ETC CD74HC4046ANSR96

[ /Title
(CD74
HC404
6A,
CD74
HCT40
46A)
/Subject
(HighSpeed
CMOS
CD54/74HC4046A,
CD54/74HCT4046A
Data sheet acquired from Harris Semiconductor
SCHS204B
High-Speed CMOS Logic
Phase-Locked-Loop with VCO
February 1998 - Revised March 2002
Features
Description
• Operating Frequency Range
- Up to 18MHz (Typ) at VCC = 5V
- Minimum Center Frequency of 12MHz at VCC = 4.5V
The ’HC4046A and ’HCT4046A are high-speed silicon-gate
CMOS devices that are pin compatible with the CD4046B of
the “4000B” series. They are specified in compliance with
JEDEC standard number 7.
• Choice of Three Phase Comparators
- EXCLUSIVE-OR
- Edge-Triggered JK Flip-Flop
- Edge-Triggered RS Flip-Flop
The ’HC4046A and ’HCT4046A are phase-locked-loop circuits that contain a linear voltage-controlled oscillator (VCO)
and three different phase comparators (PC1, PC2 and PC3).
A signal input and a comparator input are common to each
comparator.
• Excellent VCO Frequency Linearity
The signal input can be directly coupled to large voltage signals, or indirectly coupled (with a series capacitor) to small
voltage signals. A self-bias input circuit keeps small voltage
signals within the linear region of the input amplifiers. With a
passive low-pass filter, the 4046A forms a second-order loop
PLL. The excellent VCO linearity is achieved by the use of linear op-amp techniques.
• VCO-Inhibit Control for ON/OFF Keying and for Low
Standby Power Consumption
• Minimal Frequency Drift
• Operating Power Supply Voltage Range
- VCO Section . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 6V
- Digital Section . . . . . . . . . . . . . . . . . . . . . . . . 2V to 6V
Ordering Information
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
PART NUMBER
TEMP. RANGE
(oC)
PACKAGE
CD54HC4046AF
-55 to 125
16 Ld CERDIP
CD54HC4046AF3A
-55 to 125
16 Ld CERDIP
• Balanced Propagation Delay and Transition Times
CD74HC4046AE
-55 to 125
16 Ld PDIP
• Significant Power Reduction Compared to LSTTL
Logic ICs
CD74HC4046AM
-55 to 125
16 Ld SOIC
CD74HC4046ANSR
-55 to 125
16 Ld SOP
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC
at VCC = 5V
CD54HCT4046AF3A
-55 to 125
16 Ld CERDIP
• Wide Operating Temperature Range . . . -55oC to 125oC
CD74HCT4046AE
-55 to 125
16 Ld PDIP
CD74HCT4046AM
-55 to 125
16 Ld SOIC
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die for this part number is available which meets all
electrical specifications. Please contact your local TI sales office
or customer service for ordering information.
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH
Applications
• FM Modulation and Demodulation
• Frequency Synthesis and Multiplication
• Frequency Discrimination
• Tone Decoding
• Data Synchronization and Conditioning
• Voltage-to-Frequency Conversion
• Motor-Speed Control
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© 2002, Texas Instruments Incorporated
1
CD54/74HC4046A, CD54/74HCT4046A
Pinout
CD54HC4046A, CD54HCT4046A (CERDIP)
CD74HC4046A (PDIP, SOIC, SOP)
CD74HCT4046A (PDIP, SOIC)
TOP VIEW
PCPOUT 1
16 VCC
PC1OUT 2
15 PC3OUT
COMPIN 3
14 SIGIN
VCOOUT 4
13 PC2OUT
INH 5
12 R2
C1A 6
11 R1
C1B 7
10 DEMOUT
9 VCOIN
GND 8
Functional Diagram
2
PC1OUT
3
COMPIN
15
14
φ
SIGIN
PC3OUT
13
PC2OUT
1
PCPOUT
6
C1A
C1B
R1
R2
VCOIN
7
4
11
12
VCOOUT
VCO
10
9
DEMOUT
5
INH
Pin Descriptions
PIN NUMBER
SYMBOL
NAME AND FUNCTION
1
PCPOUT
Phase Comparator Pulse Output
2
PC1OUT
Phase Comparator 1 Output
3
COMPIN
Comparator Input
4
VCOOUT
VCO Output
5
INH
Inhibit Input
6
C1A
Capacitor C1 Connection A
7
C1B
Capacitor C1 Connection B
8
GND
Ground (0V)
9
VCOIN
10
DEMOUT
11
R1
Resistor R1 Connection
12
R2
Resistor R2 Connection
13
PC2OUT
14
SIGIN
15
PC3OUT
16
VCC
VCO Input
Demodulator Output
Phase Comparator 2 Output
Signal Input
Phase Comparator 3 Output
Positive Supply Voltage
2
CD54/74HC4046A, CD54/74HCT4046A
C1
7 4
C1A
C1B
3
14
SIGIN
COMPIN
+
VREF
VCOOUT
6
12 R2
SD
-
R2
PC1OUT
2
PC3OUT
15
Q
VCO
Q
RD
11 R1
R1
+
VCC
VCC
-
D
10
R5
DEMOUT
-
Q
UP
p
CP Q
RD
+
13
PC2OUT
R3
C2
n
VCC
D
Q
CP
Q
RD
INH
VCOIN
5
9
GND
DOWN
1
PCPOUT
FIGURE 1. LOGIC DIAGRAM
General Description
VCO
Phase Comparators
The VCO requires one external capacitor C1 (between C1A
and C1B) and one external resistor R1 (between R1 and
GND) or two external resistors R1 and R2 (between R1 and
GND, and R2 and GND). Resistor R1 and capacitor C1
determine the frequency range of the VCO. Resistor R2
enables the VCO to have a frequency offset if required. See
logic diagram, Figure 1.
The signal input (SIGIN) can be directly coupled to the selfbiasing amplifier at pin 14, provided that the signal swing is
between the standard HC family input logic levels. Capacitive coupling is required for signals with smaller swings.
Phase Comparator 1 (PC1)
This is an Exclusive-OR network. The signal and comparator
input frequencies (fi) must have a 50% duty factor to obtain
the maximum locking range. The transfer characteristic of
PC1, assuming ripple (fr = 2fi) is suppressed, is:
The high input impedance of the VCO simplifies the design
of low-pass filters by giving the designer a wide choice of
resistor/capacitor ranges. In order not to load the low-pass
filter, a demodulator output of the VCO input voltage is provided at pin 10 (DEMOUT). In contrast to conventional techniques where the DEMOUT voltage is one threshold voltage
lower than the VCO input voltage, here the DEMOUT voltage
equals that of the VCO input. If DEMOUT is used, a load
resistor (RS) should be connected from DEMOUT to GND; if
unused, DEMOUT should be left open. The VCO output
(VCOOUT) can be connected directly to the comparator
input (COMPIN), or connected via a frequency-divider. The
VCO output signal has a guaranteed duty factor of 50%. A
LOW level at the inhibit input (INH) enables the VCO and
demodulator, while a HIGH level turns both off to minimize
standby power consumption.
VDEMOUT = (VCC/π) (φSIGIN - φCOMPIN) where VDEMOUT
is the demodulator output at pin 10; VDEMOUT = VPC1OUT
(via low-pass filter).
The average output voltage from PC1, fed to the VCO input
via the low-pass filter and seen at the demodulator output at
pin 10 (VDEMOUT), is the resultant of the phase differences
of signals (SIGIN) and the comparator input (COMPIN) as
shown in Figure 2. The average of VDEM is equal to 1/2 VCC
when there is no signal or noise at SIGIN, and with this input
the VCO oscillates at the center frequency (fo). Typical waveforms for the PC1 loop locked at fo are shown in Figure 3.
3
CD54/74HC4046A, CD54/74HCT4046A
VDEMOUT = (VCC/4π) (φSIGIN - φCOMPIN) where VDEMOUT is the demodulator output at pin 10; VDEMOUT =
VPC2OUT (via low-pass filter).
The frequency capture range (2fC) is defined as the frequency range of input signals on which the PLL will lock if it
was initially out-of-lock. The frequency lock range (2fL) is
defined as the frequency range of input signals on which the
loop will stay locked if it was initially in lock. The capture
range is smaller or equal to the lock range.
The average output voltage from PC2, fed to the VCO via the
low-pass filter and seen at the demodulator output at pin 10
(VDEMOUT), is the resultant of the phase differences of
SIGIN and COMPIN as shown in Figure 4. Typical waveforms
for the PC2 loop locked at fo are shown in Figure 5.
With PC1, the capture range depends on the low-pass filter
characteristics and can be made as large as the lock range.
This configuration retains lock behavior even with very noisy
input signals. Typical of this type of phase comparator is that
it can lock to input frequencies close to the harmonics of the
VCO center frequency.
VCC
VDEMOUT (AV)
VCC
1/2 VCC
VDEMOUT (AV)
1/2 VCC
0
-360o
90o
φDEMOUT
φDEMOUT
360o
FIGURE 4. PHASE COMPARATOR 2: AVERAGE OUTPUT
VOLTAGE vs INPUT PHASE DIFFERENCE:
VDEMOUT = VPC2OUT = (VCC/4π) (φSIGIN - φCOMPIN); φDEMOUT = (φSIGIN - φCOMPIN)
0
0o
0o
180o
FIGURE 2. PHASE COMPARATOR 1: AVERAGE OUTPUT
VOLTAGE vs INPUT PHASE DIFFERENCE:
VDEMOUT = VPC1OUT = (VCC/π) (φSIGIN - φCOMPIN); φDEMOUT = (φSIGIN - φCOMPIN)
SIGIN
COMPIN
VCOOUT
VCC
PC2OUT
SIGIN
GND
HIGH IMPEDANCE OFF - STATE
COMPIN
VCOIN
VCOOUT
PCPOUT
PC1OUT
FIGURE 5. TYPICAL WAVEFORMS FOR PLL USING PHASE
COMPARATOR 2, LOOP LOCKED AT fo
VCC
VCOIN
GND
Phase Comparator 2 (PC2)
When the frequencies of SIGIN and COMPIN are equal but
the phase of SIGIN leads that of COMPIN, the p-type output
driver at PC2OUT is held “ON” for a time corresponding to
the phase difference (φDEMOUT). When the phase of SIGIN
lags that of COMPIN, the n-type driver is held “ON”.
This is a positive edge-triggered phase and frequency detector. When the PLL is using this comparator, the loop is controlled by positive signal transitions and the duty factors of
SIGIN and COMPIN are not important. PC2 comprises two
D-type flip-flops, control-gating and a three-state output
stage. The circuit functions as an up-down counter (Figure
1) where SIGIN causes an up-count and COMPIN a downcount. The transfer function of PC2, assuming ripple (fr = fi)
is suppressed, is:
When the frequency of SIGIN is higher than that of COMPIN,
the p-type output driver is held “ON” for most of the input signal cycle time, and for the remainder of the cycle both n- and
p-type drivers are “OFF” (three-state). If the SIGIN frequency
is lower than the COMPIN frequency, then it is the n-type
driver that is held “ON” for most of the cycle. Subsequently,
the voltage at the capacitor (C2) of the low-pass filter connected to PC2OUT varies until the signal and comparator
inputs are equal in both phase and frequency. At this stable
FIGURE 3. TYPICAL WAVEFORMS FOR PLL USING PHASE
COMPARATOR 1, LOOP LOCKED AT fo
4
CD54/74HC4046A, CD54/74HCT4046A
point the voltage on C2 remains constant as the PC2 output
is in three-state and the VCO input at pin 9 is a high impedance. Also in this condition, the signal at the phase comparator pulse output (PCPOUT) is a HIGH level and so can be
used for indicating a locked condition.
VCC
VDEMOUT (AV)
Thus, for PC2, no phase difference exists between SIGIN
and COMPIN over the full frequency range of the VCO.
Moreover, the power dissipation due to the low-pass filter is
reduced because both p- and n-type drivers are “OFF” for
most of the signal input cycle. It should be noted that the
PLL lock range for this type of phase comparator is equal to
the capture range and is independent of the low-pass filter.
With no signal present at SIGIN, the VCO adjusts, via PC2,
to its lowest frequency.
1/2 VCC
0
0o
Phase Comparator 3 (PC3)
180o
φDEMOUT
360o
FIGURE 6. PHASE COMPARATOR 3: AVERAGE OUTPUT
VOLTAGE vs INPUT PHASE DIFFERENCE:
VDEMOUT = VPC3OUT = (VCC/2π) (φSIGIN - φCOMPIN); φDEMOUT = (φSIGIN - φCOMPIN)
This is a positive edge-triggered sequential phase detector using an RS-type flip-flop. When the PLL is using this
comparator, the loop is controlled by positive signal transitions and the duty factors of SIGIN and COMPIN are not
important. The transfer characteristic of PC3, assuming
ripple (fr = fi) is suppressed, is:
VDEMOUT = (VCC/2p) (fSIGIN - fCOMPIN) where VDEMOUT is the demodulator output at pin 10; VDEMOUT =
VPC3OUT (via low-pass filter).
SIGIN
COMPIN
VCOOUT
The average output from PC3, fed to the VCO via the lowpass filter and seen at the demodulator at pin 10 (VDEMOUT), is the resultant of the phase differences of SIGIN
and COMPIN as shown in Figure 6. Typical waveforms for
the PC3 loop locked at fo are shown in Figure 7.
PC3OUT
VCOIN
VCC
GND
The phase-to-output response characteristic of PC3 (Figure
6) differs from that of PC2 in that the phase angle between
SIGIN and COMPIN varies between 0o and 360o and is 180o
at the center frequency. Also PC3 gives a greater voltage
swing than PC2 for input phase differences but as a consequence the ripple content of the VCO input signal is higher.
With no signal present at SIGIN, the VCO adjusts, via PC3,
to its highest frequency.
FIGURE 7. TYPICAL WAVEFORMS FOR PLL USING PHASE
COMPARATOR 3, LOOP LOCKED AT fo
The only difference between the HC and HCT versions is the
input level specification of the INH input. This input disables
the VCO section. The comparator’s sections are identical, so
that there is no difference in the SIGIN (pin 14) or COMPIN
(pin 3) inputs between the HC and the HCT versions.
5
CD54/74HC4046A, CD54/74HCT4046A
Absolute Maximum Ratings
Thermal Information
DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA
DC Drain Current, per Output, IO
For -0.5V < VO < VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . . . . . .±25mA
DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA
DC VCC or Ground Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . .±50mA
Package Thermal Impedance, θJA (see Note 3):
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67oC/W
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73oC/W
SOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64oC/W
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)
Operating Conditions
Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
Supply Voltage Range, VCC
HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V
HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC
Input Rise and Fall Time
2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max)
4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max)
6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max)
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
3. The package thermal impedance is calculated in accordance with JESD 51-7.
DC Electrical Specifications
TEST
CONDITIONS
PARAMETER
25oC
-40oC TO 85oC -55oC TO 125oC
SYMBOL
VI (V)
IO (mA)
VCC
(V)
VIH
-
-
3
2.1
-
-
2.1
4.5
3.15
-
-
3.15
-
3.15
-
V
6
4.2
-
-
4.2
-
4.2
-
V
3
-
-
0.9
-
0.9
-
0.9
V
4.5
-
-
1.35
-
1.35
-
1.35
V
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
-
2.1
-
V
HC TYPES
VCO SECTION
INH High Level Input
Voltage
INH Low Level Input
Voltage
VIL
VCOOUT High Level
Output Voltage
CMOS Loads
VOH
-
VIH or VIL
VCOOUT High Level
Output Voltage
TTL Loads
VCOOUT Low Level
Output Voltage
CMOS Loads
VOL
VIH or VIL
VCOOUT Low Level
Output Voltage
TTL Loads
C1A, C1B Low Level
Output Voltage
(Test Purposes Only)
VOL
VIL or VIH
-
6
-
-
1.8
-
1.8
-
1.8
V
-0.02
3
2.9
-
-
2.9
-
2.9
-
V
-0.02
4.5
4.4
-
-
4.4
-
4.4
-
V
-0.02
6
5.9
-
-
5.9
-
5.9
-
V
-
-
-
-
-
-
-
-
-
V
-4
4.5
3.98
-
-
3.84
-
3.7
-
V
-5.2
6
5.48
-
-
5.34
-
5.2
-
V
0.02
2
-
-
0.1
-
0.1
-
0.1
V
0.02
4.5
-
-
0.1
-
0.1
-
0.1
V
0.02
6
-
-
0.1
-
0.1
-
0.1
V
-
-
-
-
-
-
-
-
-
V
4
4.5
-
-
0.26
-
0.33
-
0.4
V
5.2
6
-
-
0.26
-
0.33
-
0.4
V
4
4.5
-
-
0.40
-
0.47
-
0.54
V
5.2
6
-
-
0.40
-
0.47
-
0.54
V
6
CD54/74HC4046A, CD54/74HCT4046A
DC Electrical Specifications
(Continued)
TEST
CONDITIONS
25oC
-40oC TO 85oC -55oC TO 125oC
SYMBOL
VI (V)
IO (mA)
VCC
(V)
INH VCOIN Input
Leakage Current
II
VCC or
GND
-
6
-
-
±0.1
-
±1
-
±1
µA
R1 Range (Note 4)
-
-
-
4.5
3
-
300
-
-
-
-
kΩ
R2 Range (Note 4)
-
-
-
4.5
3
-
300
-
-
-
-
kΩ
C1 Capacitance
Range
-
-
-
3
-
-
-
-
-
pF
-
-
No
Limit
-
4.5
-
-
-
-
pF
VCOIN Operating
Voltage Range
-
PARAMETER
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
6
-
-
-
-
-
-
pF
3
1.1
-
1.9
-
-
-
-
V
4.5
1.1
-
3.2
-
-
-
-
V
6
1.1
-
4.6
-
-
-
-
V
2
1.5
-
-
1.5
-
1.5
-
V
4.5
3.15
-
-
3.15
-
3.15
-
V
6
4.2
-
-
4.2
-
4.2
-
V
2
-
-
0.5
-
0.5
-
0.5
V
4.5
-
-
1.35
-
1.35
-
1.35
V
6
-
-
1.8
-
1.8
-
1.8
V
2
1.9
-
-
1.9
-
1.9
-
V
4.5
4.4
-
-
4.4
-
4.4
-
V
6
5.9
-
-
5.9
-
5.9
-
V
-4
4.5
3.98
-
-
3.84
-
3.7
-
V
-5.2
6
5.48
-
-
5.34
-
5.2
-
V
0.02
2
-
-
0.1
-
0.1
-
0.1
V
4.5
-
-
0.1
-
0.1
-
0.1
V
6
-
-
0.1
-
0.1
-
0.1
V
4
4.5
-
-
0.26
-
0.33
-
0.4
V
5.2
6
-
-
0.26
-
0.33
-
0.4
V
-
2
-
-
±3
-
±4
-
±5
µA
Over the range
specified for R1 for
Linearity See Figure
10, and 35 - 38
(Note 5)
PHASE COMPARATOR SECTION
SIGIN, COMPIN
DC Coupled
High-Level Input
Voltage
VIH
SIGIN, COMPIN
DC Coupled
Low-Level Input
Voltage
VIL
PCPOUT, PCn OUT
High-Level Output
Voltage
CMOS Loads
VOH
PCPOUT, PCn OUT
High-Level Output
Voltage
TTL Loads
VOH
PCPOUT, PCn OUT
Low-Level Output
Voltage
CMOS Loads
VOL
PCPOUT, PCn OUT
Low-Level Output
Voltage
TTL Loads
VOL
SIGIN, COMPIN Input
Leakage Current
II
PC2OUT Three-State
Off-State Current
IOZ
SIGIN, COMPIN Input
Resistance
RI
-
-
VIL or VIH
VIL or VIH
VIL or VIH
VIL or VIH
VCC or
GND
VIL or VIH
-
-
-0.02
-
3
-
-
±7
-
±9
-
±11
µA
4.5
-
-
±18
-
±23
-
±29
µA
6
-
-
±30
-
±38
-
±45
µA
6
-
-
±0.5
-
±5
-
±10
µA
VI at Self-Bias
Operation Point:
∆VI, 0.5V,
See Figure 10
3
-
800
-
-
-
-
-
kΩ
4.5
-
250
-
-
-
-
-
kΩ
6
-
150
-
-
-
-
-
kΩ
at RS > 300kΩ
Leakage Current
Can Influence
VDEMOUT
3
50
-
300
-
-
-
-
kΩ
4.5
50
-
300
-
-
-
-
kΩ
6
50
-
300
-
-
-
-
kΩ
DEMODULATOR SECTION
Resistor Range
RS
7
CD54/74HC4046A, CD54/74HCT4046A
DC Electrical Specifications
(Continued)
TEST
CONDITIONS
PARAMETER
SYMBOL
Offset Voltage VCOIN
to VDEM
VOFF
Dynamic Output
Resistance at
DEMOUT
RD
Quiescent Device
Current
ICC
VI (V)
IO (mA)
VI = VVCO IN =
VCC
2
Values Taken Over
RS Range
See Figure 24
VDEMOUT =
VCC
2
Pins 3, 5 and 14
at VCC Pin 9 at
GND, I1 at Pins 3
and 14 to be
excluded
25oC
-40oC TO 85oC -55oC TO 125oC
VCC
(V)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
3
-
±30
-
-
-
-
-
mV
4.5
-
±20
-
-
-
-
-
mV
6
-
±10
-
-
-
-
-
mV
3
-
25
-
-
-
-
-
Ω
4.5
-
25
-
-
-
-
-
Ω
6
-
25
-
-
-
-
-
Ω
6
-
-
8
-
80
-
160
µA
HCT TYPES
VCO SECTION
INH High Level Input
Voltage
VIH
-
-
4.5 to
5.5
2
-
-
2
-
2
-
V
INH Low Level Input
Voltage
VIL
-
-
4.5 to
5.5
-
-
0.8
-
0.8
-
0.8
V
VCOOUT High Level
Output Voltage
CMOS Loads
VOH
VIH or VIL
-0.02
4.5
4.4
-
-
4.4
-
4.4
-
V
-4
4.5
3.98
-
-
3.84
-
3.7
-
V
0.02
4.5
-
-
0.1
-
0.1
-
0.1
V
4
4.5
-
-
0.26
-
0.33
-
0.4
V
4
4.5
-
-
0.40
-
0.47
-
0.54
V
5.5
-
±0.1
-
±1
-
±1
µA
VCOOUT High Level
Output Voltage
TTL Loads
VCOOUT Low Level
Output Voltage
CMOS Loads
VOL
VIH or VIL
VCOOUT Low Level
Output Voltage
TTL Loads
C1A, C1B Low Level
Output Voltage
(Test Purposes Only)
VOL
VIH or VIL
INH VCOIN Input
Leakage Current
II
Any Voltage
Between VCC and
GND
R1 Range (Note 4)
-
-
-
4.5
3
-
300
-
-
-
-
kΩ
R2 Range (Note 4)
-
-
-
4.5
3
-
300
-
-
-
-
kΩ
C1 Capacitance
Range
-
-
-
4.5
0
-
No
Limit
-
-
-
-
pF
VCOIN Operating
Voltage Range
-
4.5
1.1
-
3.2
-
-
-
-
V
4.5 to
5.5
2
-
-
2
-
2
-
V
Over the range
specified for R1 for
Linearity See Figure
10, and 35 - 38
(Note 5)
PHASE COMPARATOR SECTION
SIGIN, COMPIN
DC Coupled
High-Level Input
Voltage
VIH
-
-
8
CD54/74HC4046A, CD54/74HCT4046A
DC Electrical Specifications
(Continued)
TEST
CONDITIONS
PARAMETER
SYMBOL
VI (V)
IO (mA)
SIGIN, COMPIN
DC Coupled
Low-Level Input
Voltage
VIL
-
-
PCPOUT, PCn OUT
High-Level Output
Voltage
CMOS Loads
VOH
VIL or VIH
PCPOUT, PCn OUT
High-Level Output
Voltage
TTL Loads
VOH
PCPOUT, PCn OUT
Low-Level Output
Voltage
CMOS Loads
PCPOUT, PCn OUT
Low-Level Output
Voltage
TTL Loads
VCC
(V)
25oC
-40oC TO 85oC -55oC TO 125oC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
4.5 to
5.5
-
-
0.8
-
0.8
-
0.8
V
-
4.5
4.4
-
-
4.4
-
4.4
-
V
VIL or VIH
-
4.5
3.98
-
-
3.84
-
3.7
-
V
VOL
VIL or VIH
-
4.5
-
-
0.1
-
0.1
-
0.1
V
VOL
VIL or VIH
-
4.5
-
-
0.26
-
0.33
-
0.4
V
SIGIN, COMPIN Input
Leakage Current
II
Any
Voltage
Between
VCC and
GND
-
5.5
-
-
±30
±45
µA
PC2OUT Three-State
Off-State Current
IOZ
VIL or VIH
-
5.5
-
-
±0.5
±5
-
-
±10
µA
SIGIN, COMPIN Input
Resistance
RI
VI at Self-Bias
Operation Point:
∆VI, 0.5V,
See Figure 10
4.5
-
250
-
-
-
-
-
kΩ
at RS > 300kΩ
Leakage Current
Can Influence
VDEM OUT
4.5
5
-
300
-
-
-
-
kΩ
VI = VVCO IN =
VCC
2
Values taken over
RS Range
See Figure 24
4.5
-
±20
-
-
-
-
-
mV
VDEM OUT =
VCC
2
4.5
-
25
-
-
-
-
-
Ω
±38
DEMODULATOR SECTION
Resistor Range
Offset Voltage VCOIN
to VDEM
RS
VOFF
Dynamic Output
Resistance at
DEMOUT
RD
Quiescent Device
Current
ICC
VCC or
GND
-
5.5
-
-
8
-
80
-
160
µA
∆ICC
Note 6
VCC
-2.1
Excluding
Pin 5
-
4.5 to
5.5
-
100
360
-
450
-
490
µA
Additional Quiescent
Device Current Per
Input Pin: 1 Unit Load
NOTES:
4. The value for R1 and R2 in parallel should exceed 2.7kΩ.
5. The maximum operating voltage can be as high as VCC -0.9V, however, this may result in an increased offset voltage.
6. For dual-supply systems theoretical worst case (VI = 2.4V, VCC = 5.5V) specification is 1.8mA.
9
CD54/74HC4046A, CD54/74HCT4046A
HCT Input Loading Table
INPUT
UNIT LOADS
INH
1
NOTE: Unit load is ∆ICC limit specific in DC Electrical Specifications
Table, e.g., 360µA max. at 25oC.
Switching Specifications
PARAMETER
CL = 50pF, Input tr, tf = 6ns
SYMBOL
TEST
CONDITIONS
-40oC TO
85oC
25oC
-55oC TO
125oC
VCC (V)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
2
-
-
200
-
250
-
300
ns
4.5
-
-
40
-
50
-
60
ns
6
-
-
34
-
43
-
51
ns
2
-
-
300
-
375
-
450
ns
4.5
-
-
60
-
75
-
90
ns
6
-
-
51
-
64
-
77
ns
2
-
-
245
-
305
-
307
ns
4.5
-
-
49
-
61
-
74
ns
6
-
-
42
-
52
-
63
ns
2
-
-
75
-
95
-
110
ns
4.5
-
-
15
-
19
-
22
ns
6
-
-
13
-
16
-
19
ns
2
-
-
265
-
330
-
400
ns
4.5
-
-
53
-
66
-
80
ns
6
-
-
45
-
56
-
68
ns
2
-
-
315
-
395
-
475
ns
4.5
-
-
63
-
79
-
95
ns
6
-
-
54
-
67
-
81
ns
HC TYPES
PHASE COMPARATOR SECTION
Propagation Delay
SIGIN, COMPIN to PCIOUT
tPLH, tPHL
SIGIN, COMPIN to PCPOUT
SIGIN, COMPIN to PC3OUT
Output Transition Time
Output Enable Time, SIGIN,
COMPIN to PC2OUT
Output Disable Time, SIGIN,
COMPIN to PC2OUT
tTHL, tTLH
tPZH, tPZL
tPHZ, tPLZ
AC Coupled Input Sensitivity (PP) at SIGIN or COMPIN
VI(P-P)
3
-
11
-
-
-
-
-
mV
4.5
-
15
-
-
-
-
-
mV
6
-
33
-
-
-
-
-
mV
3
-
-
-
-
%/oC
4.5
-
-
-
-
%/oC
6
-
-
-
-
%/oC
3
-
24
-
-
-
-
-
MHz
4.5
-
24
-
-
-
-
-
MHz
6
-
24
-
-
-
-
-
MHz
3
-
38
-
-
-
-
-
MHz
4.5
-
38
-
-
-
-
-
MHz
6
-
38
-
-
-
-
-
MHz
VCO SECTION
Frequency Stability with
Temperature Change
Maximum Frequency
∆f
∆T
fMAX
R1 = 100kΩ,
R2 = ∞
C1 = 50pF
R1 = 3.5kΩ
R2 = ∞
C1 = 0pF
R1 = 9.1kΩ
R2 = ∞
10
TYP
0.11
CD54/74HC4046A, CD54/74HCT4046A
Switching Specifications
PARAMETER
CL = 50pF, Input tr, tf = 6ns (Continued)
SYMBOL
Center Frequency
Frequency Linearity
TEST
CONDITIONS
C1 = 40pF
R1 = 3kΩ
R2 = ∞
VCOIN =
VCC/2
∆fVCO
Offset Frequency
R1 = 100kΩ
R2 = ∞
C1 = 100pF
R2 = 220kΩ
C1 = 1nF
-40oC TO
85oC
25oC
VCC (V)
MIN
TYP
MAX
MIN
MAX
-55oC TO
125oC
MIN
MAX
UNITS
3
7
10
-
-
-
-
-
MHz
4.5
12
17
-
-
-
-
-
MHz
6
14
21
-
-
-
-
-
MHz
3
-
0.4
-
-
-
-
-
%
4.5
-
0.4
-
-
-
-
-
%
6
-
0.4
-
-
-
-
-
%
3
-
400
-
-
-
-
-
kHz
4.5
-
400
-
-
-
-
-
kHz
6
-
400
-
-
-
-
-
kHz
DEMODULATOR SECTION
VOUT VS fIN
R1 = 100kΩ
R2 = ∞
C1 = 100pF
RS = 10kΩ
R3 = 100kΩ
C2 = 100pF
3
-
-
-
-
-
-
-
mV/kHz
4.5
-
330
-
-
-
-
-
mV/kHz
6
-
-
-
-
-
-
-
mV/kHz
CL = 50pF
4.5
-
-
45
-
56
-
68
ns
SIGIN, COMPIN to PCPOUT tPHL, tPLH
CL = 50pF
4.5
-
-
68
-
85
-
102
ns
SIGIN, COMPIN to PC3OUT tPHL, tPLH
CL = 50pF
4.5
-
-
58
-
73
-
87
ns
HCT TYPES
PHASE COMPARATOR SECTION
Propagation Delay
SIGIN, COMPIN to PCIOUT
tPHL, tPLH
Output Transition Time
tTLH, tTHL
CL = 50pF
4.5
-
-
15
-
19
-
22
ns
Output Enable Time, SIGIN,
COMPIN to PC2OUT
tPZH, tPZL
CL = 50pF
4.5
-
-
60
-
75
-
90
pF
Output Disable Time, SIGIN,
COMPIN to PCZOUT
tPHZ, tPLZ
CL = 50pF
4.5
-
-
68
-
85
-
102
pF
VI(P-P)
3
-
11
-
-
-
-
-
mV
4.5
-
15
-
-
-
-
-
mV
6
-
33
-
-
-
-
-
mV
AC Coupled Input Sensitivity
(P-P) at SIGIN or COMPIN
VCO SECTION
Frequency Stability with
Temperature Change
Maximum Frequency
Center Frequency
∆f
∆T
R1 = 100kΩ,
R2 = ∞
4.5
-
0.11
-
-
-
-
-
%/oC
fMAX
C1 = 50pF
R1 = 3.5kΩ
R2 = ∞
4.5
-
24
-
-
-
-
-
MHz
C1 = 0pF
R1 = 9.1kΩ
R2 = ∞
4.5
-
38
-
-
-
-
-
MHz
C1 = 40pF
R1 = 3kΩ
R2 = ∞
VCOIN =
VCC/2
3
7
10
-
-
-
-
-
MHz
4.5
12
17
-
-
-
-
-
MHz
6
14
21
-
-
-
-
-
MHz
11
CD54/74HC4046A, CD54/74HCT4046A
Switching Specifications
PARAMETER
CL = 50pF, Input tr, tf = 6ns (Continued)
SYMBOL
∆fVCO
Frequency Linearity
Offset Frequency
TEST
CONDITIONS
-40oC TO
85oC
25oC
-55oC TO
125oC
VCC (V)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNITS
R1 = 100kΩ
R2 = ∞
C1 = 100pF
4.5
-
0.4
-
-
-
-
-
%
R2 = 220kΩ
C1 = 1nF
4.5
-
400
-
-
-
-
-
kHz
R1 = 100kΩ
R2 = ∞
C1 = 100pF
RS = 10kΩ
R3 = 100kΩ
C2 = 100pF
4.5
-
330
-
-
-
-
-
mV/kHz
DEMODULATOR SECTION
VOUT VS fIN
Test Circuits and Waveforms
SIGIN
INPUTS
SIGIN COMPIN
VS
VS
INPUTS
tPHL
tPHL
COMPIN
INPUTS
PCPOUT PC1OUT
tTLH
PC2OUT
OUTPUT
tTLH
FIGURE 8. INPUT TO OUTPUT PROPAGATION DELAYS AND
OUTPUT TRANSITION TIMES
tPZL
tPZL
tPZH
VS
PC3OUT OUTPUTS
VS
tPZH
90%
VS
10%
FIGURE 9. THREE STATE ENABLE AND DISABLE TIMES FOR
PC2OUT
Typical Performance Curves
800
II
R1MIN OR R2MIN (OHMS)
700
∆VI
600
500
400
300
200
100
SELF-BIAS OPERATING POINT
0
0
1
2
3
4
5
6
SUPPLY VOLTAGE, VCC (V)
VI
FIGURE 10. TYPICAL INPUT RESISTANCE CURVE AT SIGIN,
COMPIN
FIGURE 11. HC/HCT4046A R1 (MIN) OR R2 (MIN) vs SUPPLY
VOLTAGE (VCC)
12
CD54/74HC4046A, CD54/74HCT4046A
Typical Performance Curves
(Continued)
108
106
105
104
103
102
VCOIN = 0.5 VCC
10
1
106
105
104
103
102
VCOIN = 0.5 VCC
10
VCC = 6.0V
VCC = 4.5V
1
R1 =3K
R1 = 30K
R1 =330K
R1 = 3M
R1 = 15M
107
CENTER FREQUENCY (Hz)
107
CENTER FREQUENCY (Hz)
108
R1 = 2.2K
R1 = 22K
R1 = 220K
R1 = 2.2M
R1 = 11M
1
102
10
103
104
105
106
1
102
10
FIGURE 12. HC4046A TYPICAL CENTER FREQUENCY vs R1,
C1 (VCC = 4.5V)
108
105
104
103
102
VCOIN = 0.5 VCC
VCC = 3.0V
10
106
105
104
103
102
VCOIN = 0.5 VCC
10
VCC = 4.5V
R2 = OPEN
1
1
1
102
10
103
104
105
106
1
102
10
CAPACITANCE, C1 (pF)
108
103
104
105
106
CAPACITANCE, C1 (pF)
FIGURE 14. HC4046A TYPICAL CENTER FREQUENCY vs R1,
C1 (VCC = 3V, R2 = OPEN)
FIGURE 15. HCT4046A TYPICAL CENTER FREQUENCY vs R1,
C1 (VCC = 4.5V)
140
R1 = 3K
R1 = 30K
R1 = 300K
R1 = 3M
R1 = 15M
107
106
105
104
103
102
VCC = 5.5V
10
100
VCC = 4.5V
80
VCC = 3V
60
20
1
1
VCC = 6V
40
VCOIN = 0.5 VCC
10
C1 = 50pF
R1 = 1.5M
120
VCO FREQUENCY (kHz)
CENTER FREQUENCY (Hz)
106
R1 = 2.2K
R1 = 22K
R1 = 220K
R1 = 2.2M
R1 = 11M
107
CENTER FREQUENCY (Hz)
CENTER FREQUENCY (Hz)
106
105
FIGURE 13. HC4046A TYPICAL CENTER FREQUENCY vs R1,
C1 (VCC = 6V)
R1 = 1.5K
R1 = 15K
R1 = 150K
R1 = 1.5M
R1 = 7.5M
107
104
CAPACITANCE, C1 (pF)
CAPACITANCE, C1 (pF)
108
103
102
103
104
105
0
106
1
2
3
4
5
6
VCOIN (V)
CAPACITANCE, C1 (pF)
FIGURE 17. HC4046A TYPICAL VCO FREQUENCY vs VCOIN
(R1 = 1.5MΩ, C1 = 50pF)
FIGURE 16. HCT4046A TYPICAL CENTER FREQUENCY vs R1,
C1 (VCC = 5.5V)
13
CD54/74HC4046A, CD54/74HCT4046A
Typical Performance Curves
(Continued)
90
800
C1 = 0.1µF
R1 = 1.5M
C1 = 0.1µF
R1 = 150K
70
VCC = 4.5V
60
50
VCC = 3V
40
VCC = 6V
700
VCO FREQUENCY (Hz)
VCO FREQUENCY (Hz)
80
VCC = 6V
30
600
VCC = 4.5V
500
400
VCC = 3V
300
200
20
10
100
0
1
2
3
4
5
6
0
1
2
VCOIN (V)
5
6
FIGURE 19. HC4046A TYPICAL VCO FREQUENCY vs VCOIN
(R1 = 150kΩ, C1 = 0.1µF)
18
1400
VCC = 6V
C1 = 0.1µF
R1 = 5.6k
VCC = 4.5V
14
VCC = 3V
12
10
8
6
VCC = 6V
C1 = 50pF
R1 = 150K
1200
VCO FREQUENCY (kHz)
16
VCO FREQUENCY (kHz)
4
VCOIN (V)
FIGURE 18. HC4046A TYPICAL VCO FREQUENCY vs VCOIN
(R1 = 1.5MΩ, C1 = 0.1µF)
1000
VCC = 4.5V
800
VCC = 3V
600
400
4
200
2
0
1
2
3
4
5
0
6
1
2
VCOIN (V)
3
4
5
6
VCOIN (V)
FIGURE 20. HC4046A TYPICAL VCO FREQUENCY vs VCOIN
(R1 = 5.6kΩ, C1 = 0.1µF)
FIGURE 21. HC4046A TYPICAL VCO FREQUENCY vs VCOIN
(R1 = 150kΩ, C1 = 0.1µF)
24
24
VCC = 6V
C1 = 50pF
R1 = 5.6K
20
VCO FREQUENCY CHANGE, ∆f (%)
VCO FREQUENCY (MHz)
3
VCC = 4.5V
16
12
VCC = 3V
8
4
0
1
2
3
4
5
20
16
R1 = 1.5M
12
R1 = 150K
8
4
0
R1 = 3K
-4
-8
R1 = 1.5K
-12
-16
-75
6
VCOIN = 0.5 VCC
C1 = 50pF, VCC = 3V
R2 = OPEN
-50
-25
0
25
50
75
100
125
150
AMBIENT TEMPERATURE, TA (oC)
VCOIN (V)
FIGURE 22. HC4046A TYPICAL VCO FREQUENCY vs VCOIN
(R1 = 5.6kΩ, C1 = 50pF)
FIGURE 23. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (VCC = 3V)
14
CD54/74HC4046A, CD54/74HCT4046A
Typical Performance Curves
VCOIN = 0.5 VCC
C1 = 50pF, VCC = 4.5V
R2 = OPEN
16
16
R1 = 2.2M
VCO FREQUENCY CHANGE, ∆f (%)
VCO FREQUENCY CHANGE, ∆f (%)
20
(Continued)
12
R1 = 220K
8
4
0
-4
R1 = 2.2K
-8
-12
-75
12
VCOIN = 0.5 VCC
C1 = 50pF, VCC = 6.0V
R2 = OPEN
8
R1 = 300K
4
0
-4
R1 = 3K
-8
-12
-50
-25
0
25
50
75
100
125
150
-75
-50
AMBIENT TEMPERATURE, TA (oC)
VCO FREQUENCY CHANGE, ∆f (%)
VCO FREQUENCY CHANGE, ∆f (%)
20
R1 = 3M
12
8
R1 = 300K
4
0
R1 = 3K
-4
-8
-12
-75
-50
-25
0
25
50
75
100
0
25
50
75
100
125
150
FIGURE 25. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (VCC = 6V)
20
VCOIN = 0.5 VCC
C1 = 50pF, VCC = 5.5V
R2 = OPEN
-25
AMBIENT TEMPERATURE, TA (oC)
FIGURE 24. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (VCC = 4.5V)
16
R1 = 3M
125
16
AMBIENT TEMPERATURE, TA (oC)
R1 = 2.2M
12
R1 = 220K
8
4
0
-4
R1 = 2.2K
-8
-12
-75
150
VCOIN = 0.5 VCC
C1 = 50pF, VCC = 4.5V
R2 = OPEN
-50
-25
0
25
50
75
100
125
150
AMBIENT TEMPERATURE, TA (oC)
FIGURE 26. HCT4046A TYPICAL CHANGE IN VCO
FREQUENCY vs AMBIENT TEMPERATURE AS A
FUNCTION OF R1
FIGURE 27. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (VCC = 4.5V)
15
CD54/74HC4046A, CD54/74HCT4046A
(Continued)
108
108
107
107
106
OFFSET FREQUENCY (Hz)
OFFSET FREQUENCY (Hz)
Typical Performance Curves
R2 = 2.2K
105
R2 = 22K
104
103
R2 = 220K
102
R2 = 2.2M
VCOIN = 0.5 VCC
VCC = 4.5V
10
1
1
102
10
106
R2 = 1.5K
105
104
R2 = 15K
103
R2 = 150K
102
R2 = 1.5M
VCOIN = 0.5 VCC
VCC = 3V
10
R2 = 11M
1
103
104
105
106
1
102
10
CAPACITANCE, C1 (pF)
107
107
OFFSET FREQUENCY (Hz)
OFFSET FREQUENCY (Hz)
108
106
R2 = 2.2K
105
104
R2 = 22K
103
R2 = 220K
102
R2 = 2.2M
VCOIN = 0.5 VCC
VCC = 4.5V
1
102
10
R2 = 30K
104
R2 = 300K
103
R2 = 3M
102
VCOIN = 0.5 VCC
HC VCC = 6V
HCT VCC = 5.5V
103
104
105
106
1
102
10
104
105
106
FIGURE 31. HC4046A AND HCT4046A OFFSET FREQUENCY
vs R2, C1 (VCC = 6V, VCC = 5.5V)
102
10
1
R2/R1
103
CAPACITANCE, C1 (pF)
fMAX /fMIN
fMAX /fMIN
R2 = 15M
1
PIN 9 = 0.95 VCC FOR fMAX
PIN 9 = 0V FOR fMIN
VCC = 3V, 4.5V, 6V
10-1
106
R2 = 3K
105
10
R2 = 11M
FIGURE 30. HCT4046A OFFSET FREQUENCY vs R2, C1
(VCC = 4.5V)
0
10-2
105
106
CAPACITANCE, C1 (pF)
102
104
FIGURE 29. HC4046A OFFSET FREQUENCY vs R2, C1
(VCC = 3V)
108
1
103
CAPACITANCE, C1 (pF)
FIGURE 28. HC4046A OFFSET FREQUENCY vs R2, C1
(VCC = 4.5V)
10
R2 = 7.5M
10
PIN 9 = 0.95 VCC FOR fMAX
PIN 9 = 0V FOR fMIN
VCC = 4.5V TO 5.5V
10
0
10-2
102
FIGURE 32. HC4046A fMIN/fMAX vs R2/R1 (VCC = 3V, 4.5V, 6V)
10-1
1
R2/R1
10
102
FIGURE 33. HCT4046A fMAX/fMIN vs R2/R1 (VCC = 4.5V TO 5.5V)
16
CD54/74HC4046A, CD54/74HCT4046A
Typical Performance Curves
(Continued)
8
C1 = 50pF
VCC = 4.5V
R2 = OPEN
6
4
LINEARITY (%)
f
f2
f0
∆V = 0.5V OVER THE VCC RANGE:
FOR VCO LINEARITY
f’o = f1 + f2
2
f’o - fo
x 100%
LINEARITY = f’
f0
f1
VCOIN = 2.25V ± 1V
2
VCOIN = 2.25V ± 0.45V
0
-2
-4
o
∆V
MIN
∆V
-6
-8
1K
MAX
VVCOIN
1/2VCC
FIGURE 34. DEFINITION OF VCO FREQUENCY LINEARITY
LINEARITY (%)
LINEARITY (%)
4
VCOIN = 1.50V ± 0.4V
0
VCOIN = 1.50V ± 0.3V
-2
0
-2
-4
-6
-6
10K
100K
R1 (OHMS)
1M
DEMODULATOR POWER DISSIPATION, PD (µW)
2
0
-4
-6
10K
100K
R1 (OHMS)
C1 = 50pF
R2 = OPEN
1M
10K
100K
R1 (OHMS)
1M
10M
FIGURE 37. HC4046A VCO LINEARITY vs R1 (VCC = 6V)
VCC = 5.5V,
VCOIN = 2.75V ±1.3V
6
VCC = 4.5V,
VCOIN = 2.25V ±1.0V
4
VCC = 5.5V,
VCOIN = 2.75V ±0.55V
VCC = 4.5V,
VCOIN = 2.25V ±0.45V
VCOIN = 3V ± 0.6V
-8
1K
10M
8
-2
VCOIN = 3V ± 1.5V
2
-4
FIGURE 36. HC4046A VCO LINEARITY vs R1 (VCC = 3V)
LINEARITY (%)
10M
C1 = 50pF
VCC = 6V
R2 = OPEN
6
2
-8
1K
1M
8
C1 = 50pF
VCC = 3V
R2 = OPEN
4
-8
1K
100K
R1 (OHMS)
FIGURE 35. HC4046A VCO LINEARITY vs R1 (VCC = 4.5V)
8
6
10K
10M
104
VCOIN = 0.5 VCC
103
VCC = 6V
102
VCC = 3V
VCC = 4.5V
10
1
1K
10K
100K
1M
RS (OHMS)
FIGURE 38. HCT4046A VCO LINEARITY vs R1 (VCC = 4.5V,
VCC = 5.5V)
FIGURE 39. HC4046A DEMODULATOR POWER DISSIPATION
vs RS (TYP) (VCC = 3V, 4.5V, 6V)
17
CD54/74HC4046A, CD54/74HCT4046A
(Continued)
106
104
VCO POWER DISSIPATION, PD (µW)
DEMODULATOR POWER DISSIPATION, PD (µW)
Typical Performance Curves
VCOIN = 0.5 VCC
R1 = R2 = OPEN
103
VCC = 6V
102
VCC = 3V
VCC = 4.5V
10
VCOIN = 0.5VCC
R2 = RS = OPEN
CL = 50pF
VCC = 6V
C1 = 50pF
105
VCC = 6V
C1 = 1µF
104
VCC = 3V
C1 = 1µF
103
VCC = 3V
C1 = 50pF
VCC = 4.5V
C1 = 1µF
102
1
1K
1K
10K
100K
10K
1M
FIGURE 40. HCT4046A DEMODULATOR POWER DISSIPATION
vs RS (TYP) (VCC = 3V, 4.5V, 6V)
VCO POWER DISSIPATION, PD (µW)
VCO POWER DISSIPATION, PD (µW)
106
105
VCC = 4.5V
C1 = 50pF
104
VCC = 4.5V
C1 = 1µF
VCC = 6V
C1 = 1µF
103
1M
FIGURE 41. HC4046A VCO POWER DISSIPATION vs R1
(C1 = 50pF, 1µF)
VCOIN = 0V (AT fMIN)
R1 = RS = OPEN
CL = 50pF
VCC = 6V
C1 = 50pF
100K
R1 (OHMS)
RS (OHMS)
106
VCC = 4.5V
C1 = 50pF
102
VCC = 5.5V
C1 = 50pF
105
VCOIN = 0.5V
R2 = RS = OPEN
VCC = 4.5V
C1 = 50pF
104
VCC = 5.5V
C1 = 1µF
103
VCC = 4.5V
C1 = 1µF
102
1K
10K
100K
1K
1M
10K
R2 (OHMS)
FIGURE 42. HCT4046A VCO POWER DISSIPATION vs R2
(C1 = 50pF, 1µF)
FIGURE 43. HCT4046A VCO POWER DISSIPATION vs R1
(C1 = 50pF, 1µF)
106
VCO POWER DISSIPATION, PD (µW)
100K
R1 (OHMS)
VCC = 6V
C1 = 50pF
105
VCOIN = 0V (AT fMIN)
R1 = RS = OPEN
CL = 50pF
VCC = 4.5V
C1 = 50pF
VCC = 6V
C1 = 1µF
104
VCC = 3V
C1 = 1µF
VCC = 3V
C1 = 50pF
103
VCC = 4.5V
C1 = 1µF
102
1K
10K
100K
1M
R2 (OHMS)
FIGURE 44. HC4046A VCO POWER DISSIPATION vs R2 (C1 = 50pF, 1µF)
18
1M
CD54/74HC4046A, CD54/74HCT4046A
References should be made to Figures 12 through 16 and
Figures 28 through 33 as indicated in the table.
HC/HCT4046A CPD
CHIP SECTION
HC
HCT
UNIT
Comparator 1
48
50
pF
Comparators 2 and 3
39
48
pF
VCO
61
53
pF
Values of the selected components should be within the following ranges:
Application Information
This information is a guide for the approximation of values of
external components to be used with the ’HC4046A and
’HCT4046A in a phase-lock-loop system.
SUBJECT
VCO Frequency
Without Extra Offset
R1
Between 3kΩ and 300kΩ
R2
Between 3kΩ and 300kΩ
R1 + R2
Parallel Value > 2.7kΩ
C1
Greater Than 40pF
PHASE
COMPARATOR
PC1, PC2 or PC3
DESIGN CONSIDERATIONS
VCO Frequency Characteristic
With R2 = ∞ and R1 within the range 3kΩ < R1 < 300kΩ, the characteristics of the VCO operation will be as shown in Figures 12 - 16. (Due to R1, C1 time constant a small offset remains
when R2 = ∞.)
fMAX
fVCO
fo
2fL
fMIN
MIN
1/2 VCC VVCOIN
MAX
FIGURE 45. FREQUENCY CHARACTERISTIC OF VCO OPERATING WITHOUT
OFFSET: fo = CENTER FREQUENCY: 2fL = FREQUENCY LOCK RANGE
VCO Frequency with
Extra Offset
PC1
Selection of R1 and C1
Given fo, determine the values of R1 and C1 using Figures 12 - 16.
PC2 or PC3
Given fMAX calculate fo as fMAX/2 and determine the values of R1 and C1 using Figures 12 16. To obtain 2fL: 2fL ≈ 1.2 (VCC - 1.8V)/(R1C1) where valid range of VCOIN is 1.1V < VCOIN
< VCC - 0.9V
PC1, PC2 or PC3
VCO Frequency Characteristic
With R1 and R2 within the ranges 3kΩ < R1 < 300kΩ, 3kΩ, < R2 < 300kΩ, the characteristics
of the VCO operation will be as shown in Figures 28 - 33.
fMAX
fVCO
2fL
fo
fMIN
MIN
1/2 VCC
VVCOIN
MAX
FIGURE 46. FREQUENCY CHARACTERISTIC OF VCO OPERATING WITH OFFSET:
fo = CENTER FREQUENCY: 2fL = FREQUENCY LOCK RANGE
PC1, PC2 or PC3
Selection of R1, R2 and C1
Given fo and fL, offset frequency, fMIN, may be calculated from fMIN ≈ fo - 1.6 fL.
Obtain the values of C1 and R2 by using Figures 28 - 31.
Calculate the values of R1 from Figures 32 - 33.
19
CD54/74HC4046A, CD54/74HCT4046A
SUBJECT
PLL Conditions with
No Signal at the
SIGIN Input
PLL Frequency
Capture Range
PHASE
COMPARATOR
DESIGN CONSIDERATIONS
PC1
VCO adjusts to fo with φDEMOUT = 90o and VVCOIN = 1/2 VCC (see Figure 2)
PC2
VCO adjusts to fMIN with φDEMOUT = -360o and VVCOIN = 0V (see Figure 4)
PC3
VCO adjusts to fMAX with φDEMOUT = 360o and VVCOIN = VCC (see Figure 6)
PC1, PC2 or PC3
Loop Filter Component Selection
|F(jω)|
R3
INPUT
(A)
C2
-1/τ
OUTPUT
ω
τ = R3 x C2
(B) AMPLITUDE CHARACTERISTIC
(C) POLE-ZERO DIAGRAM
1/π (2πfL/τ.)1/2
A small capture range (2fc) is obtained if τ > 2fc ≈
FIGURE 47. SIMPLE LOOP FILTER FOR PLL WITHOUT OFFSET
R3
|F(jω)|
R4
INPUT
m=
R4
R3 + R4
OUTPUT
m
C2
(A) τ1 = R3 x C2;
τ2 = R4 x C2;
τ3 = (R3 + R4) x C2
1/τ3 1/τ2 ω
(B) AMPLITUDE CHARACTERISTIC
-1/τ2 -1/τ3
(C) POLE-ZERO DIAGRAM
FIGURE 48. SIMPLE LOOP FILTER FOR PLL WITH OFFSET
PLL Locks on
Harmonics at Center
Frequency
PC1 or PC3
Yes
PC2
No
Noise Rejection at
Signal Input
PC1
High
PC2 or PC3
Low
AC Ripple Content
when PLL is Locked
PC1
fr = 2fi, large ripple content at φDEMOUT = 90o
PC2
fr = fi, small ripple content at φDEMOUT = 0o
PC3
fr = fSIGIN, large ripple content at φDEMOUT = 180o
20
21
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