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AD5245BRJZ100-RL7 PDF预览

AD5245BRJZ100-RL7

更新时间： 2024-11-23 12:32:55
品牌 Logo 应用领域
亚德诺 - ADI 转换器数字电位计电阻器光电二极管
页数 文件大小 规格书
20页 687K
描述
256-Position I2C-Compatible Digital Potentiometer

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AD5245BRJZ100-RL7 数据手册

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256-Position I2C®-Compatible  
Digital Potentiometer  
AD5245  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
V
256-position  
DD  
End-to-end resistance 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ  
Compact SOT-23-8 (2.9 mm × 3 mm) package  
Fast settling time: tS = 5 µs typ on power-up  
Full read/write of wiper register  
Power-on preset to midscale  
Extra package address decode pin AD0  
A
SCL  
I2C INTERFACE  
SDA  
W
B
AD0  
WIPER  
REGISTER  
Computer software replaces µC in factory programming  
applications  
POR  
Single supply: 2.7 V to 5.5 V  
GND  
Low temperature coefficient 45 ppm/°C  
Low power: IDD = 8 µA  
Figure 1.  
Wide operating temperature: –40°C to +125°C  
Evaluation board available  
PIN CONFIGURATION  
APPLICATIONS  
Mechanical potentiometer replacement in new designs  
LCD panel VCOM adjustment  
1
2
3
4
W
8
7
6
5
A
V
AD5245  
TOP VIEW  
(Not to Scale)  
B
DD  
GND  
SCL  
AD0  
SDA  
LCD panel brightness and contrast control  
Transducer adjustment of pressure, temperature, position,  
chemical, and optical sensors  
Figure 2.  
RF amplifier biasing  
Automotive electronics adjustment  
Gain control and offset adjustment  
GENERAL DESCRIPTION  
The AD5245 provides a compact 2.9 mm × 3 mm packaged  
solution for 256-position adjustment applications. These  
devices perform the same electronic adjustment function as  
mechanical potentiometers or variable resistors, with enhanced  
resolution, solid-state reliability, and superior low temperature  
coefficient performance.  
Operating from a 2.7 V to 5.5 V power supply and consuming  
less than 8 µA allows usage in portable battery-operated  
applications.  
Note that the terms digital potentiometer, VR, and RDAC are  
used interchangeably.  
The wiper settings are controllable through an I2C-compatible  
digital interface, which can also be used to read back the wiper  
register content. AD0 can be used to place up to two devices on  
the same bus. Command bits are available to reset the wiper  
position to midscale or to shut down the device into a state of  
zero power consumption.  
Rev. B  
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  
©2006 Analog Devices, Inc. All rights reserved.  
 
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AD5245BRJZ100-RL7 替代型号

型号 品牌 替代类型 描述 数据表
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