AD5398

FEATURES

120 mA current sink

Available in 8-lead LFCSP package

Available in 3 x 3 array WLCSP package

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

FUNCTIONAL BLOCK DIAGRAM

POWER-ON

RESET

3

SDA

7

AGND

2

DGND

6

4

SCL

1

PD

8

3.3

Ω

INTERFACE

10-BIT

CURRENT

OUTPUT DAC

REFERENCE

R

AD5398

5

DGND

Figure 1.

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

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.

inclusive.

Rev. B

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