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CAP1293-1-SN-TR

MCHPCAP1293-1-SN-TR

Microchip Technology
Capacitive Touch Sensors 3-Channel Capacitive Touch Sensor
5,490 in stock
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Overview

The CAP1293-1-SN-TR is a versatile 3-channel capacitive touch sensor controller with proximity detection and integrated signal guarding. It operates over a wide voltage range of 3V to 5.5V and features advanced digital EMI blocking and RF detection to maintain reliable touch performance in noisy environments.

Why Choose This Part

This sensor features integrated signal guarding to isolate the proximity antenna from parasitic attenuation and system noise. It simplifies design-in with automatic recalibration and individual threshold programming for each of the three inputs, ensuring consistent performance across different overlay materials.

Applications

Home Automation
Ideal for light switches, thermostat controls, and white goods where sleek, touch-sensitive interfaces are preferred over mechanical buttons.
Proximity Sensing
Enables 'wake-on-approach' functionality to conserve power by keeping the system in sleep mode until a user is near the device.
Industrial Control Panels
Suitable for harsh industrial environments due to its high 8kV ESD rating and robust RF avoidance filters.
Battery Powered Devices
Low power consumption with a 5uA deep sleep mode makes it suitable for portable electronics and remote monitoring tools.

Key Specifications

Type Buttons
Interface I2C, SMBus
Resolution 8 b
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Current - Supply 750uA
Number of Inputs 3
Voltage - Supply 3V ~ 5.5V
Proximity Detection Yes
Operating Temperature -40degC ~ 125degC
Supplier Device Package 8-SOIC

Getting Started

Evaluation can be performed using Microchip hardware tools such as the CAP1293 Evaluation Board or by connecting the I2C/SMBus pins to any standard microcontroller. Configuration is managed through internal registers to tune sensitivity levels and power modes; reference code is typically available via the Microchip libraries for PIC or AVR microcontrollers.

CAP1293-1 Family

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

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

Also Consider

CAP1188-1-CP-TR MCHPMicrochip Technology - Offers 8 channels instead of 3 for designs requiring larger touch matrices or more complex user interfaces.
CY8CMBR3102-SX1I IFXInfineon Technologies - A 2-channel alternative featuring CapSense Express technology with CapSense Plus for simple, no-code configuration.
AT42QT1010-TSHR MCHPMicrochip Technology - A single-channel touch controller in a smaller SOT-23 package for ultra-compact, single-button applications.
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