The AT42QT1070-SSU is a single-channel capacitive touch sensor IC from Atmel (now Microchip Technology). It is designed for simple and robust touch sensing in a variety of applications. This device features a high signal-to-noise ratio and excellent sensitivity, making it ideal for detecting touch through various overlay materials. It implements a charge-transfer acquisition method.

Applications

• Simple touch switches
• Button replacements
• Consumer electronics
• Appliance control panels
• Lighting controls

Features

• Single-channel touch sensing
• High sensitivity
• Automatic calibration
• Low power consumption
• Robust noise immunity
• Output via digital pin

Benefits

• Easy integration into existing designs
• Reliable touch detection
• Stable performance over temperature and voltage variations
• Long battery life in portable applications
• Reduced false triggering in noisy environments

Additional Details

The AT42QT1070-SSU capacitive touch sensor is available in a small SOT23-6 package. It features automatic calibration, which compensates for environmental changes and ensures consistent performance. The IC consumes very little power, making it suitable for battery-powered devices. It is highly immune to noise, preventing false triggering from electrical interference. The device's simple digital output makes it easy to interface with microcontrollers. The AT42QT1070 is well-suited for replacing mechanical buttons with touch-sensitive alternatives. The SOT23-6 package is easy to solder. This device provides a simple, effective, and low-cost solution for touch sensing. The device is designed to operate over a wide voltage range, making it versatile for many different applications. Typical applications include consumer electronics, appliances, and industrial controls.