●DESCRIPTION
●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.
●FEATURES
●• 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
●APPLICATIONS
●• Touch Tone Decoding
●• Precision Oscillator
●• Frequency Monitoring and Control
●• Wide Band FSK Demodulation
●• Ultrasonic Controls
●• Carrier Current Remote Controls
●• Communications Paging Decoders
