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AD5242BRZ10-REEL7 PDF预览

AD5242BRZ10-REEL7

更新时间: 2024-11-23 12:27:15
品牌 Logo 应用领域
亚德诺 - ADI 转换器电位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 550K
描述
I2C-Compatible, 256-Position Digital Potentiometers

AD5242BRZ10-REEL7 数据手册

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I2C-Compatible,  
256-Position Digital Potentiometers  
AD5241/AD5242  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
A
W
B
O
O
2
1
1
1
1
256 positions  
10 kΩ, 100 kΩ, 1 MΩ  
SHDN  
Low temperature coefficient: 30 ppm/°C  
Internal power on midscale preset  
Single-supply 2.7 V to 5.5 V or dual-supply 2.7 V for ac or  
bipolar operation  
V
DD  
RDAC  
REGISTER 1  
REGISTER 2  
V
SS  
I2C-compatible interface with readback capability  
Extra programmable logic outputs  
Self-contained shutdown feature  
Extended temperature range: −40°C to +105°C  
ADDR  
DECODE  
8
AD5241  
SDA  
SCL  
GND  
PWR-ON  
RESET  
SERIAL INPUT REGISTER  
APPLICATIONS  
AD1  
AD0  
Multimedia, video, and audio  
Figure 1. AD5241 Functional Block Diagram  
Communications  
Mechanical potentiometer replacement  
Instrumentation: gain, offset adjustment  
Programmable voltage-to-current conversion  
Line impedance matching  
A
W
B
A
W
B
O
O
2
1
1
1
2
2
2
1
SHDN  
REGISTER  
V
DD  
RDAC  
REGISTER 1  
RDAC  
REGISTER 2  
V
SS  
ADDR  
DECODE  
AD5242  
8
1
SDA  
SCL  
GND  
PWR-ON  
RESET  
SERIAL INPUT REGISTER  
AD0  
AD1  
Figure 2. AD5242 Functional Block Diagram  
GENERAL DESCRIPTION  
The AD5241/AD5242 provide a single-/dual-channel, 256-  
position, digitally controlled variable resistor (VR) device. These  
devices perform the same electronic adjustment function as a  
potentiometer, trimmer, or variable resistor. Each VR offers a  
completely programmable value of resistance between the A  
terminal and the wiper, or the B terminal and the wiper. For the  
AD5242, the fixed A-to-B terminal resistance of 10 kΩ, 100 kΩ,  
or 1 MΩ has a 1% channel-to-channel matching tolerance. The  
nominal temperature coefficient of both parts is 30 ppm/°C.  
Wiper position programming defaults to midscale at system  
power on. When powered, the VR wiper position is programmed  
by an I2C®-compatible, 2-wire serial data interface. Both parts  
have two extra programmable logic outputs available that  
enable users to drive digital loads, logic gates, LED drivers, and  
analog switches in their system.  
The AD5241/AD5242 are available in surface-mount, 14-lead  
SOIC and 16-lead SOIC packages and, for ultracompact solutions,  
14-lead TSSOP and 16-lead TSSOP packages. All parts are  
guaranteed to operate over the extended temperature range of  
−40°C to +105°C.  
Rev. C  
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  
www.analog.com  
Fax: 781.461.3113 ©2001–2009 Analog Devices, Inc. All rights reserved.  
 

AD5242BRZ10-REEL7 替代型号

型号 品牌 替代类型 描述 数据表
AD5242BR10-REEL7 ADI

完全替代

I2C Compatible 256-Position Digital Potentiometers
AD5242BR10 ADI

完全替代

I2C Compatible 256-Position Digital Potentiometers
AD5242BRZ10 ADI

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I2C-Compatible, 256-Position Digital Potentiometers

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