General Description

The MAX194 is a 14-bit successive-approximation analog-to-digital converter (ADC) that combines high speed, high accuracy, low power consumption, and a 10µA shutdown mode. Internal calibration circuitry corrects linearity and offset errors to maintain the full rated performance over the operating temperature range without external adjustments. The capacitive-DAC architecture provides an inherent 85ksps track/hold function.

The MAX194, with an external reference (up to +5V), offers a unipolar (0V to VREF) or bipolar (-VREF to VREF) pin-selectable input range. Separate analog and digital supplies minimize digital-noise coupling.

Features

♦ True 14-Bit Accuracy: 1⁄2LSB INL

                                   82dB SINAD

♦ 9.4µs Conversion Time

♦ 10µA Shutdown Mode

♦ Built-In Track/Hold

♦ AC and DC Specified

♦ Unipolar (0V to VREF) and Bipolar (-VREF to VREF) Input Range

♦ Three-State Serial-Data Output

♦ Small 16-Pin DIP, SO, and Ceramic SB Packages

♦ Pin-Compatible 16-Bit Upgrade (MAX195)

Applications

  Portable Instruments     Audio

  Industrial Controls        Robotics

  Multiple Transducer       Medical Signal

  Measurements              Acquisition

  Vibrations Analysis        Digital Signal Processing