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Product Detailed Parameters
- Description：SENSOR IC TOUCH/PROXMTY 1CH 8DIP
- Series：QProx™
- Mfr：Microchip Technology
- Package：Tube
- Type：Buttons
- Proximity Detection：Yes
- Number of Inputs：Up to 1
- LED Driver Channels：Up to 1
- Interface：-
- Resolution：14 b
- Voltage - Supply：2.5V ~ 5.5V
- Current - Supply：26µA
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The QT111-D is a single-channel capacitive touch sensor integrated circuit from the QProx family, manufactured by Microchip Technology. It operates within a supply voltage range of 2.5V to 5.5V and consumes 26µA of current. The device features a 14-bit resolution and supports both touch button and proximity detection functions. It is housed in an 8-SOIC package with a width of 3.90mm and is designed for surface mount installation. The component is rated for an operating temperature range of -40°C to 85°C.
Feature Summary
- Capacitive sensing technology enabling touch and proximity detection
- Single-channel input configuration for simplified integration
- Low power consumption suitable for battery-operated applications
Applications
- Consumer electronics touch interfaces
- Industrial control panels
- Appliance user interface buttons
Procurement Notes
Verify component status as the QT111 series may be discontinued or subject to last-time buy notices. Confirm RoHS compliance status, as specific suffixes may indicate non-compliant variants. Ensure the selected package matches the PCB footprint requirements for the 8-SOIC form factor before finalizing procurement orders.
Selection Notes
Select this component when a single-channel capacitive solution is required. Verify that the 2.5V to 5.5V supply range aligns with the system design. Consider the 8-SOIC package constraints for board space. Check if the 14-bit resolution meets the sensitivity requirements for the intended touch panel size and material.
Part Context
The QT111-D belongs to the QProx family of capacitive touch controllers. This series focuses on providing robust touch and proximity sensing capabilities in a compact form factor. It serves as a dedicated interface between mechanical buttons and digital systems, replacing traditional tactile switches in modern electronic designs.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Microchip Technology directly for current alternative components within the QProx portfolio or newer generations of capacitive touch sensors.
