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AD5251 - Dual 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers

Datasheet Summary

Description

The AD5251/AD52521 are dual-channel, I2C, nonvolatile memory, digitally controlled potentiometers with 64/256 positions, respectively.

These devices perform the same electronic adjustment functions as mechanical potentiometers, trimmers, and variable resistors.

Features

  • AD5251: Dual 64-position resolution.
  • AD5252: Dual 256-position resolution.
  • AD5251: 50 kΩ.
  • AD5252: 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ.
  • Nonvolatile memory stores wiper setting w/write protection.
  • Power-on refreshed with EEMEM settings in 300 µs typ.
  • EEMEM rewrite time = 540 µs typ.
  • Resistance tolerance stored in nonvolatile memory.
  • 12 extra bytes in EEMEM for user-defined information.
  • I2C compatible serial interface.
  • Direct read/write access of RDAC.

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Datasheet preview – AD5251

Datasheet Details

Part number AD5251
Manufacturer Analog Devices
File Size 1.96 MB
Description Dual 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
Datasheet download datasheet AD5251 Datasheet
Additional preview pages of the AD5251 datasheet.

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Full PDF Text Transcription

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Data Sheet AD5251/AD5252 Dual 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers FEATURES ► AD5251: Dual 64-position resolution ► AD5252: Dual 256-position resolution ► AD5251: 50 kΩ ► AD5252: 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ ► Nonvolatile memory stores wiper setting w/write protection ► Power-on refreshed with EEMEM settings in 300 µs typ ► EEMEM rewrite time = 540 µs typ ► Resistance tolerance stored in nonvolatile memory ► 12 extra bytes in EEMEM for user-defined information ► I2C compatible serial interface ► Direct read/write access of RDAC and EEMEM registers ► Predefined linear increment/decrement commands ► Predefined ±6 dB step change commands ► Synchronous or asynchronous dual-channel update ► Wiper setting readback ► 4 MHz bandwidth—1 kΩ version ► Single supply 2.
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