LC717A30UR-NH

Overview

The LC717A30UR-NH is a capacitance-to-digital converter LSI designed for touch and proximity sensing applications. It features eight capacitive sensing input channels, enabling high optimization for systems requiring multiple switches. The device utilizes mutual capacitance to detect minute capacitance changes down to the femtofarad level. It incorporates built-in noise suppression mechanisms to mitigate electromagnetic interference (EMI) effects and eliminates parasitic capacitance to enhance detector sensitivity. Operating within a voltage range of 2.6 V to 5.5 V, it supports I2C and SPI interfaces. The component is qualified under AEC-Q100 standards and functions between -40°C and +105°C in an SSOP-30 package.

Feature Summary

• High dynamic range capacitance digital conversion with femtofarad-level detection capability
• Integrated noise suppression mechanism for effective EMI mitigation
• Eight-channel architecture optimized for multi-switch systems
• Parasitic capacitance elimination to maximize sensor sensitivity

Applications

• Touch sensor controllers for automotive infotainment systems
• Proximity sensing modules in industrial control panels
• Multi-touch interface implementations in consumer electronics

Procurement Notes

Verify the specific suffix UR-NH against official onsemi documentation to confirm package type and moisture sensitivity classification. Ensure compatibility with existing PCB layouts regarding the SSOP-30 footprint. Confirm that the AEC-Q100 qualification meets the specific reliability requirements of the target application environment before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring eight independent capacitive sensing channels with robust EMI immunity. The wide operating temperature range and automotive qualification make it suitable for harsh environments. Ensure the host microcontroller supports the required I2C or SPI communication protocols for seamless integration into the system architecture.

Part Context

This part belongs to the LC717A30UJ series of capacitance-to-digital converters from onsemi. It is engineered to provide high-performance touch and proximity sensing solutions by integrating advanced signal processing capabilities into a single chip. The series focuses on delivering high sensitivity and noise resilience for modern interactive display and control applications.

Replacement Considerations

Check for direct pin-compatible alternatives within the LC717A30 family. Verify if upgraded suffixes offer improved packaging options or extended temperature ranges. Consult official obsolescence notices to ensure long-term supply availability for production runs.