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AD5291:  SINGLE CHANNEL, 256-POSITION, 1% R-TOL, DIGITAL POTENTIOMETER WITH 20-TIMES PROGRAMMABLE MEMORY

The AD5291 and AD5292, members of the Analog Devices, Inc., digiPOT+™ family of potentiometers, are single-channel, 256-/1024-position digital potentiometers1 that combine industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package. These devices are capable of operat-ing across a wide voltage range, supporting both dual supply operation at ...More

AD5291:  Single Channel, 256-Position, 1% R-Tol, Digital Potentiometer with 20-Times Programmable Memory

Product Description

The AD5291 and AD5292, members of the Analog Devices, Inc., digiPOT+™ family of potentiometers, are single-channel, 256-/1024-position digital potentiometers1 that combine industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package. These devices are capable of operat-ing across a wide voltage range, supporting both dual supply operation at ±10.5 V to ±16.5 V and single supply operation at +21 V to +33 V, while ensuring less than 1% end-to-end resistor tolerance error and offering 20-time programmable (20-TP) memory.

The guaranteed industry leading low resistor tolerance error feature simplifies open-loop applications as well as precision calibration and tolerance matching applications.

The AD5291 and AD5292 device wiper settings are controllable through the SPI digital interface. Unlimited adjustments are allowed before programming the resistance value into the 20-TP memory. The AD5291 and AD5292 do not require any external voltage supply to facilitate fuse blow, and there are 20 opportunities for permanent programming. During 20-TP activation, a permanent blow fuse command freezes the wiper position (analogous to placing epoxy on a mechanical trimmer).

The AD5291 and AD5292 are available in a compact 14-lead TSSOP package. The part is guaranteed to operate over the extended industrial temperature range of −40°C to +105°C.

1The terms digital potentiometer and RDAC are used interchangeably.

Applications

  • Mechanical potentiometer replacement
  • Instrumentation: gain and offset adjustment
  • Programmable voltage-to-current conversion
  • Programmable filters, delays, and time constants
  • Programmable power supply
  • Low resolution DAC replacement
  • Sensor calibration

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EVALUATION BOARDS & DEVELOPMENT KITS

  • Single-channel, 256-/1024-position resolution
  • 20 kΩ, 50 kΩ, and 100 kΩ nominal resistance
  • Maximum ±1% nominal resistor tolerance error (resistor performance mode)
  • 20-times programmable wiper memory
  • Rheostat mode temperature coefficient: 35 ppm/°C
  • Voltage divider temperature coefficient: 5 ppm/°C
  • +9 V to +33 V single-supply operation
  • ±9 V to ±16.5 V dual-supply operation
  • See data sheet for additional features
  • # Channels: 1
  • # Positions: 256
  • Memory Type: Non-Volatile
  • Interface: SPI
  • Resistor Values (kOhms): 20
  • Bipolar Voltage Range (V): ±16.5V
  • Voltage Range (V): +33V
  • Supply Current : 2µA
  • Temp. Range -40 °C to..: 105Deg
  • Absolute Tempco (ppm/°C): 35ppm/C
  • Package: TSSOP

AD5291 Functional Block Diagram

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Model
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Status
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Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
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.

Production Availability
This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

View PCN
This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

*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.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.