GENERAL DESCRIPTION
The AD7476/AD7477/AD74781 are, respectively, 12-bit, 10-bit, and 8-bit, high speed, low power, successive approximation ADCs. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. Each part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 6 MHz.

FEATURES
   Fast throughput rate: 1 MSPS
   Specified for VDD of 2.35 V to 5.25 V
   Low power
      3.6 mW at 1 MSPS with 3 V supplies
      15 mW at 1 MSPS with 5 V supplies
   Wide input bandwidth
      70 dB SNR at 100 kHz input frequency
   Flexible power/serial clock speed management
   No pipeline delays
   High speed serial interface
      SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible
   Standby mode: 1 μA maximum
   6-lead SOT-23 package

APPLICATIONS
   Battery-powered systems
      Personal digital assistants
      Medical instruments
      Mobile communications
   Instrumentation and control systems
   Data acquisition systems
   High speed modems
   Optical sensors