AD5124BRUZ100

Overview

The AD5124BRUZ100 is a quad-channel, nonvolatile digital potentiometer featuring 128 tap positions and an SPI interface. It provides a nominal resistance of 100 kΩ with ±8% tolerance and a temperature coefficient of 35 ppm/°C. The device operates on a single supply from 2.3 V to 5.5 V or dual supplies up to ±2.75 V, with a logic supply range of 1.8 V to 5.5 V. Key electrical parameters include a maximum wiper current of ±6 mA (for 10 kΩ variants), a bandwidth of 3 MHz at 10 kΩ, and a fast startup time under 75 µs. It supports linear gain setting mode for accurate resistor matching.

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 ±8% maximum resistor tolerance
• High bandwidth of 3 MHz and fast startup time (< 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 variant matches the required resistance value and channel count for the target application design.

Selection Notes

Select this component when four independent digital potentiometers are required in 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. Consider the 100 kΩ resistance option if lower current draw is acceptable compared to the 10 kΩ alternative.

Part Context

This part belongs to the AD5124/AD5144 family of nonvolatile digital potentiometers. While the AD5144 offers 256 positions, the AD5124 provides 128 positions. Both share similar electrical characteristics but differ in resolution. The BRUZ100 suffix indicates the 100 kΩ resistance value and TSSOP-20 package configuration.

Replacement Considerations

The AD5144BRUZ100 serves as a direct pin-compatible replacement offering higher resolution (256 taps). For I2C interface requirements, the AD5123 series may be considered, though pinouts and control registers differ.