LM567 decoder equivalent, tone decoder.
*1 20 to 1 Frequency Range With an External Resistor
* Logic Compatible Output With 100-mA Current Sinking Capability
* Bandwidth Adjustable From 0 to 14%
* Touch Tone Decoding
* Precision Oscillator
* Frequency Monitoring and Control
* Wide Band FSK Demodula.
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 oscilla.
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