NJM567 TONE DECODER / PHASE LOCKED LOOP

The NJM567 Tone and frequency decoder is a highly stable Phase locked loop with synchronous AM lock detection and power output circuitry. Its primary function is to drive a load whenever a sustained frequency within its detection band is present at the self-biased input. The bandwidth cebter frequencyand output delay are independently determined by means of four external components.
By New Japan Radio Co.,Ltd