GENERAL DESCRIPTION
The AD7868 is a complete 12-bit I/O system containing a DAC and an ADC . The ADC is a successive approximation type with a track-and-hold amplifier having a combined throughput rate of 83 kHz. The DAC has an output buffer amplifier with a settling time of 3 µs to 12 bits. Temperature compensated 3 V buried Zener references provide precision references for the DAC and ADC.

FEATURES
   Complete 12-Bit I/O System, Comprising:
      12-Bit ADC with Track/Hold Amplifier
         83 kHz Throughout Rate
         72 dB SNR
      12-Bit DAC with Output Amplifier
         3 μs Settling Time
         72 dB SNR
      On-Chip Voltage Reference
   Operates from 65 V Supplies
   Low Power – 130 mW typ
   Small 0.3" Wide DIP

APPLICATIONS
   Digital Signal Processing
   Speech Recognition and Synthesis
   Spectrum Analysis
   High Speed Modems
   DSP Servo Control