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AD5821:  120 mA, Current Sinking, 10-Bit, I2C® DAC

Product Details


The AD5821 is a single 10-bit digital-to-analog converter with 120 mA output current sink capability. It features an internal reference and operates from a single 2.7 V to 5.5 V supply. The DAC is controlled via a 2-wire (I2C-compatible) serial interface that operates at clock rates up to 400 kHz.

The AD5821 incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V and remains there until a valid write takes place. It has a power-down feature that reduces the current consumption of the device to 1 µA maximum.

The AD5821 is designed for autofocus, image stabilization, and optical zoom applications in camera phones, digital still cameras, and camcorders.

The AD5821 also has many industrial applications, such as controlling temperature, light, and movement, over the range of −40°C to +85°C without derating.

The I2C address for the AD5821 is 0x18.

Consumer Applications

  • Lens autofocus
  • Image stabilization
  • Optical zoom
  • Shutters
  • Iris/exposure
  • Neutral density (ND) filters
  • Lens covers
  • Camera phones
  • Digital still cameras
  • Camera modules
  • Digital video cameras/camcorders
  • Camera-enabled devices
  • Security cameras
  • Web/PC cameras


Industrial Applications
  • Heater controls
  • Fan controls
  • Cooler (Peltier) controls
  • Solenoid controls
  • Valve controls
  • Linear actuator controls
  • Light controls
  • Current loop controls

FEATURES and BENEFITS

  • 120 mA current sink
  • Available in 3 × 3 array WLCSP package
  • 2-wire (I2C-compatible) 1.8 V serial interface
  • 10-bit resolution
  • Integrated current sense resistor
  • 2.7 V to 5.5 V power supply
  • Guaranteed monotonic over all codes
  • Power-down to 0.5 µA typical
  • Internal reference
  • Ultralow noise preamplifier
  • Power-down function
  • Power-on reset

Functional Block Diagram for AD5821

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD5398 Regulator Current Sink DAC Linux Driver Device Drivers HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

Price Table Help

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.

AD5821 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD5821EBZ Status: Last Time Buy Evaluation Board - Yes - Contact ADI

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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