MCHPCAP1298-1-SL
Overview
The CAP1298-1-SL is an 8-channel capacitive touch sensor controller that provides high-performance proximity and touch detection via an SMBus or I2C interface. It features integrated signal guarding and automatic recalibration to maintain sensitivity in electrically noisy environments or varying temperatures. The device is designed to simplify the implementation of touch-sensitive buttons and proximity wake-up features in consumer and industrial applications.
Why Choose This Part
This controller offers a robust digital EMI blocker and RF detection filters to prevent false triggers in noisy environments. The inclusion of a signal guard helps isolate the proximity antenna from parasitic attenuation, while the deep sleep mode reduces current consumption to as low as 5uA for battery-powered designs.
Applications
Key Specifications
Getting Started
Development can begin with the Microchip CAP1298 Evaluation Board to tune sensitivity and threshold settings via the SMBus interface. Engineers should use the provided Microchip GUI tools to visualize sensor response and configure the automatic recalibration registers to match their specific overlay material and thickness.
