the user to optimize performance. Three user-programmable logic outputs are provided for the control of an 8-channel mux or PGA. The MAX1144/MAX1145 are available in a 20-pin SSOP package and are fully specified over the -40C to +85C temperature range.