120 mA current sink
Available in 3 × 3 array WLCSP package
2-wire (I2C-compatible) 1.8 V serial interface
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
Ultralow noise preamplifier
Neutral density (ND) filters
Digital still cameras
Digital video cameras/camcorders
120 mA, Current Sinking,
10-Bit, I2C® DAC
Cooler (Peltier) controls
Linear actuator controls
Current loop controls
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,
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.
FUNCTIONAL BLOCK DIAGRAM
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