General Description
The MAX1246/MAX1247 12-bit data-acquisition systems combine a 4-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. The MAX1246 operates from a single +2.7V to +3.6V supply; the MAX1247 operates from a single +2.7V to +5.25V supply. Both devices’ analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.

FEATUREs
♦ 4-Channel Single-Ended or 2-Channel
   Differential Inputs
♦ Single-Supply Operation:
   +2.7V to +3.6V (MAX1246)
   +2.7V to +5.25V (MAX1247)
♦ Internal 2.5V Reference (MAX1246)
♦ Low Power: 1.2mA (133ksps, 3V supply)
                       54µA (1ksps, 3V supply)
                       1µA (power-down mode)
♦ SPI/QSPI/MICROWIRE/TMS320-Compatible
   4-Wire Serial Interface
♦ Software-Configurable Unipolar or Bipolar Inputs
♦ 16-Pin QSOP Package (same area as 8-pin SO)

APPLICATIONs
   Portable Data Logging
   Medical Instruments
   Pen Digitizers
   Data Acquisition
   Battery-Powered Instruments
   Process Control