74HCT9046AN Philips, 74HCT9046AN Datasheet - Page 24

• Manufacturer Part Number: 74HCT9046AN
• Description: PLL with bandgap controlled VCO
• Manufacturer: Philips

Philips Semiconductors
1999 Jan 11
PLL with bandgap controlled VCO
R2 = .
f
linearity
c
10
=
10
(W)
P D
Fig.24 Definition of VCO frequency linearity:
f
-------------- -
f' c
1
f c
Fig.26 Power dissipation as a function of
f 2
f
f 1
1
1
2
+
2
0
f
=
2
f
--------------- -
c
f
–
5.5 V
C1 = 1 F
4.5 V
C1 = 1 F
c
V = 0.5 V over the V
V
component values.
5.5 V
C1 = 39 pF
f
min
c
CC
4.5 V
C1 = 39 pF
100%
=
100
V
1/2V CC
200
CC
V
range.
R1 (k )
max
MBD121
V VCOIN
MGA937 - 1
300
24
R1 = .
R2 =
Fig.25 Frequency linearity as a function of R1, C1
f VCO
(%)
10
(W)
10
P
D
Fig.27 Power dissipation as a function of
4
0
4
8
1
1
2
and V = 0.5 V.
0
1
C1 = 1 F
4.5 V
5.5 V
C1 =
39 pF
4.5 V
5.5 V
and V
5.5 V
C1 = 39 pF
4.5 V
C1 = 39 pF
V
component values.
CC
CC
5.5 V
4.5 V
C1 = 1 F
=
.
100
10
74HCT9046A
200
10
Product specification
2
R2 (k )
R1 (k )
MBD110
MBD114
300
10
3