CY8CMBR3002-SX1IT

Overview

The CY8CMBR3002-SX1IT is a register-configurable capacitive touch controller supporting two sensing inputs. It operates on a supply voltage range of 1.71 V to 5.5 V with a maximum clock frequency of 400 kHz via I2C. The device features an average current consumption of 22 µA per sensor at a 120-ms refresh interval and functions within an industrial temperature range of -40 °C to +85 °C. Packaged in an SOIC-8 format, it utilizes the CSD PLUS algorithm for high sensitivity and noise immunity.

Feature Summary

• Patented CSD PLUS sensing algorithm providing superior noise immunity and high sensitivity
• SmartSense Auto-tuning eliminates manual tuning by dynamically maintaining optimal sensor performance
• Liquid tolerance capabilities prevent false touches caused by water droplets or streaming water
• Register configurability allows feature customization without firmware development

Applications

• Capacitive button interfaces replacing mechanical switches
• Proximity detection solutions requiring wake-on-approach functionality
• User interface systems operating in wet or noisy environments

Procurement Notes

Verify the specific ordering suffix against official Infineon documentation to ensure correct package type and tape-and-reel specifications. Confirm that the component meets RoHS compliance requirements for your target market. Cross-reference the datasheet revision history to ensure compatibility with existing design files and manufacturing processes.

Selection Notes

Select this model when the application requires exactly two capacitive sensing channels. Evaluate the need for liquid tolerance and auto-tuning features to reduce development time. Ensure the host system supports I2C communication and can handle the specified voltage levels. Consider the SOIC-8 package constraints regarding PCB layout and thermal management.

Part Context

This component belongs to the CY8CMBR3xxx CapSense Express family, which provides firmware-free capacitive sensing solutions. The family includes variants with different numbers of sensing inputs and feature sets. This specific part represents the entry-level configuration within the series, focusing on basic button and proximity sensing capabilities.

Replacement Considerations

Direct replacements within the same family include CY8CMBR3102-SX1IT, which offers similar core functionality but may differ in specific diagnostic features or output configurations. Verify pinout compatibility and register map alignment before substitution.