AD5258BRMZ50

Digital Potentiometers Overview

The AD5258BRMZ50 is a single-channel, nonvolatile digital potentiometer featuring 64 adjustable positions and an I²C-compatible serial interface. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a typical positive supply current of 2 µA. The device incorporates a 10-lead MSOP package measuring 3 mm × 4.9 mm. Key electrical parameters include a nominal end-to-end resistance of 50 kΩ with ±30% tolerance, a total wiper resistance of 75 Ω (max 350 Ω), and a bandwidth of 190 kHz at the 50 kΩ setting. The internal EEPROM retains wiper settings for up to 100 years at 55°C.

Digital Potentiometers Feature Summary

• Nonvolatile memory maintains wiper settings with 100-year data retention
• I²C interface supports four devices per bus via programmable AD0/AD1 pins
• Separate VLOGIC pin allows logic level flexibility independent of analog supply
• Resistor tolerance stored in EEPROM for 0.1% accuracy readback

Digital Potentiometers Applications

• LCD panel VCOM adjustment
• LCD panel brightness and contrast control
• Programmable power supplies
• RF amplifier biasing
• Gain control and offset adjustment

Digital Potentiometers Procurement Notes

Verify the specific suffix '50' confirms the 50 kΩ resistance value during procurement. Confirm the package type is MSOP-10 and check for RoHS compliance status. Ensure the ordering part number matches the exact temperature grade and packaging format required for the production line.

Digital Potentiometers Selection Notes

Select this component when solid-state replacement for mechanical potentiometers is required in space-constrained designs. The 50 kΩ resistance value is suitable for moderate current applications. Consider the separate VLOGIC pin if the system logic voltage differs from the analog supply voltage. Verify that the 64-position resolution meets the application's precision requirements.

Digital Potentiometers Part Context

The AD5258 belongs to Analog Devices' family of nonvolatile digital potentiometers. The BRMZ50 variant specifically denotes the 50 kΩ resistance option within the 64-position series. This model shares architectural similarities with other AD525x parts but is distinguished by its specific resistance value and I²C communication protocol.

Digital Potentiometers Replacement Considerations

Direct replacements must maintain the 50 kΩ resistance, 64-position resolution, and I²C interface. Check pin compatibility for MSOP-10 packages. Ensure substitute components support the same voltage range and nonvolatile memory features if power-down retention is critical.