Tone Decoder 8-Pin SOIC N

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. External components are used to independently set center frequency, bandwidth and output delay.

20 to 1 Frequency Range With an External Resistor

Logic Compatible Output With 100-mA Current Sinking
Capability

Bandwidth Adjustable From 0 to 14%

High Rejection of Out of Band Signals and Noise

Immunity to False Signals

Highly Stable Center Frequency

Center Frequency Adjustable from 0.01 Hz to
500 kHz