AD5114

Single Channel, 32-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer
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Product Details

The AD5114 provides a nonvolatile solution for 32-position adjustment applications, offering guaranteed low resistor tolerance errors of ±8% and up to ±6 mA current density in the A, B, and W pins. The low resistor tolerance, low nominal temperature coefficient and high bandwidth simplify open-loop applications, as well as tolerance matching applications.

The new low wiper resistance feature minimizes the wiper resistance in the extremes of the resistor array to only 45 Ω, typical.

The wiper settings are controllable through an I2C-compatible digital interface that is also used to readback the wiper register and EEPROM content. Resistor tolerance is stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%.

The AD5115 is available in a 2 mm × 2 mm LFCSP package. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +125°C.

Applications

  • Mechanical potentiometer replacement
  • Portable electronics level adjustment
  • Audio volume control
  • Low resolution DAC
  • LCD panel brightness and contrast control
  • Programmable voltage to current conversion
  • Programmable filters, delays, time constants
  • Feedback resistor programmable power supply
  • Sensor calibration

Product Lifecycle

checked Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits

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EVAL-AD5110SDZ Circuit Diagram

Product Details

The Evaluation board for the AD5110 contains a SDP connection and software which allows the AD5110 to be controlled from an SDP board.

This evaluation board requires an SDP Controller board for connection to the PC. The SDP controller board connects to the PC via USB 2.0. The evaluation board will connect to the SDP controller board. The evaluation board cannot be connected directly to the PC. The evaluation software running on the PC will communicate with the evaluation board through the SDP Controller board.

The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CS1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.

Tools & Simulations

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Design Resources

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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.

AD5114 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

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Reviews

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Overview

2 Reviews
2 out of 2 (100%) customers recommend this product.
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Most Helpful Review

by Anonymous
While testing my SW, I would program the EEPROM from the SDAC value with one value (say X), load the SDAC from the EEPROM and see no change in the resistance value- perfect. Then I would change the SDAC to a different value (say Y) and load the EEPROM again. When I load the SDAC (which has Y in it) from the EEPROM (it is supposed to have Y in it), then the SDAC changes from Y to X. The was a surprise to me, because the SDAC had Y in it and the EEPROM was supposed to have Y in it as well. However, if I power cycle, then the SDAC will take on the value of Y from thje EEPROM. It seems that I was only able to change the value stored in the EEPROM 1 time during a powered up session, but on every power cycle the last thing I wrote to it before was loaded into the SDAC on power up. I don't know if this is expected behavior, but in my application, it doesn't matter. I'm just curious if I am doing something wrong of if this is normal part behavior.

Most Recent Review

by Anonymous
I liked the small footprint and the ease of use. I'm using it as a switch, so I can't speak to its resistance accuracy.

All Reviews

by Anonymous, 18 Feb 13
I'm very happy with the part.
I liked the small footprint and the ease of use. I'm using it as a switch, so I can't speak to its resistance accuracy.
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by Anonymous, 3 Feb 13
Works just like the datsheet says it should.
While testing my SW, I would program the EEPROM from the SDAC value with one value (say X), load the SDAC from the EEPROM and see no change in the resistance value- perfect. Then I would change the SDAC to a different value (say Y) and load the EEPROM again. When I load the SDAC (which has Y in it) from the EEPROM (it is supposed to have Y in it), then the SDAC changes from Y to X. The was a surprise to me, because the SDAC had Y in it and the EEPROM was supposed to have Y in it as well. However, if I power cycle, then the SDAC will take on the value of Y from thje EEPROM. It seems that I was only able to change the value stored in the EEPROM 1 time during a powered up session, but on every power cycle the last thing I wrote to it before was loaded into the SDAC on power up. I don't know if this is expected behavior, but in my application, it doesn't matter. I'm just curious if I am doing something wrong of if this is normal part behavior.
Was this Helpful?Helpful(0)

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
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.