AD5706R

RECOMMENDED FOR NEW DESIGNS

4-Channel, 16-Bit, Current Output DAC with On-Chip Reference and SPI

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • 4-channel, 16-bit, current output DAC
  • Programmable output current ranges per channel
    • 50mA, 150mA, 200mA, and 300mA
  • Flexible 1.65V to 3.6V output supply voltages
  • Separate voltage supply per output channel
  • 0.3V maximum dropout voltage per channel
  • Internal switches to ground on IOUT pins
  • 2.5V on-chip voltage reference
  • 50MHz SPI interface
  • Load DAC, A/B toggle, and dither functions
  • Integrated analog diagnostic monitoring
  • Integrated thermal warning alert
  • 36-ball 2.55mm × 2.55mm WLCSP
  • 28-pin 4mm × 4mm LFCSP
  • Operating temperature: –40⁰C to +125⁰C

The AD5706R is a 4-channel, 16-bit resolution, low noise programmable current output, digital-to-analog converter (DAC). The device is ideal for applications such as photonics control and current-mode biasing.

The device features an integrated 2.5V voltage reference, along with load DAC, A/B toggle, and dither functions. An onboard multiplexer allows for monitoring of supply and output voltages, output currents, and the internal die temperature.

The AD5706R supports several programmable output current ranges, with a maximum of 300mA. With addressable pins, up to four devices can share a single SPI bus for communication.

Each DAC channel operates independently with its own positive power supply rail (PVDDx) that can range from 1.65V to 3.6V, optimizing both power efficiency and thermal performance. The device requires a 2.9V to 3.6V AVDD supply and is rated for operation across a wide temperature range from −40°C to +125°C.

APPLICATIONS

  • Photonics control
  • Optical communications
  • LED driver programmable current source
  • Current-mode biasing
AD5706R
4-Channel, 16-Bit, Current Output DAC with On-Chip Reference and SPI
AD5706R Functional Block Diagram AD5706R Pin Configuration AD5706R Pin Configuration AD5706R Chip Illustration
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Documentation

Data Sheet 1

User Guide 1

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Software Resources

Device Drivers 5

Tools & Simulations

IBIS Model 1

Evaluation Kits

eval board
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EVAL-AD5706R

Evaluation Board for the AD5706R

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Features and Benefits

  • Full featured evaluation board for the AD5706R
  • Various link options
  • PC control in conjunction with the EVAL-SDP-CK1Z board

Product Details

This user guide explains the operation of the EVAL-AD5706RARDZ for the AD5706R, enabling quick prototyping and reduced design time. The AD5706R operates on a 2.9V to 3.6V AVDD supply and includes a 2.5V internal low noise reference. Refer to the AD5706R data sheet for complete details when using the EVAL-AD5706R-ARDZ.

The EVAL-AD5706R-ARDZ features a power solution using the switching regulator to generate 3.8V from a +5V supply via USB-C or an external +5V to +12V supply. On-board regulators generate power for IOVDD, AVDD, and PVDD0/1/2/3. It also has an on-board 2.5V reference.

The evaluation board offers flexible interfaces, allowing the user to control it using common hardware platforms such as Arduino Shield connectors and the SPI PMOD connector.
EVAL-AD5706R
Evaluation Board for the AD5706R
EVAL-AD5706R-ARDZ Evaluation Board Angle View EVAL-AD5706R-ARDZ Evaluation Board Top View EVAL-AD5706R-ARDZ Evaluation Board Bottom View

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