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XR·567A
Precision Tone Decoder
GENERAL DESCRIPTION
The XR-567A provides all the necessary circuitry for constructing a variety of tone detectors and frequency decoders. Phase-locked loop circuit techniques are used to provide operation from 0.01 Hz tp 500 kHz. The circuit also features an input preamp, a high-current logic output, and programmable output delay.
The XR-567A, available in an a-Pin DIL package, is designed to offer improved frequency accuracy and drift characteristics over the standard industry 567. These changes offer improved overall circuit performance, while reducing initial circuit adjustments.
FUNCTIONAL BLOCK DIAGRAM
OUTPUT FILTER
LOW-PASS LOOP FILTER
INPUT
+Vcc
OUTPUT
GROUND
"I
TIMING RESISTOR AND CAPACITOR
.
XR-567A Datasheet
