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Metal Proximity Detector IC
Description
The LD209A (analog CS209A) is a bipolar monolithic integrated
circuit for use in metal detection/ proximity sensing applications.
The IC (see block diagram) 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 envelop 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
Packaging : LD1041 chip is sealed with standard DIP8, SOP8 and SOP14. (SOP14 accept batch order)
Factory Outlet, spot stock. Good reliability, quality assurance.
Free sample, pre-sales & after sales application and technical supports services will be provided.
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