AD5144ABRUZ100

Overview

The AD5144ABRUZ100 is a quad-channel, nonvolatile digital potentiometer featuring 256 tap positions and an I2C interface. It offers a nominal resistance of 100 kΩ with ±8% tolerance and a temperature coefficient of 35 ppm/°C. The device supports single or dual supply operation (VDD: 2.3 V to 5.5 V) and includes independent logic supply (VLOGIC: 1.8 V to 5.5 V). Key electrical parameters include a maximum wiper current of ±1.5 mA for the 100 kΩ variant, a bandwidth of 0.43 MHz, and low total harmonic distortion. It operates within an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Quad-channel architecture with 256-position resolution and nonvolatile EEPROM storage.
• I2C serial interface with programmable address support via ADDR pin.
• Linear gain setting mode for accurate resistor matching between terminals.
• Wide operating voltage range supporting single (2.3 V–5.5 V) and dual-supply configurations.

Applications

• Portable electronics level adjustment
• LCD panel brightness and contrast controls
• Programmable filters, delays, and time constants
• Programmable power supplies

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm interface type and package configuration. Ensure compatibility with system voltage levels and thermal requirements before integration. Cross-reference datasheet revisions to confirm parameter stability.

Selection Notes

Select this component for applications requiring four independent digital potentiometers with persistent settings. The 100 kΩ resistance value suits moderate impedance circuits. Verify that the I2C bus speed and address configuration meet system constraints. Consider the TSSOP-20 package dimensions for PCB layout planning.

Part Context

This part belongs to the AD5144A family, which provides quad-channel digital potentiometry with I2C connectivity. It shares architectural similarities with SPI-based variants like the AD5144 but utilizes a dedicated I2C pinout. The device integrates nonvolatile memory to retain wiper positions across power cycles.

Replacement Considerations

Direct substitutes within the same family include the AD5144BRUZ100, which offers identical electrical specifications but uses an SPI interface instead of I2C. Pinout differences must be accounted for during board redesign if switching interfaces.