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CAP1293-1-AC3-TR

MCHPCAP1293-1-AC3-TR

Microchip Technology
Capacitive Touch Sensors 3-Channel Capacitive Touch Sensor
3,831 in stock

Overview

The CAP1293-1-AC3-TR is a 3-channel capacitive touch sensor featuring integrated proximity detection and signal guarding. It operates over a wide 3V to 5.5V supply range and includes advanced filtering to mitigate environmental noise and RF interference in consumer and industrial designs.

Why Choose This Part

This sensor offers robust ESD protection of 8kV (HBM) and active signal guarding to reduce parasitic capacitance effects. Its low power profile, drawing only 5uA in deep sleep and 50uA in standby, makes it ideal for battery-operated devices requiring high responsiveness.

Applications

Smart Home Control Panels
Providing reliable touch-sensitive buttons for wall-mounted switches or thermostat interfaces that require low power consumption.
Proximity Wake-up
Utilizing the high-sensitivity proximity detection to wake a system from deep sleep as a user approaches, extending battery life.
Industrial Human Machine Interfaces (HMI)
Implementing rugged, sealed touch surfaces that replace mechanical buttons in environments with significant electromagnetic noise.
Power Button Support
Designing dedicated power-on sequences using the Multiple Button Pattern Detection feature to prevent accidental activations.

Key Specifications

Type Buttons
Interface I2C, SMBus
Mounting Type Surface Mount
Package / Case 8-WFDFN Exposed Pad
Current - Supply 500uA
Number of Inputs 3
Voltage - Supply 3V ~ 5.5V
Proximity Detection Yes
Operating Temperature -40degC ~ 125degC
Supplier Device Package 8-TDFN (2x3)

Getting Started

Evaluation can be performed using Microchip hardware development tools or by interfacing the 8-TDFN package directly with a microcontroller via the SMBus/I2C interface. Firmware development is simplified by the device's automatic recalibration and programmable sensitivity registers which allow tuning for various overlay materials and thicknesses.

CAP1293-1 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Current - Supply Stock
CAP1293-1-AC3-TR (this part) Tape & Reel WFDFN-8 500uA 3,831
CAP1293-1-SN-TR Tape & Reel SOIC-8 750uA 5,490

Also Consider

CAP1133-1-AIA-TR MCHPMicrochip Technology - A similar 3-channel capacitive touch controller that includes integrated LED drivers for simplified user feedback implementations.
CY8CMBR3102-SX1I IFXInfineon Technologies - A 2-channel CapSense controller featuring CapSense Express technology for configuration without writing firmware code.
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