AD5142BRUZ100

Overview

The AD5142BRUZ100 is a dual-channel, nonvolatile digital potentiometer featuring 256 tap positions and an SPI interface. It offers 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 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 ±1.5 mA for the 100 kΩ variant, a bandwidth of 0.43 MHz, and a fast start-up time under 75 µs. It is housed in a 16-lead TSSOP package.

Feature Summary

• Dual-channel architecture with 256-position resolution and nonvolatile EEPROM storage
• SPI-compatible serial interface supporting independent logic supply (1.8 V to 5.5 V)
• Wide operating temperature range from −40°C to +125°C
• Linear gain setting mode via INDEP pin for independent string resistor programming

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 packaging type and tape/reel specifications. Ensure compatibility with the required voltage levels and interface timing constraints before integration into the design.

Selection Notes

Select this component for applications requiring precise analog signal adjustment with memory retention across power cycles. The 100 kΩ resistance value and 256 taps provide high resolution suitable for fine-tuning circuits. Verify that the system's SPI controller supports the required clock polarity and phase settings.

Part Context

This part belongs to the AD5122/AD5142 family of dual-channel digital potentiometers. While the AD5122 offers 128 positions, the AD5142 provides 256 positions for higher resolution. Both share similar electrical characteristics but differ in bit depth and nonlinearity specifications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.