AD5254BRUZ50 Description

The AD5254BRUZ50 is a  quad-channel, I²C®, nonvolatile memory, digitally controlled potentiometer with 64/256 positions, respectively.  

AD5254BRUZ50 Features

• 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

• I2C-compatible serial interface

• Direct read/write access to 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 the operation of 4 devices

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

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

AD5254BRUZ50 Applications

• Mechanical potentiometer replacement

• Low-resolution DAC replacement

• RGB LED backlight control

• White LED brightness adjustment

• RF base station power amp bias control

• Programmable gain and offset control

• Programmable attenuators

• Programmable voltage-to-current conversion

• Programmable power supply

• Programmable filters

• Sensor calibrations