GENERAL DESCRIPTION

The AD57901 is a single, 20-bit, unbuffered voltage output digitalto-analog converter (DAC) that operates from a bipolar supply of up to 33 V. The AD5790 accepts a positive reference input in the range of 5 V to VDD − 2.5 V and a negative reference input in the range of VSS + 2.5 V to 0 V. The AD5790 offers a relative accuracy specification of ±2 LSB maximum range, and operation is guaranteed monotonic with a −1 LSB to +3 LSB differential nonlinearity (DNL) specification.

FEATURES

Single 20-bit voltage output DAC, ±2 LSB INL

8 nV/√Hz output noise spectral density

0.1 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