سنسور فلزیاب CS209A
P16-0.7D
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سنسور فلزیاب CS209A
PROXIMITY DETECTOR METAL
مشخصات فنی
Proximity Detector
The CS209A is a bipolar monolithic integrated circuit for use in
metal detection/proximity sensing applications. The IC (see Figure 1
contains two on−chip current regulators, oscillator and low−level
feedback circuitry, peak detection/demodulation circuit, a comparator
and two complementary output stages.)
The oscillator, along with an external LC network, provides
controlled oscillations where amplitude is highly dependent on the Q
of the LC tank. During low Q conditions, a variable low−level
feedback circuit provides drive to maintain oscillation. The peak
demodulator senses the negative portion of the oscillator envelope and
provides a demodulated waveform as input to the comparator. The
comparator sets the states of the complementary outputs by comparing
the input from the demodulator to an internal reference. External loads
are required for the output pins.
A transient suppression circuit is included to absorb negative
transients at the tank circuit terminal
Features
Separate Current Regulator for Oscillator
Negative Transient Suppression
Variable Low−Level Feedback
Improved Performance Over Temperature
6.0 mA Supply Current Consumption at VCC = 12 V
Output Current Sink Capability
A : 20 mA at 4.0 VCC
B : 100 mA at 24 VCC
