AD5398_15 Datasheet, PDF (1/17 Pages) Analog Devices – 120 mA, Current Sinking, 10-Bit, IC DAC

FEATURES
120 mA current sink
Available in 8-lead LFCSP package
Available in 3 x 3 array WLCSP package
2-wire (I²C®-compatible) 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
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 control
Fan control
Cooler (Peltier) control
Solenoid control
Valve control
Linear actuator control
Light control
Current loop control
120 mA, Current Sinking, 10-Bit, I²C^® DAC
AD5398
FUNCTIONAL BLOCK DIAGRAM
V_DD
6
AD5398
REFERENCE
POWER-ON
RESET
SDA 3
SCL 4
I²C SERIAL
INTERFACE
10-BIT
CURRENT
OUTPUT DAC
PD 1
5
DGND
R
2
DGND
Figure 1.
8 I_SINK
R_SENSE
3.3Ω
7
AGND
GENERAL DESCRIPTION
The AD5398 is a single 10-bit DAC 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 AD5398 incorporates a power-on reset circuit, which
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 AD5398 is designed for autofocus, image stabilization,
and optical zoom applications in camera phones, digital still
cameras, and camcorders.
The AD5398 also has many industrial applications, such as
controlling temperature, light, and movement, over the range
−40°C to +85°C without derating.
The I²C address range for the AD5398 is 0x18 to 0x1F
inclusive.
Rev. B
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