GENERAL DESCRIPTION
The AD7291 is a 12-bit, high speed, low power, 8-channel, successive approximation ADC with an internal temperature sensor. The part operates from a single 3.3V power supply and features an I2C®-compatible interface. The track-and-hold amplifier which can handle input frequencies of up to 70MHz, and a multiplexer allows samples from eight channels.

FEATURES
   12 bit SAR ADC
      8 single-ended inputs
      Channel sequencer functionality
      Analog Input Range 0 to 2.5V
   12-bit temperature-to-digital converter
      Temperature sensor accuracy of ±2°C typical
   Temperature range: −40°C to +125°C
   Specified for VDD of 2.8 V to 3.6V
   Logic Voltage VDRIVE = 1.65V to 3.6V
   Power-down current : <10 µA
   Internal 2.5V Reference
   I2C-compatible serial interface supports
      standard & fast modes
   20-lead LFCSP