Overview

Features and Benefits

  • 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

Product Details

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

Product Lifecycle icon-recommended 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)

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

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