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CAP1298 - 8-Channel Capacitive Touch Sensor Controller

General Description

The CAP1298 is a multiple channel capacitive touch sensor controller.

It contains eight (8) individual capacitive touch sensor inputs with programmable sensitivity for use in touch sensor applications.

Key Features

  • Eight (8) Capacitive Touch Sensor Inputs - Programmable sensitivity - Automatic recalibration - Calibrates for parasitic capacitance - Individual thresholds for each button.
  • Proximity Detection.
  • Signal Guard - Isolates the proximity antenna from attenuation - Reduces system noise sensitivity effects on inputs.
  • Multiple Button Pattern Detection.
  • Power Button Support.
  • Press and Hold Feature for Volume-like Applica- tions.
  • 3.3V or 5V S.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CAP1298 8-Channel Capacitive Touch Sensor Controller with Proximity Detection & Signal Guard General Description The CAP1298 is a multiple channel capacitive touch sensor controller. It contains eight (8) individual capacitive touch sensor inputs with programmable sensitivity for use in touch sensor applications. Each sensor input is calibrated to compensate for system parasitic capacitance and automatically recalibrated to compensate for gradual environmental changes. In addition, the CAP1298 can be configured to detect proximity on one or more channels with an optional signal guard to reduce noise sensitivity and to isolate the proximity antenna from nearby conductive surfaces that would otherwise attenuate the e-field.