QT117L-DG

Product Overview

Category: Integrated Circuit (IC)

Use: QT117L-DG is a touch sensor IC used for capacitive touch sensing applications.

Characteristics: - High sensitivity and accuracy in touch detection - Low power consumption - Compact size - Easy integration into various electronic devices

Package: QT117L-DG is available in a small form factor package, such as a 16-pin QFN (Quad Flat No-leads) package.

Essence: The essence of QT117L-DG lies in its ability to accurately detect touch inputs through capacitive sensing technology.

Packaging/Quantity: QT117L-DG is typically sold in reels or trays containing a specified quantity of ICs, depending on the manufacturer's packaging standards.

Specifications

• Supply Voltage: 2.5V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Capacitive Touch Inputs: 7 channels
• Output Interface: I2C (Inter-Integrated Circuit)
• Sensing Method: Self-capacitance
• Sensitivity Adjustment: Programmable
• Power Consumption: Low power mode available

Detailed Pin Configuration

The pin configuration of QT117L-DG is as follows:

1. VDD: Supply voltage input
2. GND: Ground reference
3. SDA: Serial Data Line (I2C interface)
4. SCL: Serial Clock Line (I2C interface)
5. IRQ: Interrupt output
6. TCH0-TCH6: Touch channel inputs
7. NC: Not connected

Functional Features

• Touch Detection: QT117L-DG utilizes self-capacitance sensing method to detect touch inputs accurately.
• Sensitivity Adjustment: The sensitivity of the touch inputs can be adjusted programmatically, allowing customization based on specific requirements.
• Low Power Consumption: The IC offers a low power mode, ensuring efficient energy usage in battery-powered devices.
• Interrupt Output: An interrupt signal (IRQ) is provided to notify the host controller when a touch event is detected.

Advantages and Disadvantages

Advantages: - High sensitivity and accuracy in touch detection - Low power consumption - Compact size for easy integration into various electronic devices - Programmable sensitivity adjustment for customization

Disadvantages: - Limited number of touch channels (7 channels) - Requires an I2C interface for communication with the host controller

Working Principles

QT117L-DG operates based on the principle of capacitive sensing. When a conductive object, such as a finger, approaches or touches the touchpad connected to the IC, it causes a change in the capacitance at the corresponding touch channel. The IC detects this change and generates an output signal, indicating the presence of a touch event. The sensitivity of the touch detection can be adjusted programmatically.

Detailed Application Field Plans

QT117L-DG finds applications in various fields, including but not limited to: 1. Consumer Electronics: Touch-sensitive control panels, remote controls, gaming consoles, etc. 2. Automotive: Touch-enabled infotainment systems, steering wheel controls, interior lighting controls, etc. 3. Home Automation: Touch switches, touch dimmers, smart home control panels, etc. 4. Industrial Control: Human-machine interfaces, touch-based control panels for machinery, etc.

Detailed and Complete Alternative Models

1. QT118L-DG: Similar to QT117L-DG, but with additional touch channels for increased input capacity.
2. QT2160-LD: A higher-end touch sensor IC with advanced features like gesture recognition and proximity sensing.
3. AT42QT1010: An alternative touch sensor IC with a different package and pin configuration, suitable for simpler applications.

(Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's documentation for a complete list of alternatives.)

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