Datasheet
Table Of Contents
- 1 Features
- 2 Applications
- 3 Description
- 4 Simplified Diagram
- Table of Contents
- 5 Revision History
- 6 Device Comparison Table
- 7 Pin Configuration and Functions
- 8 Specifications
- 9 Parameter Measurement Information
- 10 Detailed Description
- 11 Application and Implementation
- 12 Power Supply Recommendations
- 13 Layout
- 14 Device and Documentation Support
- 15 Mechanical, Packaging, and Orderable Information

LM567
,
LM567C
SNOSBQ4E –MAY 1999–REVISED DECEMBER 2014
www.ti.com
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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Product Folder Links: LM567 LM567C