GENERAL DESCRIPTION
The AD7091R-5 is a 12-bit, multichannel, ultra low power, successive approximation analog-to-digital converter (ADC). The AD7091R-5 operates from a single 2.7 V to 5.25 V power supply and typically consumes only 24 µA at a 3 V supply in fast mode.

FEATURES
   I2C-compatible serial interface supports standard and
      fast modes
   Ultra low power: 90 µW typical at 3 V in fast mode
   Specified for VDD of 2.7 V to 5.25 V
   On-chip accurate 2.5 V reference, 5 ppm/°C typical drift
   4 single-ended analog input channels
   ALERT function
   BUSY function
   Autocycle mode
   Wide input bandwidth
      68 dB signal-to-noise ratio (SNR) typical at input
         frequency of 1 kHz
   Flexible power/throughput rate management
   No pipeline delays
   Power-down mode
      550 nA typical at VDD = 5.25 V
      435 nA typical at VDD = 3 V
   20-lead LFCSP and TSSOP packages
   Temperature range: −40°C to +125°C
  
APPLICATIONS
   Battery-powered systems
      Personal digital assistants
      Medical instruments
      Mobile communications
   Instrumentation and control systems
   Data acquisition systems
   Optical sensors
   Diagnostic/monitoring functions