AD5142WBRUZ10-RL7

Overview

The AD5142WBRUZ10-RL7 is a dual-channel, nonvolatile digital potentiometer featuring 256-position adjustment and an SPI-compatible interface. It offers a nominal resistance of 10 kΩ with ±8% tolerance and a low temperature coefficient of 35 ppm/°C. The device supports single or dual supply operation (2.3 V to 5.5 V) with an independent logic supply ranging from 1.8 V to 5.5 V. Key electrical characteristics include a maximum wiper current of ±6 mA, a bandwidth of 3 MHz, and fast start-up time under 75 µs. It operates over an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Dual-channel architecture with 256-tap resolution for precise analog signal adjustment
• Nonvolatile EEPROM memory retains wiper settings across power cycles
• SPI serial interface allows for programmable resistance and read-back capabilities
• Linear gain setting mode enables independent programming of string resistors

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 'W' against the manufacturer's official documentation to confirm package type and automotive qualification status, as standard variants may differ in physical dimensions or reliability ratings. Ensure compatibility with the required PCB footprint and thermal management strategy for the selected package option.

Selection Notes

Select this component when dual-channel nonvolatile adjustment with high precision is required. The 10 kΩ resistance value suits applications needing moderate current handling up to ±6 mA. Verify that the system voltage falls within the 2.3 V to 5.5 V range and that the SPI interface timing meets the microcontroller's requirements for SYNC and SCLK signals.

Part Context

This part belongs to the AD5122/AD5142 family of digital potentiometers. The AD5142 variant specifically provides 256 positions compared to the 128 positions of the AD5122. Both share similar electrical characteristics but differ in resolution. The family supports both LFCSP and TSSOP packages, offering flexibility for space-constrained designs.

Replacement Considerations

Direct replacements within the same family include the AD5142ABRUZ10-RL7 (I2C interface) or AD5142BCPZ100-RL7 (different package). Ensure interface compatibility (SPI vs. I2C) and pin-out alignment when substituting. Verify that the replacement maintains the required 256-position resolution and nonvolatile memory features.