CD54HC4046A, CD74HC4046A, CD54HCT4046A, CD74HCT4046A
Typical Performance Curves (Continued)
VCO = 0.5 V
IN
20
16
12
8
CC
= 4.5V
VCO = 0.5 V
IN CC
16
12
8
R1 = 2.2M
C1 = 50pF, V
R1 = 3M
CC
C1 = 50pF, V
= 6.0V
CC
R2 = OPEN
R2 = OPEN
R1 = 300K
R1 = 220K
4
4
0
0
-4
-8
-12
R1 = 3K
-4
-8
-12
R1 = 2.2K
-75 -50
-25
0
25
50
75
100 125 150
-75
-50
-25
0
25
50
75
100 125 150
o
AMBIENT TEMPERATURE, T ( C)
o
A
AMBIENT TEMPERATURE, T ( C)
A
FIGURE 23. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
FIGURE 24. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (V
= 4.5V)
R1 (V
= 6V)
CC
CC
20
16
12
8
VCO = 0.5 V
IN CC
20
16
12
8
VCO = 0.5 V
IN
R1 = 2.2M
CC
= 5.5V
C1 = 50pF, V
= 4.5V
CC
C1 = 50pF, V
CC
R1 = 3M
R2 = OPEN
R2 = OPEN
R1 = 220K
R1 = 300K
4
4
0
0
R1 = 3K
-4
-8
-12
-4
-8
-12
R1 = 2.2K
-75
-50
-25
0
25
50
75
100 125 150
-75
-50
-25
0
25
50
75
100 125 150
o
o
AMBIENT TEMPERATURE, T ( C)
AMBIENT TEMPERATURE, T ( C)
A
A
FIGURE 25. HCT4046A TYPICAL CHANGE IN VCO
FREQUENCY vs AMBIENT TEMPERATURE AS A
FUNCTION OF R1
FIGURE 26. HC4046A TYPICAL CHANGE IN VCO FREQUENCY
vs AMBIENT TEMPERATURE AS A FUNCTION OF
R1 (V
= 4.5V)
CC
15
TI [ TEXAS INSTRUMENTS ]
