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User Module Datasheet: CapSense® Sigma-Delta Plus ADC Datasheet CSDADC V 1.50 (CY8C21x34, CY8CLED04) | Cypress Semiconductor

User Module Datasheet: CapSense® Sigma-Delta Plus ADC Datasheet CSDADC V 1.50 (CY8C21x34, CY8CLED04)

Last Updated: 
Jun 04, 2013
Version: 
1.50

Features and Overview

  • Allows scanning CapSense sensors and measuring input voltages without using separate loadable configurations
  • ADC features:
    • Absolute and ratiometric ADC input modes with run-time mode switching allows you to easily scan different sensor types
    • Single slope ADC for absolute voltage input mode
    • Built-in calibration mechanism for the single-slope ADC
    • Integrating incremental ADC for ratiometric input mode
    • Allows a coarse temperature measurement: range of -40°C to +125°, accuracy of ± 40°C with resolution ± 2°C
  • CapSense® features:
    • Based on the robust CSD method
    • Scans 1 to 28 capacitive sensors
    • Sensing possible with up to a 15-mm glass overlay
    • Proximity detection to 20 cm with a wire-based sensor
    • For more, see pdf

Functional Description

The CSDADC combines capacitance sensing with ADC functionality for voltage measurement without using separate loadable configurations. It saves code space by reusing modules common to both the CSD and ADC. You should use the CSDADC when you need both capacitance sensing and ADC functionality. Applications that need one or the other should use the CSD User Module or the ADC8 or ADC10.

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