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PDF IN74HC4046A Data sheet ( Hoja de datos )
| Número de pieza | IN74HC4046A | |
| Descripción | Phase-Locked Loop | |
| Fabricantes | IK Semiconductor | |
| Logotipo |  |
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TECHNICAL DATA
Phase-Locked Loop
High-Performance Silicon-Gate CMOS
IN74HC4046A
The device inputs are compatible with standard CMOS outputs; with
pullup resistors, they are compatible with LS/ALSTTL outputs.
The IN74HC4046A phase-locked loop contains three phase
comparators, a voltage-controlled oscillator (VCO) and unity gain op-
amp DEMOUT. The comparators have two common signal inputs,
COMPIN, and SIGIN. Input SIGIN and COMPIN can be used directly
coupled to large voltage signals, or indirectly coupled (with a series
capacitor to small voltage signals). The self-bias circuit adjusts small
voltage signals in the linear region of the amplifier. Phase comparator 1
(an exclusive OR gate) provides a digital error signal PC1OUT and
maintains 90 degrees phase shift at the center frequency between SIGIN
and COMPIN signals (both at 50% duty cycle). Phase comparator 2 (with ORDERING INFORMATION
leading-edge sensing logic) provides digital error signals PC2OUT and
IN74HC4046AN Plastic
PCPOUT and maintains a 0 degree phase shift between SIGIN and COMPIN
IN74HC4046AD SOIC
signals (duty cycle is immaterial). The linear VCO produces an output TA = -55° to 125° C for all packages
signal VCOOUT whose frequency is determined by the voltage of input
VCOIN signal and the capacitor and resistors connected to pins C1A,
C1B, R1 and R2. The unity gain op-amp output DEMOUT with an external
resistor is used where the VCOIN signal is needed but no loading can be tolerated. The inhibit input, when high,
disables the VCO and all on-amps to minimize standby power consumption.
Applications include FM and FSK modulation and demodulation, frequency synthesis and multiplication,
frequency discrimination, tone decoding, data synchronization and conditioning, voltage-to-frequency conversion and
motor speed control.
• Low Power Consumption Characteristic of CMOS Device
• Operating Speeds Similary to LS/ALSTTL
PIN ASSIGNMENT
• Wide Operating Voltage Range: 3.0 to 6.0 V
• Low Input Current: 1.0 µA Maximum (except SIGIN and COMPIN)
• Low Quiescent Current: 80 µA Maximum (VCO disabled)
• High Noise Immunity Characteristic of CMOS Devices
• Diode Protection on all Inputs
Pin No.
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 (0 V) VSS
m9
VCOIN
VCO Input
o10
DEMOUT
Demodulator Output
.c11 R1 Resistor R1 Connection
u12 R2 Resistor R2 Connection
t413
PC2OUT
Phase Comparator 2 Output
14
SIGIN
Signal Input
e15
PC3OUT
Phase Comparator 3 Output
www.datashe16 VCC Positive Supply Voltage
1
1 page  
IN74HC4046A
[VCO Section]
DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) - continued
VCC Guaranteed Limit
Symbol
Parameter
Test Conditions V 25 °C to
-55°C
≤85°C
≤125°C Unit
IIN Maximum Input
VIN =Vcc or GND 6.0
0.1
1.0
1.0 µA
Leakage Current INH,
VCOIN
Min Max Min Max Min Max
VVCOIN
Operating Voltage
Range at VCOIN over
the range specified for
R1; For linearity see
Fig.13A, Parallel
value of R1 and R2
should be >2.7 kΩ
INH= VIL
3.0 0.1 1.0 0.1 1.0 0.1 1.0
4.5 0.1 2.5 0.1 2.5 0.1 2.5
6.0 0.1 4.0 0.1 4.0 0.1 4.0
V
R1 Resistor Range
3.0 3.0 300 3.0 300 3.0 300 kΩ
4.5 3.0 300 3.0 300 3.0 300
6.0 3.0 300 3.0 300 3.0 300
R2 3.0 3.0 300 3.0 300 3.0 300
4.5 3.0 300 3.0 300 3.0 300
6.0 3.0 300 3.0 300 3.0 300
C1 Capacitor Range
3.0 40 No
4.5 40 Li-
6.0 40 mit
pF
[VCO Section]
AC ELECTRICAL CHARACTERISTICS (CL=50pF,Input tr=tf=6.0 ns)
Symbol
Parameter
∆f/T Frequency Stability with Temperature
Changes (Figures 11A,B,C)
fo VCO Center Frequency
(Duty Factor = 50%)
(Figures 12A,B,C)
∆fVCO VCO Frequency Linearity
∂VCO Duty Factor at VCOOUT
VCC Guaranteed Limit
V 25 °C to
-55°C
≤85°C
≤125°C
Unit
Min Max Min Max Min Max
3.0 %/K
4.5
6.0
3.0 3
4.5 11
6.0 13
MHz
3.0 See Figures 13A,B
4.5
6.0
%
3.0 Typical 50%
4.5
6.0
%
5
5 Page 
IN74HC4046A
Figure 12C. VCO Frequency (fVCO) as a Function
of the VCO Input Voltage (VVCOIN)
Figure 12D. VCO Frequency (fVCO) as a Function
of the VCO Input Voltage (VVCOIN)
Figure 13A. Frequency Linearity versus R1,C1 and
VCC
Figure 13B. Definition of VCO Frequency
Linearity)
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet IN74HC4046A.PDF ] | |
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