AD5227

PRODUCTION

64-Position Digital Up/Down Control Potentiometer

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Overview

  • 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

The AD5227 is Analog Devices’ latest 64-step up/down control digital potentiometer. 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

AD5227
64-Position Digital Up/Down Control Potentiometer
AD5227 Functional Block Diagram AD5227 Pin Configuration
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Evaluation Kits

EVAL-AD5227

AD5227 Evaluation Board

Product Details

This page contains evaluation board documentation and ordering information for evaluating the AD5227.

EVAL-AD5227
AD5227 Evaluation Board

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