Philips Semiconductors Linear Products
Product specification
Tone decoder/phase-locked loop
NE/SE567
DESCRIPTION
The NE/SE567 tone and frequency decoder is a highly stable
phase-locked loop with synchronous AM lock detection and power
output circuitry. Its primary function is to drive a load whenever a
sustained frequency within its detection band is present at the
self-biased input. The bandwidth center frequency and output delay
are independently determined by means of four external
components.
PIN CONFIGURATIONS
FE, D, N Packages
OUTPUT FILTER
CAPACITOR C3
LOW-PASS FILTER
CAPACITOR C2
INPUT
SUPPLY VOLTAGE V+
1
2
3
4
TOP VIEW
8
7
6
5
OUTPUT
GROUND
TIMING
ELEMENTS R1
AND C1
TIMING ELEMENT R1
FEATURES
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Wide frequency range (.01Hz to 500kHz)
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High stability of center frequency
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Independently controllable bandwidth (up to 14%)
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High out-band signal and noise rejection
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Logic-compatible output with 100mA current sinking capability
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Inherent immunity to false signals
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Frequency adjustment over a 20-to-1 range with an external
resistor
F Package
OUTPUT
1
C3
2
NC
3
C2
4
INPUT
5
NC
6
V
CC
7
TOP VIEW
14
GND
13
NC
12
NC
11
R1C1
10
R1
9
8
NC
NC
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Military processing available
APPLICATIONS
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Touch-Tone廬 decoding
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Carrier current remote controls
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Ultrasonic controls (remote TV, etc.)
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Communications paging
BLOCK DIAGRAM
4
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Frequency monitoring and control
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Wireless intercom
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Precision oscillator
R
2
3.9k
INPUT
V1
3
PHASE
DETECTOR
2
R
1
5
6
CURRENT
CONTROLLED
OSCILLATOR
R
3
+
QUADRATURE
PHASE
DETECTOR
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V
REF
AMP
8
AMP
C
1
LOOP
LOW
PASS
FILTER
C
2
R
L
+V
7
C
3
OUTPUT
FILTER
1
廬Touch-Tone
is a registered trademark of AT&T.
April 15, 1992
403
853-0124 06456
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