LM567CMX/NOPB

音解码器 Tone Decoder

DESCRIPON

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