Datasheet > EVAL-AD5821EBZ1

EVAL-AD5821EBZ1

更新时间： 2024-11-30 03:33:11

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	505K
描述
120 mA, Current Sinking, 10-Bit, I2C DAC

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EVAL-AD5821EBZ1 数据手册

120 mA, Current Sinking,

10-Bit, I²C^®DAC

AD5821

FEATURES

INDUSTRIAL APPLICATIONS

120 mA current sink

Heater controls

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

Fan controls

Cooler (Peltier) controls

Solenoid controls

Valve controls

Linear actuator controls

Light controls

Current loop controls

Ultralow noise preamplifier

Power-down function

Power-on reset

GENERAL 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.

CONSUMER APPLICATIONS

Lens autofocus

Image stabilization

Optical zoom

Shutters

Iris/exposure

Neutral density (ND) filters

Lens covers

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.

Camera phones

Digital still cameras

Camera modules

Digital video cameras/camcorders

Camera-enabled devices

Security cameras

Web/PC 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

XSHUTDOWN

DGND

REFERENCE

POWER-ON

RESET

SDA

10-BIT

I C SERIAL

INTERFACE

SINK

CURRENT

SCL

OUTPUT DAC

SENSE

3.3Ω

AD5821

DGND

AGND

Figure 1.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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