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MC33794
The MC33794 is intended for applications where non-contact
sensing of objects is desired. It contains circuitry
necessary to generate a low-level electric field and
measure the field loading caused by objects moved into
the field. The MC33794 is intended for use in detecting
objects in an electric field associated with an electrode.
The IC generates a low-frequency sine wave. The frequency
is adjustable by using an external resistor and is optimized
for 125 kHz. The sine wave has very low harmonic content
to avoid the generation of harmonic interference. The
internal generator produces a nominal 5.0-V peak-to-peak
output, which is passed through an internal resistor
of about 22 kilohms. The MC33794 contains support circuits
for an MCU to allow the construction of a two-chip E-field
system.
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Overview
Application
Description
Data
Sheet
Fact
Sheet
Technical
FAQ
Related
Articles:
E-Field
Evaluation Module
by Fred Eady
Good
Vibrations
by Tom Cantrell
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September
30, 2003
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