LM567/LM567C
LM567/LM567C Tone Decoder
1
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
2
•
•
•
•
•
•
DESCRIPTION
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.
CONNECTION DIAGRAM
Figure 2. PDIP and SOIC Packages
Top View
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2018 JUN
LM567/LM567C
ABSOLUTE MAXIMUM RATINGS
(1) (2) (3)
Supply Voltage Pin
Power Dissipation
V
8
V
3
V
3
Storage Temperature Range
Operating Temperature Range
LM567H
LM567CH, LM567CM, LM567CN
Soldering Information
PDIP Package
Soldering (10 sec.)
SOIC Package
Vapor Phase (60 sec.)
Infrared (15 sec.)
215°C
220°C
260°C
−55°C
to +125°C
0°C to +70°C
(4)
9V
1100 mW
15V
−10V
V
4
+ 0.5V
−65°C
to +150°C
(1)
(2)
(3)
(4)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings 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
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
Refer to RETS567X drawing for specifications of military LM567H version.
The maximum junction temperature of the LM567 and LM567C is 150°C. For operating at elevated temperatures, devices in the TO-5
package must be derated based on a thermal resistance of 150°C/W, junction to ambient or 45°C/W, junction to case. For the DIP the
device 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.
ELECTRICAL CHARACTERISTICS
AC Test Circuit, T
A
= 25°C, V
+
= 5V
Parameters
Power Supply Voltage Range
Power Supply Current Quiescent
Power Supply Current Activated
Input Resistance
Smallest Detectable Input Voltage
Largest No Output Input Voltage
Largest Simultaneous Outband Signal to
Inband Signal Ratio
Minimum Input Signal to Wideband Noise
Ratio
Largest Detection Bandwidth
Largest Detection Bandwidth Skew
Largest Detection Bandwidth Variation with
Temperature
Largest Detection Bandwidth Variation with
Supply Voltage
Highest Center Frequency
4.75–6.75V
100
B
n
= 140 kHz
12
I
L
= 100 mA, f
i
= f
o
I
C
= 100 mA, f
i
= f
o
10
R
L
= 20k
R
L
= 20k
18
Conditions
LM567
Min
4.75
Typ
5.0
6
11
20
20
15
6
−6
14
1
±0.1
±1
500
±2
100
16
2
10
25
10
Max
9.0
8
13
15
LM567C/LM567CM
Min
4.75
Typ
5.0
7
12
20
20
15
6
−6
14
2
±0.1
±1
500
±5
18
3
25
Max
9.0
10
15
Units
V
mA
mA
kΩ
mVrms
mVrms
dB
dB
% of f
o
% of f
o
%/°C
%V
kHz
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2018 JUN
LM567/LM567C
ELECTRICAL CHARACTERISTICS (continued)
AC Test Circuit, T
A
= 25°C, V
+
= 5V
Parameters
Center Frequency Stability (4.75–5.75V)
Conditions
0 < T
A
< 70
−55
< T
A
< +125
LM567
Min
Typ
35 ± 60
35 ± 140
0.5
f
o
/20
V
8
= 15V
e
i
= 25 mV, I
8
= 30 mA
e
i
= 25 mV, I
8
= 100 mA
0.01
0.2
0.6
30
150
25
0.4
1.0
1.0
2.0
Max
LM567C/LM567CM
Min
Typ
35 ± 60
35 ± 140
0.4
f
o
/20
0.01
0.2
0.6
30
150
25
0.4
1.0
µA
V
ns
ns
2.0
2.0
Max
Units
ppm/°C
ppm/°C
%/V
%/V
Center Frequency Shift with Supply Voltage 4.75V–6.75V
4.75V–9V
Fastest ON-OFF Cycling Rate
Output Leakage Current
Output Saturation Voltage
Output Fall Time
Output Rise Time
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2018 JUN
Analogue and Mixed Signal
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