AT42QT5480-CU

Product Overview

• Category: Capacitive Touch Controller
• Use: This product is used for implementing touch sensing capabilities in various electronic devices.
• Characteristics: The AT42QT5480-CU offers high sensitivity and accuracy in touch detection, making it suitable for applications requiring precise touch input. It supports multiple touch points and provides robust noise immunity.
• Package: The AT42QT5480-CU comes in a compact QFN package, which ensures easy integration into electronic circuits.
• Essence: The essence of this product lies in its ability to enable touch-based interaction in electronic devices, enhancing user experience and functionality.
• Packaging/Quantity: The AT42QT5480-CU is typically packaged in reels containing 250 units.

Specifications

• Operating Voltage: 2.5V - 5.5V
• Number of Channels: 48
• Interface: I2C
• Touch Sensing Method: Mutual Capacitance
• Operating Temperature Range: -40°C to +85°C
• Power Consumption: Low power consumption, suitable for battery-powered devices
• Dimensions: 7mm x 7mm

Detailed Pin Configuration

The AT42QT5480-CU has the following pin configuration:

1. VDD: Power supply voltage
2. SDA: I2C data line
3. SCL: I2C clock line
4. IRQ: Interrupt request output
5. GND: Ground
6. TCH1-TCH48: Touch sensing channels

Functional Features

• Multi-touch Support: The AT42QT5480-CU can detect multiple touch points simultaneously, enabling advanced touch gestures.
• Noise Immunity: It incorporates advanced algorithms to filter out noise and interference, ensuring reliable touch detection even in noisy environments.
• Configurability: The controller offers various configuration options, allowing customization of sensitivity, touch thresholds, and other parameters to suit specific application requirements.
• Low Power Consumption: The AT42QT5480-CU is designed to minimize power consumption, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages: - High sensitivity and accuracy in touch detection - Multi-touch support - Robust noise immunity - Configurable parameters for customization - Low power consumption

Disadvantages: - Limited number of touch sensing channels (48)

Working Principles

The AT42QT5480-CU utilizes mutual capacitance 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 channels. These changes are then processed and interpreted as touch events by the controller.

Detailed Application Field Plans

The AT42QT5480-CU can be used in various applications, including but not limited to: - Consumer electronics (smartphones, tablets, remote controls) - Home automation systems (touch-based switches, control panels) - Automotive infotainment systems (touchscreens, steering wheel controls) - Industrial control panels and interfaces - Medical devices (touch-sensitive controls, user interfaces)

Detailed and Complete Alternative Models

1. AT42QT1010: Single-channel capacitive touch controller with I2C interface.
2. AT42QT2160: 16-channel capacitive touch controller with SPI interface.
3. AT42QT2120: 12-channel capacitive touch controller with I2C interface.
4. AT42QT1244: 24-channel capacitive touch controller with I2C interface.

These alternative models offer different channel configurations and interface options, providing flexibility for various application requirements.

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