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
