AD5253BRU50-RL7

Digital Potentiometers Overview

The AD5253BRU50-RL7 is a quad-channel, I2C-compatible, nonvolatile memory digitally controlled potentiometer (DigiPot) from Analog Devices. It features 64-position resolution per channel and a nominal resistance of 50 kΩ. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V or a dual supply of ±2.25 V to ±2.75 V. It integrates EEPROM for storing wiper settings, which are automatically restored upon power-up in approximately 300 µs. The component includes 12 extra bytes of user-defined EEPROM storage and supports direct read/write access to RDAC and EEPROM registers via the I2C interface.

Digital Potentiometers Feature Summary

• Quad-channel architecture with 64-position digital resolution
• Nonvolatile EEPROM stores wiper settings with write protection
• I2C-compatible serial interface with 2 slave address bits
• Power-on refresh to stored settings in 300 µs typical

Digital Potentiometers Applications

• Mechanical potentiometer replacement
• Low resolution DAC replacement
• Programmable gain and offset control
• Sensor calibrations

Digital Potentiometers Procurement Notes

Verify the specific suffix RL7 corresponds to the reel packaging format as indicated by distributor listings. Confirm RoHS compliance status through official documentation, as some regional listings indicate non-compliance. Ensure the 50 kΩ resistance value matches the design requirements, as other resistance options exist within the AD5253 family.

Digital Potentiometers Selection Notes

Select this model for applications requiring four independent programmable resistors with persistent settings. The 50 kΩ value provides an 80 kHz bandwidth at midscale. Consider the AD5254 if higher 256-position resolution is needed, or the AD5251/AD5252 if fewer channels or different resolutions are sufficient. Verify that the TSSOP-20 package fits the PCB layout constraints.

Digital Potentiometers Part Context

This part belongs to the AD5253/AD5254 family of quad-channel DigiPots. The 'BR' indicates the industrial temperature range (-40°C to +105°C). The 'U' denotes the TSSOP-20 package. The '50' specifies the 50 kΩ nominal resistance. The 'RL7' suffix typically indicates tape and reel packaging for automated assembly.

Digital Potentiometers Replacement Considerations

Direct replacements include other AD5253 variants with different resistance values (e.g., AD5253BRU10 for 10 kΩ) or the AD5254 series for increased resolution. Cross-model substitution requires verifying pin compatibility and ensuring the new part's resolution and resistance meet circuit specifications.