DESCRIPTION PIN CONFIGURATION The NE567/SE567 tone and frequency decoder is a highly stable phase-locked loop with synchronous AM lock detection and power D, N Packages output circuitry. Its primary function is to drive a load whenever a OUTPUT FILTER 1 8 OUTPUT sustained frequency within its detection band is present at the CAPACITOR C3 LOW-PASS FILTER 2 7 self-biased input. The bandwidth center frequency and output delay GROUND CAPACITOR C2 are independently determined by means of four external INPUT 3 6 TIMING ELEMENTS R1 AND C1 components. 4 5 TIMING ELEMENT R1 SUPPLY VOLTAGE V+ TOP VIEW SL00538 Figure 1. Pin configuration FEATURES APPLICATIONS · Wide frequency range (0.01 Hz to 500 kHz) · Touch-Tone® decoding · High stability of center frequency · Carrier current remote controls · Independently controllable bandwidth (up to 14%) · Ultrasonic controls (remote TV, etc.) · High out-band signal and noise rejection · Communications paging · Lo