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November 1995
CD4046BM/CD4046BC Micropower Phase-Locked Loop
General Description
The CD4046B micropower phase-locked loop (PLL) con-
sists of a low power, linear, voltage-controlled oscillator
(VCO), a source follower, a zener diode, and two phase
comparators. The two phase comparators have a common
signal input and a common comparator input. The signal
input can be directly coupled for a large voltage signal, or
capacitively coupled to the self-biasing amplifier at the sig-
nal input for a small voltage signal.
Phase comparator I, an exclusive OR gate, provides a digital
error signal (phase comp. I Out) and maintains 90
§
phase
shifts at the VCO center frequency. Between signal input
and comparator input (both at 50% duty cycle), it may lock
onto the signal input frequencies that are close to harmon-
ics of the VCO center frequency.
Phase comparator II is an edge-controlled digital memory
network. It provides a digital error signal (phase comp. II
Out) and lock-in signal (phase pulses) to indicate a locked
condition and maintains a 0
§
phase shift between signal in-
put and comparator input.
The linear voltage-controlled oscillator (VCO) produces an
output signal (VCO Out) whose frequency is determined by
the voltage at the VCO
IN
input, and the capacitor and resis-
tors connected to pin C1
A
,C1
B
, R1 and R2.
The source follower output of the VCO
IN
(demodulator Out)
is used with an external resistor of 10 k
X
or more.
The INHIBIT input, when high, disables the VCO and source
follower to minimize standby power consumption. The zener
diode is provided for power supply regulation, if necessary.
Features
Y
Wide supply voltage range
3.0V to 18V
Y
Low dynamic
70
m
W (typ.) at
power consumption
f
o
e
10 kHz, V
DD
e
5V
Y
VCO frequency
1.3 MHz (typ.) at V
DD
e
10V
Y
Low frequency drift
0.06%/
§
CatV
DD
e
10V
with temperature
Y
High VCO linearity
1% (typ.)
Applications
Y
FM demodulator and modulator
Y
Frequency synthesis and multiplication
Y
Frequency discrimination
Y
Data synchronization and conditioning
Y
Voltage-to-frequency conversion
Y
Tone decoding
Y
FSK modulation
Y
Motor speed control
Block & Connection Diagrams
Dual-In-Line Package
TL/F/5968±2
Top View
Order Number CD4046B
TL/F/5968±1
FIGURE 1
C
1995 National Semiconductor Corporation
TL/F/5968
RRD-B30M115/Printed in U. S. A.
Absolute Maximum Ratings
(Notes1&2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
DC Supply Voltage (V
DD
)
b
0.5 to
a
18 V
DC
Input Voltage (V
IN
)
b
0.5 to V
DD
a
0.5 V
DC
Storage Temperature Range (T
S
)
b
65
§
Cto
a
150
§
C
Power Dissipation (P
D
)
Dual-In-Line
Recommended Operating
Conditions
(Note 2)
DC Supply Voltage (V
DD
)
3 to 15 V
DC
Input Voltage (V
IN
)
0 to V
DD
V
DC
Operating Temperature Range (T
A
)
CD4046BM
b
55
§
Cto
a
125
§
C
CD4046BC
b
40
§
Cto
a
85
§
C
700 mW
Small Outline
500 mW
Lead Temperature (T
L
)
(Soldering, 10 seconds)
260
§
C
DC Electrical Characteristics
CD4046BM (Note 2)
Symbol
Parameter
Conditions
b
55
§
C
a
25
§
C
a
125
§
C
Units
Min Max Min Typ Max Min Max
I
DD
Quiescent Device Current Pin 5
e
V
DD
, Pin 14
e
V
DD
,
Pin 3, 9
e
V
SS
V
DD
e
5V
5
0.005 5
150
m
A
V
DD
e
10V
10
0.01 10
300
m
A
V
DD
e
15V
20
0.015 20
600
m
A
Pin 5
e
V
DD
, Pin 14
e
Open,
Pin 3, 2
e
V
SS
V
DD
e
5V
45
5
35
185
m
A
V
DD
e
10V
450
20 350
650
m
A
V
DD
e
15V
1200
50 900
1500
m
A
V
OL
Low Level Output Voltage V
DD
e
5V
0.05
0 0.05
0.05 V
V
DD
e
10V
0.05
0 0.05
0.05 V
V
DD
e
15V
0.05
0 0.05
0.05 V
V
OH
High Level Output Voltage V
DD
e
5V
4.95
4.95 5
4.95
V
V
DD
e
10V
9.95
9.95 10
9.95
V
V
DD
e
15V
14.95
14.95 15
14.95
V
V
IL
Low Level Input Voltage V
DD
e
5V, V
O
e
0.5V or 4.5V
1.5
2.25 1.5
1.5 V
Comparator and Signal In V
DD
e
10V, V
O
e
1V or 9V
3.0
4.5 3.0
3.0 V
V
DD
e
15V, V
O
e
1.5V or 13.5V
4.0
6.25 4.0
4.0 V
V
IH
High Level Input Voltage V
DD
e
5V, V
O
e
0.5V or 4.5V 3.5
3.5 2.75
3.5
V
Comparator and Signal In V
DD
e
10V, V
O
e
1V or 9V
7.0
7.0 5.5
7.0
V
V
DD
e
15V, V
O
e
1.5V or 13.5V 11.0
11.0 8.25
11.0
V
I
OL
Low Level Output Current V
DD
e
5V, V
O
e
0.4V
0.64
0.51 0.88
0.36
mA
(Note 4)
V
DD
e
10V, V
O
e
0.5V
1.6
1.3 2.25
0.9
mA
V
DD
e
15V, V
O
e
1.5V
4.2
3.4 8.8
2.4
mA
I
OH
High Level Output Current V
DD
e
5V, V
O
e
4.6V
b
0.64
b
0.51
b
0.88
b
0.36
mA
(Note 4)
V
DD
e
10V, V
O
e
9.5V
b
1.6
b
1.3
b
2.25
b
0.9
mA
V
DD
e
15V, V
O
e
13.5V
b
4.2
b
3.4
b
8.8
b
2.4
mA
I
IN
Input Current
All Inputs Except Signal Input
V
DD
e
14V, V
IN
e
0V
b
0.1
b
10
b
5
b
0.1
b
1.0
m
A
V
DD
e
15V, V
IN
e
15V
0.1
10
b
5
0.1
1.0
m
A
C
IN
Input Capacitance
Any Input (Note 3)
7.5 pF
P
T
Total Power Dissipation f
o
e
10 kHz, R1
e
1M
X
R2
e
%
, VCO
IN
e
V
DD
/2
V
DD
e
5V
0.07
mW
V
DD
e
10V
0.6
mW
V
DD
e
15V
2.4
mW
2
DC Electrical Characteristics
CD4046BC (Note 2)
Symbol
Parameter
Conditions
b
40
§
C
a
25
§
C
a
85
§
C
Units
Min Max Min Typ Max Min Max
I
DD
Quiescent Device Current Pin 5
e
V
DD,
Pin 14
e
V
DD,
Pin 3, 9
e
V
SS
V
DD
e
5V
20
0.005 20
150
m
A
V
DD
e
10V
40
0.01 40
300
m
A
V
DD
e
15V
80
0.015 80
600
m
A
Pin 5
e
V
DD
, Pin 14
e
Open,
Pin 3, 9
e
V
SS
V
DD
e
5V
70
5
55
205
m
A
V
DD
e
10V
530
20 410
710
m
A
V
DD
e
15V
1500
50 1200
1800
m
A
V
OL
Low Level Output Voltage V
DD
e
5V
0.05
0 0.05
0.05 V
V
DD
e
10V
0.05
0 0.05
0.05 V
V
DD
e
15V
0.05
0 0.05
0.05 V
V
OH
High Level Output Voltage V
DD
e
5V
4.95
4.95 5
4.95
V
V
DD
e
10V
9.95
9.95 10
9.95
V
V
DD
e
15V
14.95
14.95 15
14.95
V
V
IL
Low Level Input Voltage V
DD
e
5V, V
O
e
0.5V or 4.5V
1.5
2.25 1.5
1.5 V
Comparator and Signal In V
DD
e
10V, V
O
e
1V or 9V
3.0
4.5 3.0
3.0 V
V
DD
e
15V, V
O
e
1.5V or 13.5V
4.0
6.25 4.0
4.0 V
V
IH
High Level Input Voltage V
DD
e
5V, V
O
e
0.5V or 4.5V 3.5
3.5 2.75
3.5
V
Comparator and Signal In V
DD
e
10V, V
O
e
1V or 9V
7.0
7.0 5.5
7.0
V
V
DD
e
15V, V
O
e
1.5V or 13.5V 11.0
11.0 8.25
11.0
V
I
OL
Low Level Output Current V
DD
e
5V, V
O
e
0.4V
0.52
0.44 0.88
0.36
mA
(Note 4)
V
DD
e
10V, V
O
e
0.5V
1.3
1.1 2.25
0.9
mA
V
DD
e
15V, V
O
e
1.5V
3.6
3.0 8.8
2.4
mA
I
OH
High Level Output Current V
DD
e
5V, V
O
e
4.6V
b
0.52
b
0.44
b
0.88
b
0.36
mA
(Note 4)
V
DD
e
10V, V
O
e
9.5V
b
1.3
b
1.1
b
2.25
b
0.9
mA
V
DD
e
15V, V
O
e
13.5V
b
3.6
b
3.0
b
8.8
b
2.4
mA
I
IN
Input Current
All Inputs Except Signal Input
V
DD
e
15V, V
IN
e
0V
b
0.3
b
10
b
5
b
0.3
b
1.0
m
A
V
DD
e
15V, V
IN
e
15V
0.3
10
b
5
0.3
1.0
m
A
C
IN
Input Capacitance
Any Input (Note 3)
7.5
pF
P
T
Total Power Dissipation f
o
e
10 kHz, R1
e
1M
X
,
R2
e
%
, VCO
IN
e
V
DD
/2
V
DD
e
5V 0.07 mW
V
DD
e
10V 0.6 mW
V
DD
e
15V 2.4 mW
Note 1: ``Absolute Maximum Ratings'' are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices
should be operated at these limits. The table of ``Recommended Operating Conditions'' and ``Electrical Characteristics'' provides conditions for actual device
operation.
Note 2: V
SS
e
0V unless otherwise specified.
Note 3: Capacitance is guaranteed by periodic testing.
Note 4: I
OH
and I
OL
are tested one output at a time.
3
AC Electrical Characteristics*
CD4046BM/CD4046BC T
A
e
25
§
C, C
L
e
50 pF
Symbol
Parameter
Conditions
Min
Typ
Max Units
VCO SECTION
I
DD
Operating Current
f
o
e
10 kHz, R1
e
1M
X
,
R2
e
%
, VCO
IN
e
V
DD
/2
V
DD
e
5V
20
m
A
V
DD
e
10V
90
m
A
V
DD
e
15V
200
m
A
f
MAX
Maximum Operating Frequency
C1
e
50 pF, R1
e
10 k
X
,
R2
e
%
, VCO
IN
e
V
DD
V
DD
e
5V
0.4
0.8
MHz
V
DD
e
10V
0.6
1.2
MHz
V
DD
e
15V
1.0
1.6
MHz
Linearity
VCO
IN
e
2.5V
g
0.3V,
R1
t
10 k
X
,V
DD
e
5V
1
%
VCO
IN
e
5V
g
2.5V,
R1
t
400 k
X
,V
DD
e
10V
1
%
VCO
IN
e
7.5V
g
5V,
R1
t
1M
X
,V
DD
e
15V
1
%
Temperature-Frequency Stability %/
§
C
*
1/f. V
DD
No Frequency Offset, f
MIN
e
0 2
e
%
DD
e
5V
0.12±0.24
%/
§
C
V
DD
e
10V
0.04±0.08
%/
§
C
V
DD
e
15V
0.015±0.03
%/
§
C
Frequency Offset, f
MIN
i
0
V
DD
e
5V
0.06±0.12
%/
§
C
V
DD
e
10V
0.05±0.1
%/
§
C
V
DD
e
15V
0.03±0.06
%/
§
C
VCO
IN
Input Resistance
V
DD
e
5V
10
6
M
X
V
DD
e
10V
10
6
M
X
V
DD
e
15V
10
6
M
X
VCO
Output Duty Cycle
V
DD
e
5V
50
%
V
DD
e
10V
50
%
V
DD
e
15V
50
%
t
THL
VCO Output Transition Time
V
DD
e
5V
90
200
ns
t
THL
V
DD
e
10V
50
100
ns
V
DD
e
15V
45
80
ns
*AC Parameters are guaranteed by DC correlated testing.
4
AC Electrical Characteristics*
CD4046BM/CD4046BC T
A
e
25
§
C, C
L
e
50 pF (Continued)
Symbol
Parameter
Conditions
Min Typ Max Units
PHASE COMPARATORS SECTION
R
IN
Input Resistance
Signal Input
V
DD
e
5V
1
3
M
X
V
DD
e
10V
0.2
0.7
M
X
V
DD
e
15V
0.1
0.3
M
X
Comparator Input
V
DD
e
5V
10
6
M
X
V
DD
e
10V
10
6
M
X
V
DD
e
15V
10
6
M
X
AC-Coupled Signal Input Voltage C
SERIES
e
1000 pF
Sensitivity
f
e
50 kHz
V
DD
e
5V
200
400 mV
V
DD
e
10V
400
800 mV
V
DD
e
15V
700 1400 mV
DEMODULATOR OUTPUT
VCO
IN
b
Offset Voltage
RS
t
10 k
X
,V
DD
e
5V
1.50
2.2
V
V
DEM
RS
t
10 k
X
,V
DD
e
10V
1.50
2.2
V
RS
t
50 k
X
,V
DD
e
15V
1.50
2.2
V
Linearity
RS
t
50 k
X
VCO
IN
e
2.5V
g
0.3V, V
DD
e
5V
0.1
%
VCO
IN
e
5V
g
2.5V, V
DD
e
10V
0.6
%
VCO
IN
e
7.5V
g
5V, V
DD
e
15V
0.8
%
ZENER DIODE
V
Z
Zener Diode Voltage
I
Z
e
50
m
A
6.3
7.0
7.7
V
R
Z
Zener Dynamic Resistance
I
Z
e
1 mA
100
X
*AC Parameters are guaranteed by DC correlated testing.
5
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