Overview
Features and Benefits
- 256-position
- 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
- Computer software replaces microcontroller in factory programming applications
- Single supply: 2.7 V to 5.5 V
- Low temperature coefficient 45 ppm/°C
- Low power: IDD = 8 µA
- Wide operating temperature: –40°C to +125°C
- Evaluation board available
Product Details
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.
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.
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.
APPLICATIONS
- Mechanical potentiometer replacement in new designs
- LCD panel VCOM adjustment
- LCD panel brightness and contrast control
- Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
- RF amplifier biasing
- Automotive electronics adjustment
- Gain control and offset adjustment
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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AN-686: Implementing an I2C® Reset (Rev. 0)12/16/2003PDF44 kB
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UG-628: Evaluation Board for the AD5245 Digital Potentiometer6/2/2014PDF714 kB
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FAQs7/26/2017
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Choosing the Correct digiPOT for Your Application6/7/2013PDF311 K
Software & Systems Requirements
Device Drivers
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
PCN-PDN Information
Support & Discussions
AD5245 Discussions
RE: Can the Rg pins of the AD8421 be driven by the AD5245 digital potentiometer?
2 week(s) ago in Instrumentation Amplifiers
Sample & Buy
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.