EmbeddedRelated.com
The 2026 Embedded Online Conference
    Parts   Consumer Electronics  Touch & Gesture Control    CAP1203-1-SN
CAP1203-1-SN

MCHPCAP1203-1-SN

Microchip Technology
Capacitive Touch Sensors 3-Channel Capacitive Touch Sensor
15,485 in stock
Datasheet Mouser Compare Prices

Overview

The CAP1203-1-SN is a versatile 3-channel capacitive touch sensor that facilitates the addition of touch-sensitive buttons to various electronic devices. It communicates via I2C or SMBus and features advanced signal processing to handle parasitic capacitance and environmental noise, making it highly reliable in diverse operating conditions.

Why Choose This Part

This sensor offers individual threshold settings for each button and automatic recalibration to maintain performance as environmental conditions change. It includes a digital EMI blocker and analog filtering for high reliability in noisy environments, coupled with an 8kV ESD rating for enhanced system durability.

Applications

Consumer Electronics
Ideal for adding sleek, buttonless interfaces to home appliances, smart speakers, and handheld devices.
Volume Control
Utilizes the Press and Hold feature to simulate analog-like volume adjustment for audio equipment.
Battery-Powered Systems
Leverages ultra-low power modes, including a 5uA shutdown current, to maximize battery life in portable products.
Industrial Human-Machine Interfaces
Provides a rugged touch interface that resists EMI and system noise common in industrial environments.

Getting Started

To evaluate the CAP1203-1-SN, use an I2C-capable microcontroller like an Arduino or PIC to configure sensitivity and read touch status via the SMBus-compatible interface. Implementation requires minimal external components as the device handles calibration and filtering internally, while the 8-pin SOIC package is easy to hand-solder during prototyping.

CAP1203-1 Family

Part NumberDifferenceStock
CAP1203-1-AC3-TR Tape & Reel AC3-TR 17,276
Also available as: CAP1203-1-SN-TR

Also Consider

MTCH105 MCHPMicrochip Technology - A 5-channel proximity and touch controller that offers higher channel density for more complex interfaces.
CAP1188 MCHPMicrochip Technology - An 8-channel alternative with integrated LED drivers, suitable for applications requiring illuminated touch feedback.
CY8CMBR3102 IFXInfineon Technologies - A 2-channel CapSense controller focused on low power and simple mechanical-to-touch conversion.

Categories

Consumer Electronics > Touch & Gesture Control
The 2026 Embedded Online Conference