GENERAL DESCRIPTION

The AD7398/AD7399 family of quad, 12-bit/10-bit, voltage output digital-to-analog converters (DACs) is designed to operate from a single 3 V to 5 V supply or a dual ±5 V supply. Built with the Analog Devices, Inc. robust CBCMOS process, these monolithic DACs offer the user low cost with ease-of-use in single or dual-supply systems.

The applied external reference, VREF, determines the full-scale output voltage. Valid VREF values include VSS < VREF < VDD that result in a wide selection of full-scale outputs. For multiplying applications, ac inputs can be as large as ±5 VP.

FEATURES

  AD7398—12-bit resolution

  AD7399—10-bit resolution

  Programmable power shutdown

  Single (3 V to 5 V) or dual (±5 V) supply operation

  3-wire, serial SPI®-compatible interface

  Internal power-on reset

  Double buffered registers for simultaneous multichannel DAC update

  Four separate rail-to-rail reference inputs

  Thin profile, TSSOP-16 package available

  Low tempco: 1.5 ppm/°C

  Qualified for automotive applications

APPLICATIONS

  Automotive output voltage span

  Portable communications

  Digitally controlled calibration

  PC peripherals