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Analog Devices Inc. AD5705R/AD5706R Digital-to-Analog Converters

Analog Devices AD5705R/AD5706R Digital-to-Analog Converters (DACs) are low noise, four-channel programmable current-output devices designed for photonics control, optical communications, LED driver current sourcing, and current-mode biasing. The DACs integrate a 2.5V on-chip reference, a load DAC, an A/B toggle, and dither functions, which simplify precision current-source design while supporting flexible SPI-based control.

Each DAC channel operates independently with its own positive supply rail, helping optimize power efficiency and thermal performance across multiple outputs. The AD5705R/AD5706R DACs also include programmable current ranges up to 300mA, analog diagnostic monitoring of supply and output conditions, and addressable pins that allow up to four devices to share a single SPI bus.

The ADI AD5705R is the 12-bit member of the family, while AD5706R provides 16-bit resolution for applications that need finer current-setting granularity. The devices are offered in 36-ball 2.55mm x 2.55mm WLCSP and 28-pin 4mm × 4mm LFCSP package options, and support operation from -40°C to +125°C.

Features

  • Four-channel current-output DAC family with low noise performance and SPI control
  • 50mA, 150mA, 200mA, and 300mA programmable output current ranges per channel
  • Flexible 1.65V to 3.6V output supply voltages with a 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 and thermal warning alert
  • Package options
    • 36-ball 2.55mm x 2.55mm WLCSP
    • 28-pin 4mm x 4mm LFCSP
  • AD5705R: 12-bit resolution
  • AD5706R: 16-bit resolution

Applications

  • Photonics control
  • Optical communications
  • LED driver programmable current sources
  • Current-mode biasing

Specifications

  • Shared operating conditions
    • AVDD supply range 2.9V to 3.6V
    • PVDDx supply range 1.65V to AVDD, with a separate rail per channel
    • IOVDD supply range 1.14V to 1.89V
    • Up to four devices can share one SPI bus using addressable pins
    • Operating temperature range from -40°C to +125°C
  • AD5705R
    • 12-bit, four-channel current-output DAC
    • Integral nonlinearity ±8LSB12 maximum
  • AD5706R
    • 16-bit, four-channel current-output DAC
    • Integral nonlinearity ±32LSB16 maximum
    • Output and monitoring functions
    • MUX output provides monitoring of supply voltages, output voltages, output currents, and die temperature
    • Internal reference output 2.5V nominal

Functional Block Diagram

Block Diagram - Analog Devices Inc. AD5705R/AD5706R Digital-to-Analog Converters
Published: 2026-06-09 | Updated: 2026-06-17