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

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 ...More

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

Product Description

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

    • RESOURCES & TOOLS

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    • 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
    • Resolution (Bits): 10bit
    • DAC Update Rate: n/a
    • DAC Settling Time: 250µs
    • # DAC Outputs: 1
    • DAC Type: Current Out
    • DAC Input Format: I2C/Ser 2-wire,Ser
    • Output FSR: (3-120mA)
    • Ref Int/Ext: Int
    • Supply Vnom: Single(+2.7 to +5.5),Single(+2.7),Single(+3),Single(+3.3),Single(+5)
    • Pwr Diss: 20mW
    • Package: CSP

    Functional Block Diagram for AD5821

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    For detailed drawings and chemical composition please consult our  Package Site

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    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
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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.