GENERAL DESCRIPTION
The AD7898 is a fast 12-bit ADC that operates from a single 5 V supply and is housed in a small 8-lead SOIC package. The part contains a successive approximation A/D converter, an on-chip track/hold amplifier, an on-chip clock, and a high speed serial interface.

FEATURES
   Fast 12-Bit ADC with 220 kSPS Throughput Rate
   8-Lead SOIC
   Single 5 V Supply Operation
   High Speed, Flexible, Serial Interface that
      Allows Interfacing to 3 V Processors
   On-Chip Track/Hold Amplifier
   Selection of Input Ranges
      ±10 V for AD7898-10
      ±2.5 V for AD7898-3
   High Input Impedance
   Low Power: 22.5 mW Max