Quad/ Current-Output Serial-Input 16-Bit/14-Bit DACs
Data Sheet
FEATURES
AD5544: 16-bit resolution INL of ±1 LSB (B Grade)
AD5554: 14-bit resolution INL of ±0.5 LSB (B Grade...
Description
Data Sheet
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
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.
A double-buffered serial data interface offers high speed, 3-wire, SPI- and microcontroller-compatible inputs using serial data in (SDI), a chip select (CS), and clock (CLK) signals. In addition, a serial data out pin (SDO) allows for daisy-chaining when multiple packages are used. A common, level-sensitive, load DAC strobe (LDAC) input allows the simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-o...
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