QT117L-ISG

Product Overview

Category

QT117L-ISG belongs to the category of integrated circuits (ICs).

Use

The QT117L-ISG IC is primarily used for touch sensing applications.

Characteristics

• Package: The QT117L-ISG comes in a small outline integrated circuit (SOIC) package.
• Essence: This IC is designed to provide reliable and accurate touch sensing capabilities.
• Packaging/Quantity: The QT117L-ISG is typically packaged in reels, with each reel containing a specific quantity of ICs.

Specifications

The specifications of the QT117L-ISG are as follows:

• Supply Voltage Range: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Sensing Channels: 17
• Sensitivity Range: Adjustable
• Output Interface: I2C

Detailed Pin Configuration

The pin configuration of the QT117L-ISG is as follows:

1. VDD: Power supply input
2. SDA: Serial data input/output for I2C communication
3. SCL: Serial clock input for I2C communication
4. IRQ: Interrupt output
5. GND: Ground connection
6. CH0-CH16: Touch sensing channels

Functional Features

The QT117L-ISG offers the following functional features:

• Capacitive Touch Sensing: It enables touch detection through capacitive sensing technology.
• Adjustable Sensitivity: The sensitivity of each touch channel can be adjusted according to the application requirements.
• Low Power Consumption: The IC operates at low power, making it suitable for battery-powered devices.
• Interrupt Output: The IRQ pin provides an interrupt signal to the microcontroller when a touch event is detected.

Advantages and Disadvantages

Advantages: - Accurate and reliable touch sensing capabilities - Adjustable sensitivity for each touch channel - Low power consumption

Disadvantages: - Limited number of touch sensing channels (17 in this case) - Requires an external microcontroller for processing touch data

Working Principles

The QT117L-ISG operates based on the principle of capacitive touch sensing. It detects changes in capacitance caused by the presence or absence of a conductive object (such as a finger) near the touch sensing channels. When a touch event is detected, the IC generates an interrupt signal that can be used by a microcontroller to initiate further actions.

Detailed Application Field Plans

The QT117L-ISG can be applied in various fields, including but not limited to:

1. Consumer Electronics: Touch-sensitive control panels for appliances, remote controls, and gaming devices.
2. Automotive: Touch-based controls for infotainment systems, climate control panels, and steering wheel controls.
3. Industrial Automation: Human-machine interfaces (HMIs) for industrial equipment and control panels.
4. Medical Devices: Touch-sensitive interfaces for medical equipment and diagnostic devices.
5. Home Automation: Touch switches and control panels for smart home applications.

Detailed and Complete Alternative Models

Some alternative models to the QT117L-ISG include:

1. QT118B-ISG: Similar to QT117L-ISG with additional touch sensing channels.
2. AT42QT1010-TSHR: Capacitive touch sensor IC with a different pin configuration.
3. TTP223N-BSB: Single-channel touch detector IC with adjustable sensitivity.

These alternative models offer similar touch sensing capabilities but may have different specifications and pin configurations.

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