AD5252BRU10-RL7

Digital Potentiometers Overview

The AD5252BRU10-RL7 is a dual-channel, I²C-compatible digital potentiometer featuring nonvolatile memory (EEMEM) and 256-position resolution per channel. It offers a nominal resistance of 10 kΩ with linear taper. The device operates on a single supply from 2.7 V to 5.5 V or a dual supply of ±2.25 V to ±2.75 V. Key electrical parameters include a typical power-on refresh time of 300 µs, an EEMEM rewrite time of 540 µs, and a maximum SCL clock frequency of 400 kHz. It provides direct read/write access to RDAC and EEMEM registers, supports wiper setting readback, and includes 12 extra bytes for user-defined data storage.

Digital Potentiometers Feature Summary

• Dual-channel architecture with 256 positions per RDAC and 10 kΩ nominal resistance.
• Nonvolatile EEMEM stores wiper settings and tolerance data, restoring automatically at power-on in 300 µs.
• I²C serial interface with two address bits allowing four devices on one bus.
• Patented resistance-tolerance storing function for precision applications.

Digital Potentiometers Applications

• Mechanical potentiometer replacement
• LCD panel VCOM adjustment
• White LED brightness adjustment

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix RL7 against current manufacturer documentation to confirm packaging type and availability status. Confirm RoHS compliance and lead-free specifications as these attributes may vary by production lot or revision. Cross-reference the full part number with official distributors to ensure compatibility with current inventory systems.

Digital Potentiometers Selection Notes

Select this component when a dual-channel digital solution with 10 kΩ resistance and 8-bit (256-step) resolution is required. Ensure the application voltage falls within the 2.7 V to 5.5 V single-supply range. Verify that the I²C bus speed does not exceed 400 kHz and that pull-up resistors are appropriately sized for the bus capacitance and desired rise/fall times.

Digital Potentiometers Part Context

This part belongs to the AD5251/AD5252 family of digitally controlled potentiometers. While the AD5251 offers 64 positions and only 50 kΩ options, the AD5252 provides higher resolution (256 positions) and multiple resistance values including 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ. Both share the same TSSOP-14 package and nonvolatile memory features.

Digital Potentiometers Replacement Considerations

Direct substitutes within the same family include other AD5252 variants with different resistance values (e.g., AD5252BRU1K, AD5252BRU50, AD5252BRU100) if the resistance value can be adjusted in the circuit design. Ensure the replacement maintains the 10 kΩ requirement if impedance matching is critical.

Digital Potentiometers FAQ

How long does it take for the AD5252BRU10-RL7 to restore its wiper settings after power-on?

The device typically restores wiper settings from the EEMEM to the RDAC registers within 300 µs after power-on.

What is the maximum SCL clock frequency supported by this device?

The maximum SCL clock frequency is 400 kHz, supporting standard I²C fast mode operation.

Can the AD5252BRU10-RL7 store user-defined data in addition to wiper settings?

Yes, it includes 12 extra bytes in the EEMEM (locations EEMEM4 to EEMEM15) for storing user-defined information such as lookup tables or system identification data.