GENERAL DESCRIPTION
The AD57801 is a true 18-bit, unbuffered voltage output digitalto-analog converter (DAC) that operates from a bipolar supply of up to 33 V. The AD5780 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. Both reference inputs are buffered on chip and external buffers are not required. The AD5780 offers a relative accuracy specification of ±1 LSB maximum range, and operation is guaranteed monotonic with a ±1 LSB differential nonlinearity (DNL) maximum range specification.

FEATURES
   True 18-bit voltage output DAC, ±1 LSB INL
   8 nV/√Hz output noise spectral density
   0.025 LSB long-term linearity error stability
   ±0.018 ppm/°C gain error temperature coefficient
   2.5 µs output voltage settling time
   3.5 nV-sec midscale glitch impulse
   Integrated precision reference buffers
   Operating temperature range: −40°C to +125°C
   4 mm × 5 mm LFCSP 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