AD5252BRU50

Digital Potentiometers Overview

The AD5252BRU50 is a dual-channel, I2C-compatible digital potentiometer featuring 256-position resolution and nonvolatile memory. It provides two independent 50 kΩ resistors with wiper readback and ±6 dB step commands. The device operates on a single supply of 2.7 V to 5.5 V or a dual supply of ±2.25 V to ±2.75 V. It includes 12 extra bytes of user-defined EEPROM storage and stores resistance tolerance data. The component supports synchronous or asynchronous dual-channel updates and guarantees operation from –40°C to +105°C in a TSSOP-14 package.

Digital Potentiometers Feature Summary

• Dual-channel architecture with 256-step (8-bit) resolution per channel
• Nonvolatile memory retains wiper settings upon power loss with 300 µs typical restore time
• I2C serial interface supporting up to four devices via address decoding bits
• Patented resistance-tolerance storing function for precision applications

Digital Potentiometers Applications

• Mechanical potentiometer replacement
• LCD panel VCOM adjustment
• White LED brightness control
• RF base station power amplifier bias control
• Programmable gain and offset control

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout compatibility and temperature grade. Confirm that the required I2C pull-up resistors are included in the system design, as the SDA and SCL pins require external pull-ups for proper operation within the specified voltage range.

Digital Potentiometers Selection Notes

Select this part when a dual-channel digital solution with 50 kΩ end-to-end resistance is required. Ensure the host controller supports the standard I2C protocol and can handle the necessary write cycles, given the 100 k-cycle endurance limit. Verify that the system voltage falls within the 2.7 V to 5.5 V single-supply range or the ±2.75 V dual-supply range.

Digital Potentiometers Part Context

This component belongs to the AD5251/AD5252 family of digitally controlled potentiometers. While the AD5251 offers 64 positions, the AD5252 provides higher 256-position resolution. The BRU50 variant specifically denotes the 50 kΩ resistance option packaged in a 14-lead TSSOP format, distinguishing it from 1 kΩ, 10 kΩ, and 100 kΩ versions.

Digital Potentiometers Replacement Considerations

Direct replacements include other AD5252 variants with different resistance values (e.g., AD5252BRU1, AD5252BRU10, AD5252BRU100) if the circuit allows for adjusted scaling. Cross-family replacements like the AD8400 series may be considered but require verification of register compatibility and interface timing differences.