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MC74HC4046A_14 Datasheet, PDF (11/15 Pages) ON Semiconductor – Phase-Locked Loop | |||
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MC74HC4046A
106
CLâ=â50âpF; R2â=ââ; VVCOINâ=â1/2 VCC FOR VCCâ=â4.5âV AND 6.0âV;
VVCOINâ=â1/3 VCC FOR VCCâ=â3.0âV; Tambâ=â25°C
106
CLâ=â50âpF; R1â=ââ; VVCOINâ=â0âV; Tambâ=â25°C
105
104
103
100
101
102
R1 (kW)
105
VCCâ=â6.0âV, C1â=â40âpF
VCCâ=â6.0âV, C1â=â1.0 mF
VCCâ=â4.5âV, C1â=â40âpF
VCCâ=â4.5âV, C1â=â1.0 mF
VCCâ=â3.0âV, C1â=â40âpF
VCCâ=â3.0âV, C1â=â1.0 mF
103
104
103
100
Figure 16. Power Dissipation versus R1
VCCâ=â6.0âV, C1â=â40âpF
VCCâ=â6.0âV, C1â=â1.0 mF
VCCâ=â3.0âV, C1â=â1.0 mF
101
VCCâ=â4.5âV, C1â=â40âpF
VCCâ=â4.5âV, C1â=â1.0 mF
VCCâ=â3.0âV, C1â=â40âpF
102
103
R2 (kW)
Figure 17. Power Dissipation versus R2
103
R1â=âR2â=ââ; Tambâ=â25°C
102
101
100
101
VCC=6.0 V
VCC=4.5 V
VCC=3.0 V
102
103
RS (kW)
Figure 18. DC Power Dissipation of
Demodulator versus RS
108
VCCâ=
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
3.0 V
105
104
INHâ=âGND; Tambâ=â25°C; R2â=ââ; VVCOINâ=â1/3 VCC
R1=3.0âkW
R1=100âkW
103
R1=300âkW
102
101
102
103
104
C1 (pF)
105
106
Figure 19. VCO Center Frequency versus C1
108
VCCâ=
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
R1â=ââ; VVCOINâ=â1/2 VCC FOR VCCâ=â4.5âV AND 6.0âV;
VVCOINâ=â1/3 VCC FOR VCCâ=â3.0âV; INHâ=âGND; Tambâ=â25°C
R2=3.0âkW
103
R2=100âkW
102
R2=300âkW
101
101
102
103
104
105
106
C1 (pF)
Figure 20. Frequency Offset versus C1
108
107
VCCâ=â4.5âV; R2â=ââ
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
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