GENERAL DESCRIPTION
The AD57811 is a single 18-bit, unbuffered voltage output digitalto-analog converter (DAC) that operates from a bipolar supply of up to 33 V. The AD5781 accepts a positive reference input range of 5 V to VDD − 2.5 V and a negative reference input range of VSS + 2.5 V to 0 V. The AD5781 offers a relative accuracy specification of ±0.5 LSB maximum, and operation is guaranteed monotonic with a ±0.5 LSB differential nonlinearity (DNL) maximum specification.

FEATURES
   Single 18-bit DAC, ±0.5 LSB INL
   7.5 nV/√Hz noise spectral density
   0.05 LSB long-term linearity stability
   <0.05 ppm/°C temperature drift
   1 µs settling time
   1.4 nV-sec glitch impulse
   Operating temperature range: −40°C to +125°C
   20-lead TSSOP package
   Wide power supply range of up to ±16.5 V
   35 MHz Schmitt triggered digital interface
   1.8 V compatible digital interface

APPLICATIONS
   Medical instrumentation
   Test and measurement
   Industrial control
   Scientific and aerospace instrumentation
   Data acquisition systems
   Digital gain and offset adjustment
   Power supply control