GENERAL DESCRIPTION
The AD79801 is a 16-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, it samples an analog input, IN+, between 0 V to REF with respect to a ground sense, IN−. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. Its power scales linearly with throughput.

FEATURES
   16-bit resolution with no missing codes
   Throughput: 1 MSPS
   Low power dissipation
      4 mW at 1 MSPS (VDD only)
      7 mW at 1 MSPS (total)
      70 µW at 10 kSPS
   INL: ±0.6 LSB typical, ±1.25 LSB maximum
   SINAD: 91.25 dB at 10 kHz
   THD: −110 dB at 10 kHz
   Pseudo differential analog input range
      0 V to VREF with VREF between 2.5 V to 5 V
   No pipeline delay
   Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V
      logic interface
   Proprietary serial interface
      SPI/QSPI/MICROWIRE™/DSP compatible
   Daisy-chain multiple ADCs and busy indicator
   10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP,
      same space as SOT-23
   Wide operating temperature range: −40°C to +125°C

APPLICATIONS
   Battery-powered equipment
   Communications
   Automatic test equipment (ATE)
   Data acquisitions
   Medical instruments