Microchip Technology
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QT118H-IS
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QT118H-IS

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Capacitive touch sensor controller
  • Characteristics: High sensitivity, low power consumption
  • Package: 16-pin SOIC (Small Outline Integrated Circuit)
  • Essence: Enables touch sensing capabilities in electronic devices
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Operating Voltage: 2.4V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Sensing Channels: 8
  • Sensing Method: Mutual capacitance
  • Communication Interface: I2C (Inter-Integrated Circuit)
  • Sampling Rate: Up to 100 Hz
  • Power Consumption: <1µA in sleep mode, <200µA in active mode

Detailed Pin Configuration

The QT118H-IS has a total of 16 pins, each serving a specific purpose:

  1. VDD: Power supply voltage
  2. SDA: I2C serial data line
  3. SCL: I2C serial clock line
  4. IRQ: Interrupt request output
  5. GND: Ground
  6. CH0: Touch sensing channel 0
  7. CH1: Touch sensing channel 1
  8. CH2: Touch sensing channel 2
  9. CH3: Touch sensing channel 3
  10. CH4: Touch sensing channel 4
  11. CH5: Touch sensing channel 5
  12. CH6: Touch sensing channel 6
  13. CH7: Touch sensing channel 7
  14. NC: No connection
  15. NC: No connection
  16. NC: No connection

Functional Features

  • High sensitivity: The QT118H-IS offers excellent touch sensitivity, enabling accurate detection of even the slightest touch.
  • Low power consumption: With its efficient power management, the IC consumes minimal power, making it suitable for battery-powered devices.
  • I2C interface: The integrated I2C communication interface allows easy integration with microcontrollers and other digital devices.
  • 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 enables precise touch detection - Low power consumption prolongs battery life - I2C interface facilitates seamless integration - Interrupt output simplifies system design

Disadvantages: - Limited number of sensing channels (8) - Requires external components for touch sensing electrodes

Working Principles

The QT118H-IS utilizes mutual capacitance sensing technology to detect touch inputs. It measures changes in capacitance caused by the presence of a conductive object (such as a finger) near the touch sensing electrodes. By analyzing these capacitance variations, the IC determines if a touch event has occurred.

Detailed Application Field Plans

The QT118H-IS can be applied in various electronic devices that require touch sensing capabilities, including:

  1. Smartphones and tablets: Enables touch input on device screens.
  2. Home appliances: Incorporates touch controls in kitchen appliances, lighting systems, etc.
  3. Automotive industry: Integrates touch-sensitive buttons and panels in car interiors.
  4. Industrial control systems: Provides touch-based user interfaces for machinery and equipment.
  5. Consumer electronics: Enhances user interaction in gaming consoles, remote controls, etc.

Detailed and Complete Alternative Models

  1. QT117H-IS: Similar to QT118H-IS but with 7 sensing channels instead of 8.
  2. QT119H-IS: Expanded version with 9 sensing channels and additional features.
  3. QT112H-IS: Lower-cost alternative with reduced sensitivity and basic touch detection capabilities.

Note: This is not an exhaustive list, and there may be other alternative models available in the market.

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10 pirs û bersivên hevpar ên têkildarî sepana QT118H-IS di çareseriyên teknîkî de navnîş bikin

Sure! Here are 10 common questions and answers related to the application of QT118H-IS in technical solutions:

  1. Q: What is QT118H-IS? A: QT118H-IS is a high-performance integrated circuit (IC) designed for touch sensing applications.

  2. Q: What are the key features of QT118H-IS? A: The key features of QT118H-IS include high sensitivity, low power consumption, noise immunity, and support for multiple touch points.

  3. Q: What are some typical applications of QT118H-IS? A: QT118H-IS is commonly used in various technical solutions such as touchscreens, touchpads, industrial control panels, and home automation systems.

  4. Q: How does QT118H-IS achieve touch sensing? A: QT118H-IS uses capacitive sensing technology to detect changes in capacitance caused by touch, allowing it to accurately sense touch inputs.

  5. Q: Can QT118H-IS support multi-touch functionality? A: Yes, QT118H-IS supports multi-touch functionality, enabling it to detect and track multiple touch points simultaneously.

  6. Q: Is QT118H-IS compatible with different types of touch sensors? A: Yes, QT118H-IS is compatible with various touch sensor materials like glass, plastic, and even gloved hands.

  7. Q: Does QT118H-IS have any built-in noise filtering capabilities? A: Yes, QT118H-IS incorporates advanced noise filtering algorithms to minimize false touch detections caused by environmental noise.

  8. Q: Can QT118H-IS be easily integrated into existing systems? A: Yes, QT118H-IS provides a simple interface and can be easily integrated into microcontroller-based systems using standard communication protocols.

  9. Q: What is the power consumption of QT118H-IS? A: QT118H-IS has low power consumption, making it suitable for battery-powered devices and energy-efficient applications.

  10. Q: Are there any development tools or resources available for QT118H-IS? A: Yes, the manufacturer provides comprehensive documentation, application notes, and software libraries to assist developers in implementing QT118H-IS in their technical solutions.

Please note that these questions and answers are general and may vary depending on specific use cases and requirements.