GENERAL DESCRIPTION

The AD5544/AD5554 quad, 16-/14-bit, current output, digitalto-analog converters (DACs) are designed to operate from a 2.7 V to 5.5 V supply range.

The applied external reference input voltage (VREFx) determines the full-scale output current. Integrated feedback resistors (RFB) provide temperature-tracking, full-scale voltage outputs when combined with an external I-to-V precision amplifier.

FEATURES

AD5544: 16-bit resolution

INL of ±1 LSB (B Grade)

AD5554: 14-bit resolution

INL of ±0.5 LSB (B Grade)

2 mA full-scale current ± 20, with VREF = ±10 V

0.9 μs settling time to ±0.1

12 MHz multiplying bandwidth

Midscale glitch of −1 nV-sec

Midscale or zero-scale reset

4 separate, 4-quadrant multiplying reference inputs

SPI-compatible, 3-wire interface

Double-buffered registers enable

Simultaneous multichannel change

Internal power-on reset

Temperature range: −40°C to +125°C

Compact 28-lead SSOP and 32-lead LFCSP

APPLICATIONS

Automatic test equipment

Instrumentation

Digitally controlled calibration