Proximity Sensor

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The MC34940 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 MC34940 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 120kHz. The sine wave has very low harmonic content to reduce harmonic interference. The MC34940 also contains support circuits for a microcontroller unit (MCU) to allow the construction of a two chip E-field system.

 

FEATURES Supports up to 7 electrodes Shielded driver for driving remote electrodes through coaxial High purity sine wave generator tunable with external resistor Response time tunable with external capacitor Can support up to 28 touch pad sensors     BENEFITS One device simultaneously supports multifunctional applications Low cost Low component count - saves space

APPLICATIONS Central body controllers Cooking products Dishwashers Dryers Energy meters Refrigerators and freezers Vacuum cleaners Washing machines

 

 

 

 

 

 Featured Products

Part Number		Description	Data Sheet	App. Notes
MC34940EG		Proximity Sensor

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