XR·567 Monolithic Tone Decoder GENERAL DESCRIPTION The XR-567 is a monolithic phase-locked loop system designed for general purpose tone and frequency decoding.
The circuit operates over a wide frequency band of 0.
01 Hz to 500 kHz and contains a logic compatible output which can sink up to 100 milliamps of load current.
The bandwidth, center frequency, and output delay are independently determined by the selection of four external components.
FUNCTIONAL BLOCK DIAGRAM OUTPUT fll HR lOW PASS lOOP Fll HR The circuit consists of a phase detector, low-pass filter, and current-controlled oscillator which comprise the basic phase-locked loop; plus an additional low-pass filter and quadrature de...

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