CAP1166-1-CZC-TR

Product Overview

Category: Integrated Circuit (IC)

Use: The CAP1166-1-CZC-TR is a capacitive touch controller IC designed for various touch-sensitive applications. It provides a simple and cost-effective solution for implementing touch interfaces in electronic devices.

Characteristics: - Capacitive touch controller - Low power consumption - I2C interface for easy integration - Supports up to 16 touch channels - Built-in LED driver for backlight control - Noise filtering and automatic tuning capabilities

Package: The CAP1166-1-CZC-TR is available in a compact surface-mount package, making it suitable for space-constrained designs.

Essence: This IC enables touch sensing functionality in electronic devices by detecting changes in capacitance when a conductive object, such as a finger, comes into proximity with a touchpad or sensor.

Packaging/Quantity: The CAP1166-1-CZC-TR is typically supplied in tape and reel packaging, with a quantity of 3000 units per reel.

Specifications

• Supply Voltage: 1.8V - 3.6V
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Speed: Up to 400kHz
• Touch Channels: Up to 16
• LED Driver Current: Up to 25mA per channel

Detailed Pin Configuration

The CAP1166-1-CZC-TR features the following pin configuration:

1. VDD - Power supply voltage
2. SDA - I2C serial data input/output
3. SCL - I2C serial clock input
4. IRQ - Interrupt output
5. GND - Ground
6. LED1-LED16 - LED driver outputs
7. TCH1-TCH16 - Touch sensor inputs

Functional Features

• Capacitive touch sensing: The CAP1166-1-CZC-TR utilizes capacitive sensing technology to detect touch inputs on the connected touch sensors.
• LED backlight control: It includes a built-in LED driver that allows control of LED backlighting for visual feedback or illumination purposes.
• Noise filtering: The IC incorporates noise filtering mechanisms to ensure reliable touch detection in noisy environments.
• Automatic tuning: It features automatic tuning capabilities, adjusting sensitivity and threshold levels based on environmental conditions.

Advantages and Disadvantages

Advantages: - Cost-effective solution for touch interface implementation - Low power consumption extends battery life in portable devices - Compact package suitable for space-constrained designs - Easy integration with I2C interface - Supports multiple touch channels for versatile applications

Disadvantages: - Limited maximum LED driver current per channel (25mA) - Requires external components for complete touch sensing system implementation

Working Principles

The CAP1166-1-CZC-TR operates based on the principle of capacitive sensing. When a conductive object, such as a finger, approaches a touchpad or sensor connected to the IC, it causes a change in capacitance. The IC detects this change and converts it into a digital signal, indicating a touch event.

The touch controller continuously monitors the touch sensors, applying a small AC signal to each sensor and measuring the resulting capacitance. By comparing the measured capacitance with predefined thresholds, the IC determines whether a touch has occurred.

Detailed Application Field Plans

The CAP1166-1-CZC-TR can be applied in various fields, including but not limited to: - Consumer electronics: Smartphones, tablets, laptops, remote controls - Home automation: Touch switches, lighting controls, thermostats - Automotive: Infotainment systems, climate controls, steering wheel controls - Industrial control: Human-machine interfaces, control panels, touch-enabled equipment

Detailed and Complete Alternative Models

1. CAP1188-1-CZ-TR: Similar to CAP1166-1-CZC-TR but supports up to 8 additional touch channels.
2. CAP1298-1-CS-TR: Offers extended touch channel support (up to 32 channels) and additional features such as proximity sensing.

These alternative models provide similar functionality with varying touch channel capacities and additional features to cater to different application requirements.

Word count: 511 words