AD5124BRUZ10

Overview

The AD5124BRUZ10 is a quad-channel, nonvolatile digital potentiometer featuring 128 tap positions and SPI interface. It offers 10 kΩ nominal resistance with ±8% tolerance and a 35 ppm/°C temperature coefficient. The device operates on a single supply from 2.3 V to 5.5 V or dual supplies of ±2.25 V to ±2.75 V, with an independent logic supply ranging from 1.8 V to 5.5 V. It supports wiper currents up to ±6 mA for the 10 kΩ variant and provides a wide bandwidth of 3 MHz. Packaged in a 20-lead TSSOP, it ensures data retention for 50 years and endures 1 million write cycles.

Feature Summary

• Quad-channel architecture with 128-position resolution and nonvolatile EEPROM storage
• SPI serial interface with independent logic supply (1.8 V to 5.5 V)
• Low temperature coefficient of 35 ppm/°C and maximum resistor tolerance of ±8%
• 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 official documentation to confirm package type and interface compatibility. Confirm that the selected component matches the required resistance value and channel count for the target application design.

Selection Notes

Select this model when four independent digital potentiometers are required within a single package. Ensure the system voltage falls within the 2.3 V to 5.5 V range and that the host controller supports the SPI protocol. Verify thermal requirements as the junction-to-ambient resistance is 105.92°C/W in still air.

Part Context

This component belongs to the AD5124/AD5144 family of nonvolatile digital potentiometers. While the AD5144 variants offer 256 positions, the AD5124 specifically provides 128 positions. The BRUZ10 designation indicates the B grade (±8% tolerance), 10 kΩ resistance, RUZ package (TSSOP), and 10 kΩ value.

Replacement Considerations

The AD5124BRUZ100 serves as a direct functional substitute offering 100 kΩ resistance instead of 10 kΩ. Other family members like the AD5144 provide higher resolution but may require software adjustments due to the increased number of taps.