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AD5231 Datasheet 1024-Position Digital Potentiometer

Manufacturer: Analog Devices

General Description

The AD5231 is a nonvolatile memory1, digitally controlled potentiometer2 with 1024-step resolution.

The device performs the same electronic adjustment function as a mechanical potentiometer with enhanced resolution, solid state reliability, and remote controllability.

The AD5231 has versatile programming that uses a standard 3-wire serial interface for 16 modes of operation and adjustment, including scratchpad programming, memory storing and restoring, increment/decrement, ±6 dB/step log taper adjustment, wiper setting readback, and extra EEMEM for user-defined information, such as memory data for other components, look-up table, or system identification information.

Overview

Data Sheet AD5231 Nonvolatile Memory, 1024-Position Digital Potentiometer.

Key Features

  • 1024-position resolution.
  • Nonvolatile memory maintains wiper setting.
  • Power-on refresh with EEMEM setting.
  • EEMEM restore time: 140 µs typ.
  • Full monotonic operation.
  • 10 kΩ, 50 kΩ, and 100 kΩ terminal resistance.
  • Permanent memory write protection.
  • Wiper setting readback.
  • Predefined linear increment/decrement instructions.
  • Predefined ±6 dB/step log taper increment/decrement instruc- tions.
  • SPI®-compatible serial interface.
  • 3 V to 5 V sing.