AD5144ABRUZ10

Overview

The AD5144ABRUZ10 is a quad-channel, nonvolatile digital potentiometer featuring 256 tap positions and an I2C interface. It offers a nominal resistance of 10 kΩ with a maximum tolerance of ±8% 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 support from 1.8 V to 5.5 V. Packaged in a 20-lead TSSOP, it provides wiper currents up to ±6 mA for the 10 kΩ variant.

Feature Summary

• Quad-channel architecture with 256-position resolution and nonvolatile EEPROM storage
• I2C serial interface with programmable address capability via ADDR pin
• Low resistor tolerance (±8%) and low temperature coefficient (35 ppm/°C)
• Wide bandwidth of 3 MHz and fast start-up time under 75 µs

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 current datasheet to confirm interface compatibility and package type. Ensure the selected variant matches the required communication protocol and resistance value for the target application design.

Selection Notes

Select this component for applications requiring precise analog signal adjustment with memory retention. The 10 kΩ resistance option supports higher wiper currents compared to the 100 kΩ variant. Verify that the system voltage range aligns with the specified 2.3 V to 5.5 V operating limits.

Part Context

This part belongs to the AD5124/AD5144/AD5144A family of digital potentiometers. The 'A' suffix typically denotes the I2C interface variant within the TSSOP package, distinguishing it from SPI-compatible models like the AD5144. All members share similar electrical characteristics and pinouts.

Replacement Considerations

Direct replacements include other AD5144A variants with different resistance values (e.g., AD5144BRUZ10). Cross-family substitutes like the AD5124 offer lower resolution (128 taps) but maintain similar functionality.

FAQ

What is the maximum continuous current for the 10 kΩ version?

The maximum continuous current for the A, B, and W terminals is ±6 mA when the nominal resistance is 10 kΩ.

How does the device handle data retention?

The device features nonvolatile EEPROM that retains data for up to 50 years at an endurance of 1,000 write cycles.

Is the logic supply voltage independent of the main supply?

Yes, the device supports an independent logic supply (VLOGIC) ranging from 1.8 V to VDD, allowing flexibility in interfacing with different logic levels.