Data Sheet AD5253/AD5254 Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers FEATURES FUNCTIONAL BLOCK DIAGRAM ► AD5253: quad 64-position resolution ► AD5254: quad 256-position resolution ► 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ ► Nonvolatile memory stores wiper settings with write protection ► Power-on refreshed to 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 asynchrono...

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