QT113HA-ISG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Capacitive Touch Sensor
• Characteristics: High sensitivity, low power consumption
• Package: Surface Mount Technology (SMT)
• Essence: Detects touch on a capacitive surface
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Operating Voltage: 2.5V to 5.5V
• Current Consumption: 1.5µA (typical)
• Touch Sensitivity: Adjustable through external components
• Output Type: Digital (Active-Low)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The QT113HA-ISG has a total of 6 pins:

1. VDD: Power supply input (2.5V to 5.5V)
2. GND: Ground reference
3. OUT: Digital output indicating touch detection
4. SNS: Capacitive touch sensor input
5. THR: Threshold adjustment pin
6. NC: No connection (unused pin)

Functional Features

• High sensitivity: The QT113HA-ISG can detect even the slightest touch on a capacitive surface.
• Low power consumption: With a current consumption of only 1.5µA, it is suitable for battery-powered devices.
• Adjustable touch sensitivity: The threshold can be fine-tuned using an external component, allowing customization for different applications.
• Digital output: The active-low digital output provides a simple interface for integration with microcontrollers or other digital circuits.

Advantages and Disadvantages

Advantages

• High sensitivity enables accurate touch detection.
• Low power consumption prolongs battery life in portable devices.
• Adjustable touch sensitivity allows customization for specific requirements.
• Digital output simplifies integration with other circuits.

Disadvantages

• Requires external components for threshold adjustment.
• Limited to capacitive touch sensing applications.

Working Principles

The QT113HA-ISG utilizes capacitive sensing technology to detect touch. When a conductive object, such as a finger, approaches the capacitive touch sensor, it causes a change in the capacitance of the sensor. The IC detects this change and generates a digital output signal indicating touch detection.

Detailed Application Field Plans

The QT113HA-ISG is widely used in various applications that require touch sensing capabilities. Some potential application fields include:

1. Consumer Electronics: Touch-sensitive buttons, sliders, and touchpads in smartphones, tablets, remote controls, and home appliances.
2. Automotive: Capacitive touch controls for infotainment systems, climate control panels, and steering wheel controls.
3. Industrial Control: Human-machine interfaces (HMIs) for industrial equipment, control panels, and touch-sensitive switches.
4. Medical Devices: Touch-sensitive interfaces for medical equipment, such as patient monitors and diagnostic devices.
5. Home Automation: Capacitive touch switches and control panels for smart homes and IoT devices.

Detailed and Complete Alternative Models

• QT1106-ISG: 6-channel capacitive touch sensor IC with adjustable sensitivity and digital outputs.
• QT2220-ISG: 20-channel capacitive touch and proximity sensor IC with advanced features for complex touch applications.
• QT60168-ISG: Multi-function capacitive touch controller IC with integrated LED drivers for touch-sensitive lighting applications.

Note: This is not an exhaustive list, and there are several alternative models available from different manufacturers.

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