Microchip Technology

AT42QT2120-MMH  

Sensor and Detector Interfaces

AT42QT2120-MMH Description

The AT42QT2120-MMH is a high-performance touch sensor IC from Microchip Technology, designed to provide reliable and efficient touch detection in a variety of applications. This IC is part of the QTouch™ series, known for its robustness and versatility in touch interface solutions. The AT42QT2120-MMH supports up to 12 inputs, making it ideal for applications requiring multiple touch points such as buttons, sliders, and wheels. It operates within a wide voltage range of 1.8V to 5.5V, ensuring compatibility with various power supply configurations.

AT42QT2120-MMH Features

• Proximity Detection: The AT42QT2120-MMH features advanced proximity detection capabilities, allowing it to sense touch inputs without direct contact. This feature enhances user experience and reduces wear and tear on mechanical components.
• LED Driver Channels: With up to 10 LED driver channels, the IC can control multiple LEDs, providing visual feedback for touch inputs. This is particularly useful in applications where visual indicators are necessary for user interaction.
• Interface: The AT42QT2120-MMH utilizes an I2C interface, ensuring seamless communication with microcontrollers and other system components. This interface is widely used in the electronics industry, making integration straightforward.
• Mounting Type: Surface mount technology (SMT) is employed for the AT42QT2120-MMH, allowing for compact and reliable integration into modern electronic designs. The 20VQFN package is both space-efficient and thermally effective.
• Compliance and Status: The IC is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. It also has a Moisture Sensitivity Level (MSL) of 3, allowing for up to 168 hours of exposure before assembly.
• Programmability: While the DigiKey programmability status is not verified, the AT42QT2120-MMH is designed to be highly configurable, allowing designers to tailor the touch detection parameters to their specific application needs.

AT42QT2120-MMH Applications

The AT42QT2120-MMH is well-suited for a wide range of applications where touch and proximity sensing are required. Some specific use cases include:

• Consumer Electronics: Ideal for devices such as smartphones, tablets, and smart home appliances where intuitive touch interfaces enhance user experience.
• Industrial Control Panels: Provides reliable touch sensing for control panels and interfaces in industrial environments, where durability and accuracy are paramount.
• Automotive Applications: Suitable for in-car control systems, such as touch-sensitive dashboards and infotainment systems, where proximity detection can improve safety and usability.
• Medical Devices: Enhances the user interface of medical equipment, such as touch-sensitive control panels for diagnostic machines and patient monitoring devices.
• Appliances: Enhances the user experience in household appliances like washing machines, refrigerators, and ovens, where touch controls are becoming increasingly popular.

Conclusion of AT42QT2120-MMH

The AT42QT2120-MMH from Microchip Technology stands out as a versatile and reliable touch sensor IC, offering a comprehensive set of features that make it suitable for a wide range of applications. Its ability to support multiple touch inputs, combined with advanced proximity detection and LED driver capabilities, makes it a superior choice for designers looking to integrate touch interfaces into their products. The wide operating voltage range, surface mount packaging, and industry-standard I2C interface further enhance its appeal. Whether for consumer electronics, industrial controls, automotive systems, medical devices, or household appliances, the AT42QT2120-MMH delivers robust performance and ease of integration, making it a valuable component in modern electronic designs.

AT42QT2120-MMH Documents

Download datasheets and manufacturer documentation for AT42QT2120-MMH

PCN Assembly/Origin :

Assembly Site 15/Feb/2021      

Datasheets :

AT42QT2120      

PCN Packaging :

Transfer to Microchip/Label/Pkg 5/Sep/2016       MBB/Label Chgs 16/Nov/2018      

PCN Other :

MSL3 to MSL1 05/Apr/2013      

Design Resources :

AT42QT2120 Development Tool Selector      

HTML Datasheet :

AT42QT2120      

PCN Design/Specification :

Marking Chgs 11/Jul/2017       Cancellation 02/Feb/2022      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH