AD5259BRMZ10

Digital Potentiometers Overview

The AD5259BRMZ10 is a single-channel, nonvolatile digital potentiometer featuring 256 adjustable positions and an I²C-compatible interface. It utilizes a compact MSOP-10 package with dimensions of 3 mm × 4.9 mm × 1.1 mm. The device operates on a single supply voltage ranging from 3 V to 5.5 V. Key electrical parameters include a nominal end-to-end resistance (RAB) of 10 kΩ with ±30% tolerance, a maximum wiper resistance (RWB) of 350 Ω, and a typical power-on EEPROM restore time of less than 1 ms. The component supports a logic supply (VLOGIC) independent of the main supply, enabling flexible interface levels.

Digital Potentiometers Feature Summary

• Nonvolatile memory maintains wiper settings with 100-year typical data retention at 55°C.
• I²C-compatible interface with separate VLOGIC pin for increased flexibility.
• Resistance tolerance stored in EEPROM for 0.1% accuracy readback.
• Address pins AD0 and AD1 allow up to four devices on a single bus.

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 ordering suffix 'BRMZ10' against the manufacturer's current datasheet to confirm the package type (MSOP-10), temperature range (Industrial grade), and resistance value (10 kΩ). Ensure compatibility with the target I²C bus speed and voltage levels before procurement.

Digital Potentiometers Selection Notes

Select this component when solid-state replacement for mechanical potentiometers is required in space-constrained designs. The 256-position resolution and nonvolatile storage make it suitable for applications requiring precise, persistent calibration without external memory components.

Digital Potentiometers Part Context

The AD5259 belongs to Analog Devices' family of nonvolatile digital potentiometers. The BRMZ10 variant specifically denotes the Industrial temperature range (-40°C to +125°C), MSOP-10 packaging, and 10 kΩ nominal resistance. It serves as a direct electronic alternative to variable resistors in embedded systems.

Digital Potentiometers Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Verify pinout compatibility and I²C address configurations if replacing with other digital potentiometer models.

Digital Potentiometers FAQ

How is the resistance tolerance determined?

The resistance tolerance is stored in the EEPROM during factory production. Users can read back this value via the I²C interface to calculate the actual RAB with 0.1% accuracy.

What is the function of the VLOGIC pin?

The VLOGIC pin provides a separate logic power supply, allowing the digital interface to operate at a different voltage level than the main power supply (VDD), increasing interface flexibility.

How many devices can be connected to one I²C bus?

Up to four AD5259 packages can be connected to the same bus using the programmable Address Decode Pins AD0 and AD1.