CD74HC4046A Datasheet, PDF (14/28 Pages) Texas Instruments – High-Speed CMOS Logic Phase-Locked Loop with VCO

CD54HC4046A, CD74HC4046A, CD54HCT4046A, CD74HCT4046A
Typical Performance Curves (Continued)
90
C1 = 0.1µF
80 R1 = 1.5M
V_CC = 6V
70
60
V_CC = 4.5V
50
40
V_CC = 3V
30
20
10
0
1
2
3
4
5
6
VCO_IN (V)
FIGURE 17. HC4046A TYPICAL VCO FREQUENCY vs VCO_IN
(R1 = 1.5MΩ, C1 = 0.1µF)
800
C1 = 0.1µF
R1 = 150K
700
V_CC = 6V
600
V_CC = 4.5V
500
400
V_CC = 3V
300
200
100
0
1
2
3
4
5
6
VCO_IN (V)
FIGURE 18. HC4046A TYPICAL VCO FREQUENCY vs VCO_IN
(R1 = 150kΩ, C1 = 0.1µF)
18
C1 = 0.1µF
16 R1 = 5.6k
14
V_CC = 3V
12
V_CC = 6V
V_CC = 4.5V
10
8
6
4
2
0
1
2
3
4
5
6
VCO_IN (V)
FIGURE 19. HC4046A TYPICAL VCO FREQUENCY vs VCO_IN
(R1 = 5.6kΩ, C1 = 0.1µF)
24
C1 = 50pF
R1 = 5.6K
20
V_CC = 6V
16
V_CC = 4.5V
12
V_CC = 3V
8
4
0
1
2
3
4
5
6
VCO_IN (V)
FIGURE 21. HC4046A TYPICAL VCO FREQUENCY vs VCO_IN
(R1 = 5.6kΩ, C1 = 50pF)
1400
1200
C1 = 50pF
R1 = 150K
V_CC = 6V
1000
800
600
V_CC = 4.5V
V_CC = 3V
400
200
0
1
2
3
4
5
6
VCO_IN (V)
FIGURE 20. HC4046A TYPICAL VCO FREQUENCY vs VCO_IN
(R1 = 150kΩ, C1 = 50pF)
24
20
VCO_IN = 0.5 V_CC
C1 = 50pF, V_CC = 3V
16 ^{R2 = OPEN}
R1 = 1.5M
12
R1 = 150K
8
4
0
R1 = 3K
-4
-8
R1 = 1.5K
-12
-16
-75 -50 -25
0 25 50 75 100 125 150
AMBIENT TEMPERATURE, T_A (^oC)
FIGURE 22. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (V_CC = 3V)
14