AD5124BRUZ10-RL7

Overview

The AD5124BRUZ10-RL7 is a quad-channel, nonvolatile digital potentiometer featuring 128 tap positions and an SPI interface. It utilizes a 20-lead TSSOP package with a nominal resistance of 10 kΩ and ±8% tolerance. 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 the 10 kΩ variant, a bandwidth of 3 MHz, and a low temperature coefficient of 35 ppm/°C. It supports linear gain setting mode and maintains data retention for 50 years.

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)
• High bandwidth (3 MHz) and fast startup time (< 75 µs)
• Linear gain setting mode for accurate resistor matching

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 the exact resistance value, interface type, and packaging format. Ensure compatibility with the required voltage levels and environmental operating conditions before integration into the design.

Selection Notes

Select this component when a quad-channel configuration with nonvolatile memory and SPI control is required. The 10 kΩ resistance option supports higher continuous currents compared to the 100 kΩ variant. Verify that the system logic voltage aligns with the 1.8 V to 5.5 V VLOGIC range.

Part Context

This part belongs to the AD5124 family of quad-channel, 128-position digital potentiometers. It shares architectural similarities with the AD5144 series but offers lower resolution. The BRUZ suffix indicates the 10 kΩ resistance value and TSSOP package configuration within the Analog Devices portfolio.

Replacement Considerations

The AD5124BRUZ100 serves as a direct functional substitute with identical pinout and specifications, differing only in the nominal resistance value (100 kΩ vs. 10 kΩ).

FAQ

What is the maximum continuous current allowed 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.

Does the device support dual-supply operation?

Yes, the AD5124 supports dual-supply operation with a range of ±2.25 V to ±2.75 V, enabling ground-referenced bipolar signal adjustment.

How does the linear gain setting mode function?

It allows independent programming of the resistance between the digital potentiometer terminals through the RAW and RWB string resistors, facilitating very accurate resistor matching.