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MC33941 - Electric Field Imaging Device

Key Features

  • Supports up to 7 Electrodes Shield Driver for Driving Remote Electrodes Through Coaxial High-Purity Sine Wave Generator Tunable with External Resistor Response Time Tunable with External Capacitor +5V Regulator to Power External Circuit Can support up to 28 touch pad sensors (2 way multiplexing) Extended Temperature Range 0 to 110oC Pb-Free and RoHS compliant EG SUFFIX (Pb-FREE) 24-.

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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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www.DataSheet4U.com Freescale Semiconductor Technical Data Document Number: MC33941 Rev. 3, 11/2006 Electric Field Imaging Device The MC33941 is intended for cost-sensitive applications where non-contact sensing of objects is desired. When connected to external electrodes, an electric field is created. The MC33941 detects objects in this electric field. The IC generates a low-frequency sine wave, which is adjustable by using an external resistor and is optimized for 120 kHz. The sine wave has very low harmonic content to reduce harmonic interference. The MC33941 also contains support circuits for a microcontroller unit (MCU) to allow the construction of a two-chip E-field system.