QT110-DG

Product Overview

• Category: Electronic Component
• Use: Signal Processing
• Characteristics: High sensitivity, Low power consumption
• Package: DIP (Dual Inline Package)
• Essence: Capacitive Touch Sensor IC
• Packaging/Quantity: Tray, 100 pieces per tray

Specifications

• Operating Voltage: 2.0V - 5.5V
• Operating Current: 1.5μA (typical)
• Sensitivity Range: Adjustable from 8pF to 128pF
• Output Type: Digital (Active-Low)
• Response Time: <10ms
• Operating Temperature: -40°C to +85°C

Detailed Pin Configuration

The QT110-DG has a total of 14 pins arranged as follows:

┌───┬───┬───┬───┬───┐ │ 1 │ 2 │ 3 │ 4 │ 5 │ ├───┼───┼───┼───┼───┤ │ 6 │ 7 │ 8 │ 9 │10 │ ├───┼───┼───┼───┼───┤ │11 │12 │13 │14 │ │ └───┴───┴───┴───┴───┘

1. VDD: Power Supply
2. GND: Ground
3. SNS: Sense Input
4. OSC: Oscillator Output
5. OUT: Digital Output
6. NC: Not Connected
7. NC: Not Connected
8. NC: Not Connected
9. NC: Not Connected
10. NC: Not Connected
11. NC: Not Connected
12. NC: Not Connected
13. NC: Not Connected
14. NC: Not Connected

Functional Features

• Capacitive touch sensing with adjustable sensitivity
• Digital output indicating touch detection
• Low power consumption for battery-operated devices
• Wide operating voltage range for flexibility
• Fast response time for real-time applications

Advantages and Disadvantages

Advantages

• High sensitivity allows for reliable touch detection
• Low power consumption extends battery life
• Adjustable sensitivity range caters to different requirements
• Compact DIP package for easy integration into various designs

Disadvantages

• Limited number of pins restricts the number of external connections
• Requires proper grounding and shielding for optimal performance

Working Principles

The QT110-DG is a capacitive touch sensor IC that operates based on changes in capacitance when a conductive object, such as a finger, approaches or touches the sensor surface. It utilizes an internal oscillator to generate an electric field, which interacts with the external environment. When a conductive object disturbs this electric field, the capacitance changes, triggering the digital output signal.

Detailed Application Field Plans

The QT110-DG finds applications in various fields, including:

1. Consumer Electronics:

   • Touch-sensitive buttons and sliders in mobile phones and tablets
   • Control panels for home appliances and audio/video equipment

2. Automotive:

   • Touch-based controls for infotainment systems and climate control
   • Proximity sensors for automatic door handles and keyless entry systems

3. Industrial Automation:

   • Human-machine interfaces (HMIs) for industrial control panels
   • Touch-sensitive switches and controls in manufacturing equipment

4. Medical Devices:

   • Touch-based user interfaces for medical equipment and devices
   • Capacitive touch buttons for healthcare monitoring devices

Detailed and Complete Alternative Models

1. QT113-DG: Similar to QT110-DG, but with additional features like proximity detection.
2. QT100A: Single-channel capacitive touch sensor IC with adjustable sensitivity.
3. AT42QT1010: Capacitive touch controller IC with multiple channels and I2C interface.

These alternative models offer similar functionality and can be considered based on specific project requirements.

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