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LM567
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LM567C
SNOSBQ4E –MAY 1999–REVISED DECEMBER 2014
LM567x Tone Decoder
1 Features 3 Description
The LM567 and LM567C are general purpose tone
1• 20 to 1 Frequency Range With an External decoders designed to provide a saturated transistor
Resistor switch to ground when an input signal is present
• Logic Compatible Output With 100-mA Current within the passband. The circuit consists of an I and
Sinking Capability Q detector driven by a voltage controlled oscillator
which determines the center frequency of the
• Bandwidth Adjustable From 0 to 14% decoder. External components are used to
• High Rejection of Out of Band Signals and Noise independently set center frequency, bandwidth and
• Immunity to False Signals output delay.
• Highly Stable Center Frequency Device Information(1)
• Center Frequency Adjustable from 0.01 Hz to PART NUMBER PACKAGE BODY SIZE (NOM)
500 kHz SOIC (8) 4.90 mm × 3.91 mm
LM567C
2 Applications PDIP (8) 9.81 mm × 6.35 mm
• Touch Tone Decoding (1) For all available packages, see the orderable addendum at
the end of the datasheet.
• Precision Oscillator
• Frequency Monitoring and Control
• Wide Band FSK Demodulation
• Ultrasonic Controls
• Carrier Current Remote Controls
• Communications Paging Decoders
4 Simplified Diagram
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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Table of Contents
10.2 Functional Block Diagram....................................... 8
1 Features.................................................................. 110.3 Feature Description................................................. 9
2 Applications ........................................................... 110.4 Device Functional Modes...................................... 10
3 Description............................................................. 111 Application and Implementation........................ 12
4 Simplified Diagram ................................................ 111.1 Application Information.......................................... 12
5 Revision History..................................................... 211.2 Typical Applications .............................................. 13
6 Device Comparison Table..................................... 312 Power Supply Recommendations ..................... 19
7 Pin Configuration and Functions......................... 313 Layout................................................................... 19
8 Specifications......................................................... 413.1 Layout Guidelines ................................................. 19
8.1 Absolute Maximum Ratings ...................................... 413.2 Layout Example .................................................... 19
8.2 Recommended Operating Conditions....................... 414 Device and Documentation Support................. 20
8.3 Thermal Information.................................................. 414.1 Related Links ........................................................ 20
8.4 Electrical Characteristics........................................... 514.2 Trademarks........................................................... 20
8.5 Typical Characteristics.............................................. 614.3 Electrostatic Discharge Caution............................ 20
9 Parameter Measurement Information .................. 814.4 Glossary................................................................ 20
10 Detailed Description ............................................. 815 Mechanical, Packaging, and Orderable
10.1 Overview................................................................. 8Information........................................................... 20
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (March 2013) to Revision E Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes,Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
Changes from Revision C (March 2013) to Revision D Page
• Changed layout of National Data Sheet to TI format ............................................................................................................. 9
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6 Device Comparison Table
DEVICE NAME DESCRIPTION
LM567, LM567C General Purpose Tone Decoder
LMC567 Same as LM567C, but lower power supply current consumption and double oscillator frequency
7 Pin Configuration and Functions
8-Pin
PDIP (P) and SOIC (D) Package
Top View
Pin Functions
PIN TYPE DESCRIPTION
NAME NO.
GND 7 P Circuit ground.
IN 3 I Device input.
LF_CAP 2 I Loop filter capacitor pin (LPF of the PLL).
OUT 8 O Device output.
OF_CAP 1 I Output filter capacitor pin.
T_CAP 5 I Timing capacitor connection pin.
T_RES 6 I Timing resistor connection pin.
VCC 4 P Voltage supply pin.
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8 Specifications
8.1 Absolute Maximum Ratings(1)(2)(3)
MIN MAX UNIT
Supply Voltage Pin 9 V
Power Dissipation(4) 1100 mW
V815 V
V3−10 V
V3V4+ 0.5 V
LM567CM, LM567CN 0 70 °C
PDIP Package Soldering (10 s) 260 °C
Operating Temperature Range Vapor Phase (60 s) 215 °C
SOIC Package Infrared (15 s) 220 °C
Storage temperature range, Tstg −65 150 °C
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Recommended Operating Conditions indicate
conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC
electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within
the Recommended Operating Conditions. Specifications are not ensured for parameters where no limit is given, however, the typical
value is a good indication of device performance.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) See http://www.ti.com for other methods of soldering surface mount devices.
(4) The maximum junction temperature of the LM567 and LM567C is 150°C. For operating at elevated temperatures, devices in the DIP
package must be derated based on a thermal resistance of 110°C/W, junction to ambient. For the SOIC package, the device must be
derated based on a thermal resistance of 160°C/W, junction to ambient.
8.2 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT
VCC Supply Voltage 3.5 8.5 V
VIN Input Voltage Level –8.5 8.5 V
TAOperating Temperature Range –20 120 °C
8.3 Thermal Information LM567C
THERMAL METRIC(1) D P UNIT
8 PINS
RθJA Junction-to-ambient thermal resistance 107.5 53.0
RθJC(top) Junction-to-case (top) thermal resistance 54.6 42.3
RθJB Junction-to-board thermal resistance 47.5 30.2 °C/W
ψJT Junction-to-top characterization parameter 10.0 19.6
ψJB Junction-to-board characterization parameter 47.0 30.1
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
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8.4 Electrical Characteristics
AC Test Circuit, TA= 25°C, V+= 5 V LM567 LM567C/LM567CM
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX MIN TYP MAX
Power Supply Voltage Range 4.75 5.0 9.0 4.75 5.0 9.0 V
Power Supply Current Quiescent RL= 20k 6 8 7 10 mA
Power Supply Current Activated RL= 20k 11 13 12 15 mA
Input Resistance 18 20 15 20 kΩ
Smallest Detectable Input Voltage IL= 100 mA, fi= fo20 25 20 25 mVrms
Largest No Output Input Voltage IC= 100 mA, fi= fo10 15 10 15 mVrms
Largest Simultaneous Outband Signal to 6 6 dB
Inband Signal Ratio
Minimum Input Signal to Wideband Noise Bn= 140 kHz −6−6 dB
Ratio
Largest Detection Bandwidth 12 14 16 10 14 18 % of fo
Largest Detection Bandwidth Skew 1 2 2 3 % of fo
Largest Detection Bandwidth Variation with ±0.1 ±0.1 %/°C
Temperature
Largest Detection Bandwidth Variation with 4.75 – 6.75 V ±1 ±2 ±1 ±5 %V
Supply Voltage
Highest Center Frequency 100 500 100 500 kHz
Center Frequency Stability (4.75 – 5.75 V) 0 < TA< 70 35 ± 60 35 ± 60 ppm/°C
−55 < TA< +125 35 ± 140 35 ± 140 ppm/°C
Center Frequency Shift with Supply Voltage 4.75 V – 6.75 V 0.5 1.0 0.4 2.0 %/V
4.75 V – 9 V 2.0 2.0 %/V
Fastest ON-OFF Cycling Rate fo/20 fo/20
Output Leakage Current V8= 15 V 0.01 25 0.01 25 µA
Output Saturation Voltage ei= 25 mV, I8= 30 mA 0.2 0.4 0.2 0.4 V
ei= 25 mV, I8= 100 mA 0.6 1.0 0.6 1.0
Output Fall Time 30 30 ns
Output Rise Time 150 150 ns
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8.5 Typical Characteristics
Figure 2. Typical Bandwidth Variation
Figure 1. Typical Frequency Drift
Figure 4. Typical Frequency Drift
Figure 3. Typical Frequency Drift
Figure 5. Bandwidth vs Input Signal Amplitude Figure 6. Largest Detection Bandwidth
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Typical Characteristics (continued)
Figure 7. Detection Bandwidth as a Function of C2and C3Figure 8. Typical Supply Current vs Supply Voltage
Figure 9. Greatest Number of Cycles Before Output Figure 10. Typical Output Voltage vs Temperature
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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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10.3 Feature Description
10.3.1 Center Frequency
The center frequency of the LM567 tone decoder is equal to the free running frequency of the voltage controlled
oscillator. In order to set this frequency, external components should be placed externally. The component
values are given by:
where
• R1= Timing Resistor
• C1= Timing Capacitor (1)
10.3.2 Output Filter
To eliminate undesired signals that could trigger the output stage, a post detection filter is featured in the
LM567C. This filter consists of an internal resistor (4.7K-Ω) and an external capacitor. Although typically external
capacitor value is not critical, it is recommended to be at least twice the value of the loop filter capacitor. If the
output filter capacitor value is too large, the turn-on and turn off-time of the output will present a delay until the
voltage across this capacitor reaches the threshold level.
10.3.3 Loop Filter
The phase locked loop (PLL) included in the LM567 has a pin for connecting the low pass loop filter capacitor.
The selection of the capacitor for the filter depends on the desired bandwidth. The device bandwidth selection is
different according to the input voltage level. Refer to the Operation With Vi< 200m – VRMS section and the
Operation With Vi> 200m – VRMS section for more information about the loop filter capacitor selection.
10.3.4 Logic Output
The LM567 is designed to provide a transistor switch to ground output when the input signal frequency matches
the center frequency pass band. The logic output is an open collector power transistor that requires an external
load resistor that is used to regulate the output current level.
10.3.5 Die Characteristics
Figure 11. Die Layout (C - Step)
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Feature Description (continued)
Table 1. Die and Wafer Characteristics
Fabrication Attributes General Die Information
Physical Die Identification LM567C Bond Pad Opening Size (min) 91µm x 91µm
Die Step C Bond Pad Metalization 0.5% COPPER_BAL.
ALUMINUM
Physical Attributes Passivation VOM NITRIDE
Wafer Diameter 150mm Back Side Metal BARE BACK
Dise Size (Drawn) 1600µm x 1626µm Back Side Connection Floating
63.0mils x 64.0mils
Thickness 406µm Nominal
Min Pitch 198µm Nominal
Special Assembly Requirements:
Note: Actual die size is rounded to the nearest micron.
Die Bond Pad Coordinate Locations (C - Step)
(Referenced to die center, coordinates in µm) NC = No Connection, N.U. = Not Used
X/Y COORDINATES PAD SIZE
SIGNAL NAME PAD# NUMBER X Y X Y
OUTPUT FILTER 1 -673 686 91 x 91
LOOP FILTER 2 -673 -419 91 x 91
INPUT 3 -673 -686 91 x 91
V+ 4 -356 -686 91 x 91
TIMING RES 5 673 -122 91 x 91
TIMING CAP 6 673 76 91 x 91
GND 7 178 686 117 x 91
OUTPUT 8 -318 679 117 x 104
10.4 Device Functional Modes
10.4.1 Operation With Vi< 200m – VRMS
When the input signal is below a threshold voltage, typically 200m-VRMS, the bandwidth of the detection band
should be calculated .
where
• Vi= Input voltage (volts rms), Vi≤200mV
• C2= Capacitance at Pin 2(μF)
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Device Functional Modes (continued)
10.4.2 Operation With Vi> 200m – VRMS
For input voltages greater than 200m-VRMS, the bandwidth depends directly from the loop filter capacitance and
free running frequency product. Bandwidth is represented as a percentage of the free running frequency, and
according to the product of f0∙C2, it can have a variation from 2 to 14%. Table 2 shows the approximate values
for bandwidth in function of the product result.
Table 2. Detection Bandwidth in Function of fo× C2
fo× C2(kHzµF) Bandwidth (% of fo)
62 2
16 4
7.3 6
4.1 8
2.6 10
1.8 12
1.3 14
< 1.3 14
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11 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
11.1 Application Information
The LM567 tone decoder is a device capable of detecting if an input signal is inside a selectable range of
detection. The device has an open collector transistor output, so an external resistor is required to achieve
proper logic levels. When the input signal is inside the detection band, the device output will go to a LOW state.
The internal VCO free running frequency establishes the detection band central frequency. An external RC filter
is required to set this frequency. The bandwidth in which the device will detect the desired frequency depends on
the capacitance of loop filter terminal. Typically a 1µF capacitor is connected to this pin. The device detection
band has a different behavior for low and high input voltage levels. Refer to the Operation With Vi< 200m – VRMS
section and the Operation With Vi> 200m – VRMS section for more information.
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11.2 Typical Applications
11.2.1 Touch-Tone Decoder
Component values (typ)
R1 6.8 to 15k
R2 4.7k
R3 20k
C1 0.10 mfd
C2 1.0 mfd 6V
C3 2.2 mfd 6V
C4 250 mfd 6V
Figure 12. Touch-Tone Decoder
11.2.1.1 Design Requirements
PARAMETERS VALUES
Supply Voltage Range 3.5 V to 8.5 V
Input Voltage Range 20 mVRMS to VCC + 0.5
Input Frequency 1 Hz to 500 kHz
Output Current Max. 15 mA
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IN (PIN 3)
OUT (PIN 8)
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11.2.1.2 Detailed Design Procedure
11.2.1.2.1 Timing Components
To calculate the timing components for an approximated desired central detection frequency (f0), the timing
capacitor value (C1) should be stated in order to calculate the timing resistor value (R1). Typically for most
applications, a 0.1-µF capacitor is used.
(2)
11.2.1.2.2 Bandwidth
Detection bandwidth is represented as a percentage of f0. It can be selected based on the input voltage levels
(Vi). For Vi < 200 mVRMS,
(3)
For Vi > 200 mVRMS, refer to Table 2 or Figure 5.
11.2.1.2.3 Output Filter
The output filter selection is made considering the capacitor value to be at least twice the Loop filter capacitor.
C3≥2C2(4)
11.2.1.3 Application Curve
Figure 13. Frequency Detection
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11.2.2 Oscillator with Quadrature Output
Connect Pin 3 to 2.8V to Invert Output
Figure 14. Oscillator with Quadrature Output
11.2.2.1 Design Requirements
Refer to the previous Design Requirements section.
11.2.2.2 Detailed Design Procedure
Refer to the previous Detailed Design Procedure section.
11.2.2.3 Application Curve
Figure 15. Quadrature Output
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11.2.3 Oscillator with Double Frequency Output
Figure 16. Oscillator with Double Frequency Output
11.2.3.1 Design Requirements
Refer to the previous Design Requirements section.
11.2.3.2 Detailed Design Procedure
Refer to the previous Detailed Design Procedure section.
11.2.3.3 Application Curve
Figure 17. Double Frequency Output
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11.2.4 Precision Oscillator Drive 100-mA Loads
Figure 18. Precision Oscillator Drive 100-mA Loads
11.2.4.1 Design Requirements
Refer to the previous Design Requirements section.
11.2.4.2 Detailed Design Procedure
Refer to the previous Detailed Design Procedure section.
11.2.4.3 Application Curve
Figure 19. Output for 100-mA Load
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11.2.5 AC Test Circuit
fi= 100 kHz + 5 V
*Note: Adjust for fo= 100 kHz.
11.2.5.1 Design Requirements
Refer to the previous Design Requirements section.
11.2.5.2 Detailed Design Procedure
Refer to the previous Detailed Design Procedure section.
11.2.5.3 Application Curve
Refer to the previous Application Curve section.
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12 Power Supply Recommendations
The LM567C is designed to operate with a power supply up to 9 V. It is recommended to have a well regulated
power supply. As the operating frequency of the device could be very high for some applications, the decoupling
of power supply becomes critical, so is required to place a proper decoupling capacitor as close as possible to
VCC pin.
13 Layout
13.1 Layout Guidelines
The VCC pin of the LM567 should be decoupled to ground plane as the device can work with high switching
speeds. The decoupling capacitor should be placed as close as possible to the device. Traces length for the
timing and external filter components should be kept at minimum in order to avoid any possible interference from
other close traces.
13.2 Layout Example
Figure 20. LM567 Layout Example
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14 Device and Documentation Support
14.1 Related Links
The table below lists quick access links. Categories include technical documents, support and community
resources, tools and software, and quick access to sample or buy.
Table 3. Related Links
TECHNICAL TOOLS & SUPPORT &
PARTS PRODUCT FOLDER SAMPLE & BUY DOCUMENTS SOFTWARE COMMUNITY
LM567 Click here Click here Click here Click here Click here
LM567C Click here Click here Click here Click here Click here
14.2 Trademarks
All trademarks are the property of their respective owners.
14.3 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
14.4 Glossary
SLYZ022 —TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
15 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
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TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
LM567CMX/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 5-Nov-2017
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
LM567CMX/NOPB SOIC D 8 2500 367.0 367.0 35.0
PACKAGE MATERIALS INFORMATION
www.ti.com 5-Nov-2017
Pack Materials-Page 2
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ensure compliance with safety-related requirements and standards applicable to their applications. Designer may not use any TI products in
life-critical medical equipment unless authorized officers of the parties have executed a special contract specifically governing such use.
Life-critical medical equipment is medical equipment where failure of such equipment would cause serious bodily injury or death (e.g., life
support, pacemakers, defibrillators, heart pumps, neurostimulators, and implantables). Such equipment includes, without limitation, all
medical devices identified by the U.S. Food and Drug Administration as Class III devices and equivalent classifications outside the U.S.
TI may expressly designate certain products as completing a particular qualification (e.g., Q100, Military Grade, or Enhanced Product).
Designers agree that it has the necessary expertise to select the product with the appropriate qualification designation for their applications
and that proper product selection is at Designers’ own risk. Designers are solely responsible for compliance with all legal and regulatory
requirements in connection with such selection.
Designer will fully indemnify TI and its representatives against any damages, costs, losses, and/or liabilities arising out of Designer’s non-
compliance with the terms and provisions of this Notice.
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LM567CM LM567CM/NOPB LM567CMX LM567CMX/NOPB LM567CN/NOPB NE567V