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The LM567 is a general-purpose tone decoder designed to provide a saturated transistor switch to the ground when an input signal is present within the passband. The circuit consists of an I and Q detector is 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.
LM567 Pinout
LM567 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | OUTPUT FILTER | Output Filter Pin |
| 2 | LOOP FILTER | Loop Filter Pin |
| 3 | INPUT | Input Pin |
| 4 | V+ | Positive Supply Pin |
| 5 | TIMING RESISTOR | Timing Resistor Pin |
| 6 | TIMING CAPACITOR | Timing Capacitor Pin |
| 7 | GND | Ground Pin |
| 8 | OUTPUT | Output Pin |
LM567 Features
- 20 to 1 frequency range with an external resistor
- Logic compatible output with 100 mA current sinkingcapability
- 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
Application
- Touch tone decoding
- Precision oscillator
- Frequency monitoring and control
- Wide band FSK demodulation
- Ultrasonic controls
- Carrier current remote controls
- Communications paging decoders
You can download this datasheet for LM567 Tone Decoder – Datasheet from the link given below:
