AD5171 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD5171
Manufacturer

ADI
ChipWorker Part#

CW430810748
Description

64Position OTP Digital Potentiometer
Documentation

Datasheet

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AD5171 Specifications

Attribute	Attribute Value

Part Number	AD5171
Manufacturer	ADI
ChipWorker Part#	CW430810748
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD5171 is a 64-position, one-time programmable (OTP) digital potentiometer2 that uses fuse link technology to achieve the memory retention of the resistance setting function. OTP is a cost-effective alternative over the EEMEM approach for users who do not need to reprogram new memory settings in the digital potentiometer. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. The AD5171 is programmed using a 2-wire, I2C®-compatible digital control. It allows unlimited adjustments before permanently setting the resistance value. During the OTP activation, a permanent fuse blown command is sent after the final value is determined, freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer).
When this permanent setting is achieved, the value does not change regardless of supply variations or environmental stresses under normal operating conditions. To verify the success of permanent programming, Analog Devices, Inc., patterned the OTP validation such that the fuse status can be discerned from two validation bits in read mode.
For applications that program the AD5171 in factories, Analog Devices offers device programming software that operates across Windows® 95 to XP platforms, including Windows NT. This software application effectively replaces the need for external I2C controllers or host processors and, therefore, significantly reduces the development time of the users. An AD5171 evaluation kit includes the software, connector, and cable that can be converted for factory programming applications.
The AD5171 is available in a compact 8-lead SOT-23 package. All parts are guaranteed to operate over the automotive temper-ature range of −40°C to +125°C. Besides its unique OTP feature, the AD5171 lends itself well to other general-purpose digital potentiometer applications due to its temperature performance, small form factor, and low cost.
**Applications**
* System calibrations
* Electronics level settings
* Mechanical trimmers and potentiometer replacements
* Automotive electronics adjustments
* Gain control and offset adjustments
* Transducer circuit adjustments
* Programmable filters up to 1.5 MHz BW1
1Applies to 5 kΩ parts only.
2 The terms digital potentiometer and RDAC are used interchangeably.
Data Sheet, Rev. D, 7/08
### Features and Benefits
64 Position
One-time programmable (OTP) set-and-forget resistance setting
—low cost alternative over EEMEM
Unlimited adjustments prior to OTP activation
5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
end-to-end resistance
Low temperature coefficient:
35 ppm/°C in rheostat mode
Compact standard 8-lead SOT-23 package
See Data Sheet for Additional Information

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