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AD5227:  64-POSITION DIGITAL UP/DOWN CONTROL POTENTIOMETER

The AD5227 is Analog Devices’ latest 64-step up/down control digital potentiometer1. This device performs the same electronic adjustment function as a 5 V potentiometer or variable resistor. Its simple 3-wire up/down interface allows manual switching or high speed digital control. The AD5227 presets to midscale at power-up. When CS is ...More

AD5227:  64-POSITION DIGITAL UP/DOWN CONTROL POTENTIOMETER

Product Description

The AD5227 is Analog Devices’ latest 64-step up/down control digital potentiometer1. This device performs the same electronic adjustment function as a 5 V potentiometer or variable resistor. Its simple 3-wire up/down interface allows manual switching or high speed digital control. The AD5227 presets to midscale at power-up. When CS is enabled, the devices changes step at every clock pulse. The direction is determined by the state of the U/D pin (see ). The interface is simple to activate by any host controller, discrete logic, or manually with a rotary encoder or pushbuttons. The AD5227’s 64-step resolution, small footprint, and simple interface enable it to replace mechanical potentiometers and trimmers with typically 6× improved resolution, solid-state reliability, and design layout flexibility, resulting in a considerable cost savings in end users’ systems.

The AD5227 is available in a compact thin SOT-23-8 (TSOT-8) Pb-free package. The part is guaranteed to operate over the automotive temperature range of −40°C to +105°C.

Users who consider EEMEM potentiometers should refer to some recommendations in the Applications section.

Applications

  • Mechanical potentiometer and trimmer replacements
  • LCD backlight, contrast, and brightness controls
  • Portable electronics level adjustment
  • Programmable power supply
  • Digital trimmer replacements
  • Automatic closed-loop control

    • 1RWA increments if RWB decrements and vice versa.

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    EVALUATION BOARDS & DEVELOPMENT KITS

    • 64-position digital potentiometer
    • 10 kΩ, 50 kΩ, 100 kΩ end-to-end terminal resistance
    • Simple up/down digital or manual configurable control
    • Midscale preset
    • Low potentiometer mode tempco = 10 ppm/°C
    • Low rheostat mode tempco = 35 ppm/°C
    • Ultralow power, IDD = 0.4 μA typ and 3 μA max
    • Fast adjustment time, ts = 1 μs
    • Chip select enable multiple device operation
    • Low operating voltage, 2.7 V to 5.5 V
    • Automotive temperature range, −40°C to +105°C
    • Compact thin SOT-23-8 (2.9 mm × 3 mm) Pb-free package
    • # Channels: 1
    • # Positions: 64
    • Memory Type: Volatile
    • Interface: Up/Down
    • Resistor Values (kOhms): 10, 50, 100
    • Voltage Range (V): +5.5V
    • Supply Current : 0.4µA
    • Temp. Range -40 °C to..: 105Deg
    • Absolute Tempco (ppm/°C): 35ppm/C
    • Package: TSOT-23

    AD5227 Functional Block Diagram

    AD5227 Functional Block Diagram
    AD5227 Functional Block Diagram

    OF NOTE ...

    For additional technical information, please email the Digital Potentiometer Group and supply your name, company, mailing address, telephone/fax numbers, email address, and a brief description of your application.

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    Model
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    Status
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    • Pre-Release: The model has not been released to general production, but samples may be available.
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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.

    RoHS Compliant
    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.