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| CD74HC4046A Datasheet, PDF (16/28 Pages) Texas Instruments – High-Speed CMOS Logic Phase-Locked Loop with VCO | |||
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CD54HC4046A, CD74HC4046A, CD54HCT4046A, CD74HCT4046A
Typical Performance Curves (Continued)
108
107
106
105
104
103
102
10 VCOIN = 0.5 VCC
VCC = 4.5V
1
1
10
102
103
104
CAPACITANCE, C1 (pF)
R2 = 2.2K
R2 = 22K
R2 = 220K
R2 = 2.2M
R2 = 11M
105
106
FIGURE 27. HC4046A OFFSET FREQUENCY vs R2, C1
(VCC = 4.5V)
108
107
106
105
104
103
102
10 VCOIN = 0.5 VCC
VCC = 4.5V
1
1
10
102
103
104
CAPACITANCE, C1 (pF)
R2 = 2.2K
R2 = 22K
R2 = 220K
R2 = 2.2M
R2 = 11M
105
106
FIGURE 29. HCT4046A OFFSET FREQUENCY vs R2, C1
(VCC = 4.5V)
108
107
106
105
104
103
102
10 VCOIN = 0.5 VCC
VCC = 3V
1
1
10
102
103
104
CAPACITANCE, C1 (pF)
R2 = 1.5K
R2 = 15K
R2 = 150K
R2 = 1.5M
R2 = 7.5M
105
106
FIGURE 28. HC4046A OFFSET FREQUENCY vs R2, C1
(VCC = 3V)
108
107
106
105
104
103
102 VCOIN = 0.5 VCC
10 HC VCC = 6V
HCT VCC = 5.5V
1
1
10
102
103
104
CAPACITANCE, C1 (pF)
R2 = 3K
R2 = 30K
R2 = 300K
R2 = 3M
R2 = 15M
105
106
FIGURE 30. HC4046A AND HCT4046A OFFSET FREQUENCY
vs R2, C1 (VCC = 6V, VCC = 5.5V)
PIN 9 = 0.95 VCC FOR fMAX
102 PIN 9 = 0V FOR fMIN
VCC = 3V, 4.5V, 6V
PIN 9 = 0.95 VCC FOR fMAX
102 PIN 9 = 0V FOR fMIN
VCC = 4.5V TO 5.5V
10
10
0
10-2
10-1
1
10
102
R2 / R1
FIGURE 31. HC4046A fMIN/fMAX vs R2/R1 (VCC = 3V, 4.5V, 6V)
0
10-2
10-1
1
10
102
R2 / R1
FIGURE 32. HCT4046A fMAX/fMIN vs R2/R1 (VCC = 4.5V TO 5.5V)
16
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