QT113H-ISG

Product Overview

Category

QT113H-ISG belongs to the category of integrated circuits (ICs).

Use

The QT113H-ISG IC is primarily used for touch sensing applications.

Characteristics

• Package: The QT113H-ISG comes in a small outline package (SOP).
• Essence: This IC is designed to detect touch or proximity by measuring changes in capacitance.
• Packaging/Quantity: The QT113H-ISG is typically packaged in reels and available in quantities suitable for mass production.

Specifications

The specifications of the QT113H-ISG are as follows:

• Supply Voltage: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Sensing Method: Capacitive
• Sensing Distance: Up to 25mm
• Output Type: Digital (I2C)
• Number of Channels: 3
• Power Consumption: Low power consumption, suitable for battery-powered devices

Detailed Pin Configuration

The pin configuration of the QT113H-ISG is as follows:

1. VDD: Supply voltage input
2. SDA: Serial data line for I2C communication
3. SCL: Serial clock line for I2C communication
4. IRQ: Interrupt output
5. GND: Ground connection
6. CH0: Channel 0 input
7. CH1: Channel 1 input
8. CH2: Channel 2 input

Functional Features

The QT113H-ISG offers the following functional features:

• Touch Sensing: It can detect touch or proximity by measuring changes in capacitance.
• Multi-Channel Capability: With three channels, it allows for simultaneous touch detection on multiple inputs.
• I2C Communication: The digital output is compatible with the I2C communication protocol, enabling easy integration with microcontrollers.
• Interrupt Output: The IRQ pin provides an interrupt signal to the host system when a touch event is detected.

Advantages and Disadvantages

Advantages

• High Sensitivity: The QT113H-ISG offers high sensitivity, allowing for reliable touch detection even at a distance.
• Low Power Consumption: It consumes minimal power, making it suitable for battery-powered devices.
• Easy Integration: The I2C interface simplifies integration with microcontrollers.
• Multi-Channel Capability: The ability to detect touch on multiple inputs simultaneously enhances user interaction.

Disadvantages

• Limited Sensing Distance: The maximum sensing distance of 25mm may not be sufficient for certain applications requiring longer range touch detection.
• External Components Required: Additional external components, such as capacitors and resistors, may be needed for proper operation.

Working Principles

The QT113H-ISG operates based on the principle of capacitive sensing. It measures changes in capacitance caused by the presence or proximity of a conductive object, such as a finger. When a touch event occurs, the capacitance between the touch pad and the sensor electrode changes, triggering the IC to generate a digital output signal. This signal can then be processed by a microcontroller to perform various actions.

Detailed Application Field Plans

The QT113H-ISG finds applications in various fields, including:

1. Consumer Electronics: Touch-sensitive buttons, sliders, and wheels in smartphones, tablets, remote controls, and gaming consoles.
2. Home Appliances: Touch-controlled panels for appliances like refrigerators, ovens, and washing machines.
3. Automotive: Capacitive touch interfaces for infotainment systems, climate control panels, and steering wheel controls.
4. Industrial Control: Human-machine interfaces (HMIs) for industrial equipment and machinery.
5. Medical Devices: Touch-sensitive controls for medical equipment and devices.

Detailed and Complete Alternative Models

1. QT114H-ISG: Similar to the QT113H-ISG, but with four channels instead of three.
2. QT100A: A single-channel touch sensor IC with similar functionality.
3. AT42QT1010: Another capacitive touch sensor IC with a different pin configuration.

These alternative models offer similar touch sensing capabilities and can be considered as alternatives to the QT113H-ISG based on specific application requirements.

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