Microchip Technology

QT140-DG  

Sensor and Detector Interfaces

QT140-DG Description

The QT140-DG is a highly versatile and reliable interface IC chip designed by Microchip Technology, specifically tailored for applications requiring proximity detection and button functionality. This chip is part of the esteemed QProx™ and QTouch™ series, known for their advanced touch and proximity sensing capabilities. The QT140-DG is designed to operate within a temperature range of 0°C to 70°C, making it suitable for a variety of environmental conditions. It features a through-hole mounting type, which ensures robust mechanical stability and ease of integration into various electronic systems.

QT140-DG Features

• Proximity Detection: The QT140-DG excels in proximity detection, enabling it to sense the presence of objects or fingers without direct contact. This feature is particularly advantageous in applications where touchless interaction is desired, such as in medical devices or industrial control panels.
• Multiple Inputs and LED Driver Channels: With the ability to support up to 4 inputs and up to 4 LED driver channels, the QT140-DG offers significant flexibility in designing user interfaces. This capability allows for the creation of multi-button systems with integrated LED feedback, enhancing user experience.
• Low Power Consumption: The QT140-DG operates with a supply current of only 2.5mA, making it an energy-efficient solution ideal for battery-powered devices. It also supports a wide supply voltage range of 3V to 5.5V, ensuring compatibility with various power sources.
• High Resolution: The chip boasts a 14-bit resolution, providing precise and accurate sensing capabilities. This high resolution ensures reliable detection and differentiation between various input levels, enhancing overall system performance.
• Compliance and Safety: The QT140-DG is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. It also has a moisture sensitivity level (MSL) of 1, indicating unlimited storage life and resistance to moisture, which is crucial for long-term reliability.
• Packaging and Availability: The chip is available in a tube package, facilitating easy handling and storage. Despite its obsolete product status, the QT140-DG remains a valuable component for existing systems and legacy designs.

QT140-DG Applications

The QT140-DG is well-suited for a wide range of applications due to its versatile features and robust performance. Some specific use cases include:

• Consumer Electronics: Ideal for creating intuitive user interfaces in devices such as remote controls, gaming consoles, and smart home appliances. The touch and proximity sensing capabilities enhance user interaction and provide a modern, sleek interface.
• Medical Devices: The non-contact sensing feature makes the QT140-DG suitable for medical equipment where hygiene and contamination prevention are critical. It can be used in devices such as touchless switches for operating rooms or patient monitoring systems.
• Industrial Control Panels: The QT140-DG can be integrated into industrial control panels to provide reliable and durable button interfaces. Its ability to support multiple inputs and LED feedback enhances the functionality and user experience of these panels.
• Automotive Applications: In automotive interiors, the QT140-DG can be used for touch-sensitive controls on dashboards, center consoles, and door panels. Its robustness and reliability ensure consistent performance in the demanding automotive environment.

Conclusion of QT140-DG

The QT140-DG stands out as a highly capable and reliable interface IC chip, offering a combination of advanced features and performance benefits. Its proximity detection, multiple input and LED driver channels, low power consumption, and high resolution make it a versatile solution for a variety of applications. Despite its obsolete status, the QT140-DG remains a valuable component for existing systems and legacy designs, ensuring continued support and compatibility. For engineers and designers seeking a robust and efficient touch and proximity sensing solution, the QT140-DG is an excellent choice.

QT140-DG Documents

Download datasheets and manufacturer documentation for QT140-DG

Datasheets :

QT140, 150      

PCN Packaging :

Transfer to Microchip/Label/Pkg 5/Sep/2016      

HTML Datasheet :

QT140, 150      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH