Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers Power-on refreshed to EEMEM settings AD5254BRUZ1

Quad 64-/256-Position I2 C Nonvolatile Memory Digital Potentiometers

AD5253/AD5254

FEATURES

AD5253: quad 64-position resolution

AD5254: quad 256-position resolution

1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

Nonvolatile memory1 stores wiper settings w/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

I 2 C-compatible serial interface

Direct read/write access of RDAC2 and EEMEM registers

Predefined linear increment/decrement commands

Predefined ±6 dB step change commands

Synchronous or asynchronous quad-channel update

Wiper setting readback 4 MHz bandwidth—1 kΩ version

Single supply 2.7 V to 5.5 V

Dual supply ±2.25 V to ±2.75 V

2 slave address-decoding bits allow operation of 4 devices

100-year typical data retention, TA = 55°C

Operating temperature: –40°C to +105°C

TYPICAL PERFORMANCE CHARACTERISTICS