AD5122WBRUZ10-RL7

Overview

The AD5122WBRUZ10-RL7 is a dual-channel, nonvolatile digital potentiometer featuring 128 tap positions and an SPI interface. It offers a nominal resistance of 10 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 a dual supply of ±2.25 V 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 fast start-up time under 75 µs. It is housed in a 16-lead TSSOP package and is qualified for automotive applications under AEC-Q100 standards.

Feature Summary

• Dual-channel architecture with 128-position resolution and nonvolatile EEPROM storage.
• SPI-compatible digital interface supporting independent logic supply (1.8 V to 5.5 V).
• AEC-Q100 qualified for automotive reliability requirements.
• Linear gain setting mode via INDEP pin for precise resistor matching at power-up.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel specifications. Confirm that the component meets the required AEC-Q100 qualification if intended for automotive use. Ensure the selected resistance value matches the application needs, as other variants exist within the family.

Selection Notes

Select this model for applications requiring dual-channel control with nonvolatile memory retention. The 10 kΩ resistance option supports up to ±6 mA wiper current, suitable for driving moderate loads. Verify compatibility with the system's SPI clock speeds and voltage levels, noting the separate VLOGIC supply requirement for digital inputs.

Part Context

This component belongs to the AD5122/AD5142 family of dual-channel, SPI, nonvolatile digital potentiometers. The AD5122 variant specifically provides 128 tap positions, whereas the AD5142 offers 256 taps. Both share similar electrical characteristics but differ in resolution and register width.

Replacement Considerations

The AD5122BRUZ10-RL7 is a parameter-equivalent alternative within the same family, differing primarily in packaging or lot traceability rather than functional specifications. Verify pinout and electrical limits before substitution.