AD5821A

更新时间： 2024-02-10 02:03:15

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	433K
描述
120 mA, Current Sinking, 10-Bit, I2C DAC

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AD5821A 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Contact Manufacturer	零件包装代码：	DIE
包装说明：	DIE,	针数：	0
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.78
Is Samacsys：	N	最大模拟输出电压：	5.5 V
最小模拟输出电压：	0.6 V	转换器类型：	D/A CONVERTER
输入位码：	BINARY	输入格式：	SERIAL
JESD-30 代码：	R-XUUC-N8	最大线性误差 (EL)：	0.3906%
位数：	10	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	DIE	封装形状：	RECTANGULAR
封装形式：	UNCASED CHIP	认证状态：	Not Qualified
标称安定时间 (tstl)：	250 µs	标称供电电压：	3.6 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子形式：	NO LEAD	端子位置：	UPPER
Base Number Matches：	1

AD5821A 数据手册

120 mA, Current Sinking,

10-Bit, I²C DAC

AD5821A

Industrial

FEATURES

Heater controls

Fan controls

Current sink: 120 mA

Available in 3 × 3 array WLCSP package

2-wire, (I²C-compatible) 1.8 V serial interface

10-bit resolution

Integrated current sense resistor

Power supply range: 2.7 V to 5.5 V

Guaranteed monotonic over all codes

Power down to 0.5 μA typical

Internal reference

Cooler (Peltier) controls

Solenoid controls

Valve controls

Linear actuator controls

Light controls

Current loop controls

GENERAL DESCRIPTION

Ultralow noise preamplifier

Power-down function

Power-on reset

The AD5821A is a single, 10-bit digital-to-analog converter

(DAC) with output current sinking capability of 120 mA. 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.

APPLICATIONS

Consumer

Lens autofocus

Image stabilization

Optical zoom

Shutters

Iris/exposure

Neutral density (ND) filters

Lens covers

The AD5821A incorporates a power-on reset circuit that

ensures 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 AD5821A 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 AD5821A is also suitable for many industrial applications,

such as controlling temperature, light, and movement without

derating over temperatures ranging from −30°C to +85°C.

The I²C 7-bit address for the AD5821A is 0xC.

FUNCTIONAL BLOCK DIAGRAM

XSHUTDOWN

DGND

REFERENCE

POWER-ON

RESET

SDA

SCL

10-BIT

I C SERIAL

INTERFACE

SINK

CURRENT

OUTPUT DAC

SENSE

3.3Ω

AD5821A

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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