MC74HC4046A Datasheet, PDF (12/15 Pages) ON Semiconductor – Phase-Locked Loop

MC74HC4046A
106
CL = 50 pF; R2 = ∞; VVCOIN = 1/2 VCC FOR VCC = 4.5 V AND 6.0 V;
VVCOIN = 1/3 VCC FOR VCC = 3.0 V; Tamb = 25°C
105
104
103
100
101
102
R1 (kΩ)
VCC = 6.0 V, C1 = 40 pF
VCC = 6.0 V, C1 = 1.0 µF
VCC = 4.5 V, C1 = 40 pF
VCC = 4.5 V, C1 = 1.0 µF
VCC = 3.0 V, C1 = 40 pF
VCC = 3.0 V, C1 = 1.0 µF
103
Figure 16. Power Dissipation versus R1
106
CL = 50 pF; R1 = ∞; VVCOIN = 0 V; Tamb = 25°C
105
104
103
100
VCC = 6.0 V, C1 = 40 pF
VCC = 6.0 V, C1 = 1.0 µF
VCC = 3.0 V, C1 = 1.0 µF
101
VCC = 4.5 V, C1 = 40 pF
VCC = 4.5 V, C1 = 1.0 µF
VCC = 3.0 V, C1 = 40 pF
102
103
R2 (kΩ)
Figure 17. Power Dissipation versus R2
103
R1 = R2 = ∞; Tamb = 25°C
102
101
100
101
VCC=6.0 V
VCC=4.5 V
VCC=3.0 V
102
103
RS (kΩ)
Figure 18. DC Power Dissipation of
Demodulator versus RS
108 _{VCC =}
6.0 V
107
4.5 V
3.0 V
6.0 V
4.5 V
106 ^{3.0 V}
6.0 V
4.5 V
105 ^{3.0 V}
104
INH = GND; Tamb = 25°C; R2 = ∞; VVCOIN = 1/3 VCC
R1=3.0 kΩ
R1=100 kΩ
103
R1=300 kΩ
102
101
102
103
104
C1 (pF)
105
106
Figure 19. VCO Center Frequency versus C1
108 _{VCC =}
6.0 V
107 ^{4.5 V}
3.0 V
6.0 V
106 ^{4.5 V}
3.0 V
105
6.0 V
4.5 V
3.0 V
104
R1 = ∞; VVCOIN = 1/2 VCC FOR VCC = 4.5 V AND 6.0 V;
VVCOIN = 1/3 VCC FOR VCC = 3.0 V; INH = GND; Tamb = 25°C
R2=3.0 kΩ
103
R2=100 kΩ
102
R2=300 kΩ
101
101
102
103
104
105
106
C1 (pF)
Figure 20. Frequency Offset versus C1
108
107
VCC = 4.5 V; R2 = ∞
106
105
104
103
102
10–7 10–6
10–5 _{10–4 10–3 10–2 10–1}
R1C1
Figure 21. Typical Frequency Lock Range (2fL)
versus R1C1
MOTOROLA
3–12
High–Speed CMOS Logic Data
DL129 — Rev 6