參數(shù)資料
型號: HCT9046
廠商: NXP Semiconductors N.V.
英文描述: PLL with bandgap controlled VCO
中文描述: 鎖相環(huán)控制VCO的帶隙
文件頁數(shù): 34/40頁
文件大?。?/td> 240K
代理商: HCT9046
1999 Jan 11
34
Philips Semiconductors
Product specification
PLL with bandgap controlled VCO
74HCT9046A
MBD098
R4
C2
R2
R1
VCO
R3'
PHASE
COMPARATOR
PC2
DIVIDE BY 10
"190"
OSCILLATOR
"HCU04"
13
100 kHz
14
3
4
fOUT
PROGRAMMABLE
DIVIDER
"4059"
9
11
12 6
7
5
1 MHz
Kp
Kn
Kf
Ko
C1
C3
(1)
R
15
b
Φ
u
Fig.34 Frequency synthesizer.
R1 = 30 k
.
R2 = 30 k
.
C1 = 100 pF.
R3
'
= 2550
.
R
b
= 43 k
.
R4 = 600
.
C2 = 470 nF.
C3 = 39 nF.
(1)
R3'
fictive resistance
R
b
17
=
R3'
------
=
0
1
2
4
1.6
1.0
0.6
0
0.8
MGA959
3
1.4
1.2
0.4
0.2
5
6
7
8
ω
nt
ω
ω
e
/
ω
n
(t)
e
Φ
(t)
e
Φ
e
/
ω
n
0.6
0
0.4
1.0
0.2
0.4
0.2
0.6
0.8
= 5.0
ζ
0.5
0.707
1.0
= 0.3
ζ
= 2.0
ζ
Fig.35 Type 2, second order frequency step response.
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