Datasheet

Table Of Contents
LM567
,
LM567C
SNOSBQ4E MAY 1999REVISED DECEMBER 2014
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9 Parameter Measurement Information
All parameters are measured according to the conditions described in the Specifications section.
10 Detailed Description
10.1 Overview
The LM567C is a general purpose tone decoder. The circuit consists of I and Q detectors driven by a voltage
controlled oscillator which determines the center frequency of the decoder. This device is designed to provide a
transistor switch to ground output when the input signal frequency matches the center frequency pass band.
Center frequency is set by an external timing circuit composed by a capacitor and a resistor. Bandwidth and
output delay are set by external capacitors.
10.2 Functional Block Diagram
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