QT117L-DG

Overview

The Microchip Technology QT117L-DG is a capacitive touch sensor integrated circuit belonging to the QProx family. It features an I2C-compatible serial interface for communication with host microcontrollers. The device supports multiple sensing channels and includes built-in proximity detection capabilities. It operates within a supply voltage range of 2.5V to 5.5V and is designed for surface-mount installation in an 8-lead SOIC package.

Feature Summary

• Capacitive touch sensing with integrated proximity detection
• I2C serial interface for simplified system integration
• Wide operating voltage range supporting various logic levels

Applications

• Consumer electronics touch interfaces
• Industrial control panels requiring proximity input
• White goods and appliance user interfaces

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature rating. Confirm current production status as component availability may vary. Ensure the selected variant matches the required pinout and electrical specifications for the target design.

Selection Notes

Compare channel count and sensitivity requirements against other members of the QProx family. Evaluate power consumption constraints relative to the 26µA typical supply current. Consider the 8-SOIC package dimensions for PCB layout compatibility and thermal management needs.

Part Context

This component is part of Microchip's dedicated capacitive touch sensor portfolio. It complements broader embedded controller solutions by providing specialized human-machine interaction inputs. The QProx series targets applications needing reliable touch and proximity functionality without complex external components.

Replacement Considerations

Consult official substitution guides for compatible QProx variants. Verify pin-to-pin compatibility before replacing existing designs. Check for updated versions within the same product family that may offer enhanced features or improved availability.