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User Module Datasheet: Dual CapSense® Sigma-Delta Datasheet CSD2X V 3.10 (CY8C21x45, CY8C22x45) | Cypress Semiconductor

User Module Datasheet: Dual CapSense® Sigma-Delta Datasheet CSD2X V 3.10 (CY8C21x45, CY8C22x45)

Last Updated: 
May 26, 2014
Version: 
3.10

Features and Overview

  • Scan 1 to 37 capacitive sensors
  • Sensing possible with up to a 15 mm glass overlay
  • Proximity detection to 20 cm with a wire-based sensor
  • High immunity to AC mains noise, EMC noise, and power supply voltage changes
  • Supports different combinations of independent and slide capacitive sensors
  • Double slide sensor physical resolution using diplexing
  • Increase slide sensor resolution using interpolation
  • Touchpad support with two slide sensors
  • Sensing support through high resistive conductive materials (ITO films for example)
  • Shield electrode support for reliable operation in the presence of water film or droplets
  • Guided sensor and pin assignments using the CSD2x Wizard
  • Integrated baseline update algorithm for handling temperature, humidity, and electrostatic discharge (ESD) events
  • Easily adjustable operational parameters
  • PC GUI application support for raw data monitoring and parameter optimization in real-time
     

The CSD2X User Module (Capacitive Sensing using a Sigma-Delta Modulator) gives capacitance sensing using the switched capacitor technique with a sigma-delta modulator to convert the sensing switched capacitor current to digital code. The CSD2X User Module can support single-channel CapSense scanning and dual-channel CapSense scanning (scans two sensors simultaneously).

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