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CD74HC4046A Datasheet, PDF (18/28 Pages) Texas Instruments – High-Speed CMOS Logic Phase-Locked Loop with VCO
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CD54HC4046A, CD74HC4046A, CD54HCT4046A, CD74HCT4046A
Typical Performance Curves (Continued)
104
VCOIN = 0.5 VCC
R1 = R2 = OPEN
103
102
10
VCC = 6V
VCC = 3V
VCC = 4.5V
1
1K
10K
100K
1M
RS (OHMS)
106
VCOIN = 0.5VCC
R2 = RS = OPEN
CL = 50pF
105
104
VCC = 6V
C1 = 50pF
VCC = 6V
C1 = 1µF
VCC = 3V
C1 = 1µF
103
102
1K
VCC = 3V
C1 = 50pF
VCC = 4.5V
C1 = 1µF
10K
R1 (OHMS)
100K
VCC = 4.5V
C1 = 50pF
1M
FIGURE 39. HCT4046A DEMODULATOR POWER DISSIPATION
vs RS (TYP) (VCC = 3V, 4.5V, 6V)
FIGURE 40. HC4046A VCO POWER DISSIPATION vs R1
(C1 = 50pF, 1µF)
106
VCOIN = 0V (AT fMIN)
VCC = 6V
R1 = RS = OPEN
C1 = 50pF
CL = 50pF
105
104
VCC = 4.5V
C1 = 1µF
VCC = 6V
103
C1 = 1µF
VCC = 4.5V
C1 = 50pF
106
VCC = 5.5V
105
C1 = 50pF
104
VCC = 5.5V
C1 = 1µF
103
VCC = 4.5V
C1 = 1µF
VCOIN = 0.5V
R2 = RS = OPEN
VCC = 4.5V
C1 = 50pF
102
1K
10K
100K
1M
R2 (OHMS)
FIGURE 41. HCT4046A VCO POWER DISSIPATION vs R2
(C1 = 50pF, 1µF)
102
1K
10K
100K
1M
R1 (OHMS)
FIGURE 42. HCT4046A VCO POWER DISSIPATION vs R1
(C1 = 50pF, 1µF)
106
VCC = 6V
C1 = 50pF
105
104
VCC = 3V
C1 = 1µF
103
VCC = 3V
C1 = 50pF
VCOIN = 0V (AT fMIN)
R1 = RS = OPEN
CL = 50pF
VCC = 4.5V
C1 = 50pF
VCC = 6V
C1 = 1µF
102
1K
VCC = 4.5V
C1 = 1µF
10K
100K
1M
R2 (OHMS)
FIGURE 43. HC4046A VCO POWER DISSIPATION vs R2 (C1 = 50pF, 1µF)
18
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