GENERAL DESCRIPTION
The AD7091 is a 12-bit successive approximation register analog-to-digital converter (SAR ADC) that offers ultralow power consumption (typically 367 μA at 3 V and 1 MSPS) while achieving fast throughput rates (1 MSPS with a 50 MHz SCLK). The AD7091 operates from a single 2.09 V to 5.25 V power supply. The AD7091 also features an on-chip conversion clock and a high speed serial interface.

FEATURES
   Fast throughput rate of 1 MSPS
   Specified for VDD of 2.09 V to 5.25 V
   INL of ±1 LSB maximum
   Analog input range of 0 V to VDD
   Ultralow power
      367 μA typical at 3 V and 1 MSPS
      324 nA typical at 3 V in power-down mode
   Reference provided by VDD
   Flexible power/throughput rate management
   High speed serial interface: SPI®-/QSPI™-/MICROWIRE®-/
      DSP-compatible
   Busy indicator
   Power-down mode
   8-lead, 2 mm × 2 mm LFCSP package
   Temperature range: −40°C to +125°C
   APPLICATIONS
   Battery-powered systems
      Handheld meters
      Medical instruments
      Mobile communications
   Instrumentation and control systems
   Data acquisition systems
   Optical sensors
   Diagnostic/monitoring functions
   Energy harvesting