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at42qt1010-touch-sensor

2 min read

Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

Details

The AT42QT1010 is a single-channel capacitive touch sensor IC from Microchip Technology. It’s a standalone momentary touch controller that requires no microcontroller - just power and touch detection. The device implements advanced filtering algorithms for robust operation in noisy environments.

Description

The AT42QT1010 is a one-channel capacitive touch sensor IC designed for easy integration into any application. It detects capacitive touch through various materials including glass, plastic, and other dielectrics. The device outputs a high signal when touch is detected and can drive an LED directly. It features configurable sensitivity and low-power modes.

Specifications

  • Type: Single-Channel Capacitive Touch Sensor
  • Output Type: Momentary (max ~60s on-time)
  • Supply Voltage: 1.8V to 5.5V
  • Operating Current: 17µA typical at 1.8V
  • Output Current: 20mA (can drive LED directly)
  • Package: SOIC-8 (8-pin Surface Mount)
  • Key Sensitivity: Configurable via capacitor (Cs)
  • Panel Thickness: Up to 12mm glass, 6mm plastic
  • Electrode Materials: Etched copper, silver, carbon, ITO
  • Operating Temperature: -40°C to +85°C
  • Features:
    • Advanced filtering for noise immunity
    • Configurable sensitivity
    • Low-power mode available
    • Direct LED drive capability
    • Settable via external capacitor
  • RoHS Compliant: Yes

Image

Microchip AT42QT1010 Touch Sensor

Applications

  • Touch-activated control panels
  • Consumer appliances with touch buttons
  • IoT devices with touch interface
  • Proximity sensor applications
  • Toys and interactive devices
  • Lighting controls
  • Mechanical switch/button replacement
  • Touch-sensitive user interfaces

Technical Notes

  • Maximum on-time is approximately 60 seconds; output goes low after this duration
  • Related devices: AT42QT1011 (no max on-time), AT42QT1012 (toggle functionality)
  • Commonly used in Adafruit breakout boards (product 1374)
  • Can sense touch through various materials without direct contact
  • Sensitivity adjustable via external capacitor
  • Very low power consumption makes it suitable for battery-powered applications

Tags

AT42QT1010, touch sensor, capacitive, Microchip, SOIC-8, low-power, momentary output, sensor IC

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