AD5142ABRUZ10

Overview

The AD5142ABRUZ10 is a dual-channel, nonvolatile digital potentiometer featuring 256 tap positions and an I²C-compatible interface. It offers a nominal resistance of 10 kΩ with a maximum tolerance of ±8% and a temperature coefficient of 35 ppm/°C. The device supports single or dual supply operation (VDD: 2.3 V to 5.5 V; VSS: 0 V to ±2.75 V) with an independent logic supply ranging from 1.8 V to 5.5 V. Key electrical characteristics include a 3 MHz bandwidth, ±6 mA wiper current capability, and fast startup time under 75 µs. Packaged in a 16-lead TSSOP, it ensures data retention for up to 50 years.

Feature Summary

• Dual-channel architecture with 256-position resolution and nonvolatile EEPROM storage
• I²C serial interface supporting standard (100 kHz) and fast mode (400 kHz)
• Linear gain setting mode via INDEP pin for accurate resistor matching
• Wide operating temperature range from −40°C to +125°C

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 suffix '10' confirms the 10 kΩ resistance value and 'RUZ' indicates the 16-lead TSSOP package. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ESD precautions are observed during handling due to sensitivity ratings.

Selection Notes

Select this component for applications requiring precise analog signal attenuation or gain control without mechanical wear. The 10 kΩ option suits moderate impedance circuits, while the 256 taps provide fine resolution. Verify that the system voltage stays within the 2.3 V to 5.5 V range and that I²C bus timing meets the specified setup and hold requirements.

Part Context

This part belongs to the AD5122A/AD5142A family of dual-channel digital potentiometers. It shares architectural similarities with the AD5122A but provides higher resolution (256 vs. 128 positions). It is distinct from quad-channel variants like the AD5144A and single-channel models such as the AD5141.

Replacement Considerations

Direct functional substitutes within the same family include the AD5142A (generic designation) or other AD5142A variants in different packages. Cross-family replacements require verification of pin compatibility and interface protocols.