AD5170 - ADI

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

Part No

AD5170
Manufacturer

ADI
ChipWorker Part#

CW389438787
Description

256Position Two-Time Programmable I2C Digital Potentiometer
Documentation

Datasheet

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AD5170 Specifications

Attribute	Attribute Value

Part Number	AD5170
Manufacturer	ADI
ChipWorker Part#	CW389438787
Documentation	Datasheet
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Product Lifecycle Status	Unknown

Product Description

Product Details
The AD5170 is a 256-position, two-time programmable, digital potentiometer1 that employs fuse link technology, giving users two opportunities to permanently program the resistance setting. For users who do not need to program the digital potentiometer setting in memory more than once, the OTP feature is a cost-effective alternative to EEMEM. The AD5170 performs the same electronic adjustment function as mechanical potentiometers or variable resistors with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.
The AD5170 is programmed using a 2-wire, I2C®-compatible digital interface. Unlimited adjustments are allowed before permanently setting the resistance value, and there are two opportunities for permanent programming. 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 AD5170 has a unique temporary OTP overwrite feature that allows for new adjustments even after the fuse is blown. However, the OTP setting is restored during subsequent power-up conditions. This feature allows users to treat these digital potentiometers as volatile potentiometers with a programmable preset.
For applications that program the AD5170 at the factory, Analog Devices, Inc., offers device programming software that runs on Windows NT®, Windows® 2000, and Windows XP operating systems. This software effectively replaces any external I2C controllers, thus enhancing the time-to-market of the systems of the user.
**Applications**
* Systems calibration
* Electronics level setting
* Mechanical trimmers replacement in new designs
* Permanent factory PCB settings
* Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
* RF amplifier biasing
* Automotive electronics adjustments
* Gain control and offset adjustments
* The terms digital potentiometer, VR, and RDAC are used interchangeably.
Data Sheet, Rev. D, 7/08
### Features and Benefits
256-position digital potentiometer
Two-time programmable (TTP) set-and-forget resistance setting allows second-chance permanent programming
Unlimited adjustments prior to one-time programming (OTP) activation
OTP overwrite allows dynamic adjustments with user-defined preset
2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
end-to-end resistance
Compact 10-Lead MSOP
(3 mm × 4.9 mm) package
Fast settling time: tS = 5 μs typical in power-up
See Data Sheet for Additional Information

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