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AD5544:  QUAD, CURRENT-OUTPUT, SERIAL-INPUT 16-/14-BIT DACS

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

The applied external reference input voltage (VREF) determines the full-scale output current. Integrated feedback resistors (RFB) provide temperature-tracking, full-scale voltage outputs when combined with an external ...More

AD5544:  QUAD, CURRENT-OUTPUT, SERIAL-INPUT 16-/14-BIT DACS

Product Description

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

The applied external reference input voltage (VREF) 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-on reset forces the output voltage to 0 at system turn-on. An MSB pin allows system reset assertion (RS) to force all registers to zero code when MSB = 0, or to half-scale code when MSB = 1.

The AD5544/AD5554 are packaged in the compact 28-lead SSOP.

Applications

  • Automatic test equipment
  • Instrumentation
  • Digitally controlled calibration

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TECHNICAL DOCUMENTATION

  • 16-bit resolution
    INL of ±1 LSB (B Grade)
    INL of ±2 LSB (A 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
  • Four separate, 4-quadrant multiplying reference inputs
  • See data sheet for additional features
  • Resolution (Bits): 16bit
  • DAC Update Rate: 500kSPS
  • DAC Settling Time: 0.9µs
  • # DAC Outputs: 4
  • DAC Type: Current Out
  • DAC Input Format: Ser,SPI
  • Output FSR: (-Vref),(Bip 2Vref),(Bip Vref),(Uni 2Vref),(Uni Vref),User Def. Range/Offset
  • Ref Int/Ext: Ext
  • Supply Vnom: Single(+5)
  • Pwr Diss: 1.25mW
  • Package: SOP

AD5544 Functional Block Diagram

AD5544 Functional Block Diagram
AD5544 Functional Block Diagram

Pricing, Packaging & Availability

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For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
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*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.