Part LM567
Description Tone Decoder
Manufacturer National Semiconductor
Size 296.16 KB
National Semiconductor
LM567

Overview

The LM567 and LM567C are general purpose tone decoders designed to provide a saturated transistor switch to ground when an input signal is present within the passband. The circuit consists of an I and Q detector driven by a voltage controlled oscillator which determines the center frequency of the decoder.

  • 20 to 1 frequency range with an external resistor
  • Logic compatible output with 100 mA current sinking capability
  • Bandwidth adjustable from 0 to 14% Connection Diagrams Metal Can Package Dual-In-Line and Small Outline Packages