參數(shù)資料
型號: 935221200118
廠商: NXP SEMICONDUCTORS
元件分類: PLL合成/DDS/VCOs
英文描述: PHASE LOCKED LOOP, PDSO16
封裝: PLASTIC, SOT-403, TSSOP-16
文件頁數(shù): 17/40頁
文件大?。?/td> 240K
代理商: 935221200118
1999 Jan 11
24
Philips Semiconductors
Product specication
PLL with bandgap controlled VCO
74HCT9046A
Fig.24 Definition of VCO frequency linearity:
V = 0.5 V over the VCC range.
MGA937 - 1
f
max
f1
min
1/2VCC
f'c
f c
f2
VVCOIN
V
f
c
f
1
f
2
+
2
---------------
=
linearity
f
c
f
c
f
c
----------------
100%
×
=
Fig.25 Frequency linearity as a function of R1, C1
and VCC.
4
0
1
MBD114
10
10 2
10 3
8
f VCO
(%)
R1 (k
)
C1 = 1
F
4.5 V
5.5 V
C1 =
39 pF
4.5 V
5.5 V
R2 =
∞ and V = 0.5 V.
Fig.26 Power dissipation as a function of
component values.
300
0
100
MBD121
10 1
1
200
10 2
R1 (k
)
4.5 V
C1 = 1
F
5.5 V
C1 = 39 pF
4.5 V
C1 = 39 pF
5.5 V
C1 = 1
F
CC
V
=
PD
(W)
R2 =
∞.
Fig.27 Power dissipation as a function of
component values.
R1 =
∞.
300
0
100
MBD110
10 1
1
200
10 2
R2 (k
)
P
5.5 V
C1 = 39 pF
CC
5.5 V
4.5 V
C1 = 1
F
4.5 V
C1 = 39 pF
V
=
D
(W)
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