AT42QT2120-SU - Microchip Technology

Manufacturer Part Number

AT42QT2120-SU

Manufacturer

Microchip Technology

Introduction

The AT42QT2120 is a capacitive touch sensor controller designed for implementing button, slider, and wheel input functions.

Product Features and Performance

Touch controller for buttons, sliders, and wheels

Proximity detection capability

Supports up to 12 touch inputs

Drives up to 10 LED channels

I2C interface for communication

Adjustable sensitivity for improved touch performance

Built-in spread-spectrum modulation for EMI reduction

Supports various power modes to save energy

Product Advantages

Offers versatile touch functionality

Robust proximity sensing for wake-up applications

Integrated LED driver reduces additional component requirements

QTouch™ Series known for reliable touch sensing solutions

Key Technical Parameters

Number of Inputs: Up to 12

LED Driver Channels: Up to 10

Interface: I2C

Voltage - Supply: 1.8V to 5.5V

Operating Temperature: -40°C to 85°C

Mounting Type: Surface Mount

Package / Case: 20-SOIC

Quality and Safety Features

Built-in self-calibration maintains touch sensitivity over time

Automatic drift compensation adapts to changing environmental conditions

Quality assured by Microchip's rigorous testing standards

Compatibility

Compatible with a wide range of MCUs via I2C interface

Supported by Microchip development tools for easy implementation

Application Areas

Consumer electronics touch interfaces

Automotive controls and interfaces

Industrial machine input panels

Home automation touch panels

Product Lifecycle

Status: Active

This product is not nearing discontinuation

Replacements or upgrades are readily available for future designs

Several Key Reasons to Choose This Product

Proven QTouch™ technology ensures reliable touch detection

Comprehensive features enable a variety of touch inputs

Simple integration with a broad range of electronic devices

Microchip's strong support and resources for design-in process

Optimized for power consumption to extend battery life in portable devices

Versatile I/O options make it suitable for multiple product categories