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AD5173BRMZ10-RL7 PDF预览

AD5173BRMZ10-RL7

更新时间: 2024-11-07 19:16:35
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管转换器电阻器
页数 文件大小 规格书
28页 826K
描述
256-Position, One-Time Programmable, Dual Channel, I<sup>2</sup>C Digital Potentiometer

AD5173BRMZ10-RL7 数据手册

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256-Position, One-Time Programmable,  
Dual-Channel, I2C Digital Potentiometers  
AD5172/AD5173  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAMS  
A1  
W1  
B1  
A2  
W2  
B2  
2-channel, 256-position potentiometers  
One-time programmable (OTP) set-and-forget resistance  
setting provides a low cost alternative to EEMEM  
Unlimited adjustments prior to OTP activation  
OTP overwrite allows dynamic adjustments with user-  
defined preset  
FUSE  
LINKS  
V
DD  
1
2
End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ  
Compact 10-lead MSOP: 3 mm × 4.9 mm  
Fast settling time: tS = 5 μs typical on power-up  
Full read/write of wiper register  
Power-on preset to midscale  
Extra package address decode pins: AD0 and AD1 (AD5173 )  
Single supply: 2.7 V to 5.5 V  
RDAC  
REGISTER 1  
RDAC  
REGISTER 2  
GND  
8
SDA  
SCL  
SERIAL INPUT  
REGISTER  
Figure 1. AD5172 Functional Block Diagram  
Low temperature coefficient: 35 ppm/°C  
Low power: IDD = 6 μA maximum  
W1  
B1  
W2  
B2  
Wide operating temperature: −40°C to +125°C  
APPLICATIONS  
FUSE  
LINKS  
Systems calibration  
Electronics level setting  
V
DD  
1
2
Mechanical trimmers replacement in new designs  
Permanent factory PCB setting  
Transducer adjustment of pressure, temperature, position,  
chemical, and optical sensors  
RDAC  
REGISTER 1  
RDAC  
REGISTER 2  
GND  
AD0  
AD1  
ADDRESS  
DECODE  
8
RF amplifier biasing  
Automotive electronics adjustment  
Gain control and offset adjustment  
SDA  
SCL  
SERIAL INPUT  
REGISTER  
Figure 2. AD5173 Functional Block Diagram  
GENERAL DESCRIPTION  
The AD5172/AD5173 are dual-channel, 256-position, one-time  
programmable (OTP) digital potentiometers1 that employ fuse  
link technology to achieve memory retention of resistance  
settings. OTP is a cost-effective alternative to EEMEM for users  
who do not need to program the digital potentiometer setting  
in memory more than once. These devices perform the same  
electronic adjustment function as mechanical potentiometers or  
variable resistors but with enhanced resolution, solid-state reliabil-  
ity, and superior low temperature coefficient performance.  
before permanently setting the resistance value. During OTP  
activation, a permanent blow fuse command freezes the wiper  
position (analogous to placing epoxy on a mechanical trimmer).  
Unlike traditional OTP digital potentiometers, the AD5172/  
AD5173 have a unique temporary OTP overwrite feature that  
allows for new adjustments even after a fuse is blown. However,  
the OTP setting is restored during subsequent power-up condi-  
tions. This allows users to treat these digital potentiometers as  
volatile potentiometers with a programmable preset.  
The AD5172/AD5173 are programmed using a 2-wire, I2C®-  
compatible digital interface. Unlimited adjustments are allowed  
1 The terms digital potentiometer, VR, and RDAC are used interchangeably.  
Rev. I  
Document Feedback  
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 ©2003–2013 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
 

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AD5173BRM10 ADI

完全替代

256-Position One-Time Programmable Dual-Channel I2C Digital Potentiometers
AD5173BRMZ10 ADI

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256-Position, One-Time Programmable, Dual Channel, I<sup>2</sup>C Digital Pote

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