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參數(shù)資料
| 型號(hào)： | LMX1501 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | PLLatinumTM 1.1 GHz Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLLatinumTM 1.1千兆赫頻率合成射頻個(gè)人通信 |
| 文件頁(yè)數(shù)： | 17/22頁(yè) |
| 文件大?。?/td> | 367K |
| 代理商： | LMX1501 |
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Application Information
(Continued)
Example
Y
1
K
VCO
e
19.3 MHz/V
K
w
e
5 mA (Note 1)
RF
opt
e
886 MHz
F
ref
e
25 kHz
N
e
RF
opt
/f
ref
e
35440
0
p
e
2
q
*
5 kHz
e
3.1415e4
w
p
e
43
§
ATTEN
e
10 dB
T3
e
0
T1
e
sec
w
p
b
tan
w
p
0
p
e
1.38e
b
5
10
(10/20)
b
1
(2
q
#
25e3)
2
e
9.361e
b
6
0
c
e
(tan 43
§
)
#
(1.38e
b
5
a
9.361e
b
6)
[
(1.38e
b
5
a
9.361e
b
6)
2
a
1.38e
b
5
#
9.361e
b
6
]
#
D
0
1
a
(1.38e
b
5
a
9.361e
b
6)
2
a
1.38e
b
5
#
9.361e
b
6
[
(tan 43
§
)
#
(1.38e
b
5
a
9.361e
b
6)
]
2
b
1
(
e
1.8101e4
T2
e
C2
e
2.153 nF
#
1
(1.8101e4)
2
#
(1.38e
b
5
a
9.361e
b
6)
(5e
b
3)
#
19.3e6
e
1.318e
b
4
C1
e
1.38e
b
5
1.318e
b
4
e
2.153 nF
(1.8101e4)
2
#
(35440)
#
D
[
1
a
(1.8101e4)
2
#
(1.318e
b
4)
2
]
[
1
a
(1.8101e4)
2
#
(1.38e
b
5)
2
] [
1
a
(1.8101e4)
2
#
(9.361e
b
6)
2
]
(
(/2
1.318e
b
4
1.384e
b
5
b
1
J
e
18.35 nF
R2
e
1.318e
b
4
18.35e
b
9
e
7.18 k
X
if we choose R3
e
120k; then C3
e
9.361e
b
6
120e3
e
78 pF.
Converting to standard component values gives the follow-
ing filter values, which are shown in Figure 4.
C1
e
2200 pF
R2
e
8.2 k
X
C2
e
0.018
m
F
R3
e
120 k
X
C3
e
78 pF
Note 1:
See related equation for K
w
in Charge Pump Current Specification
Definitions. For this example V
P
e
5.0V. The value for K
w
can then
be approximated using the curves in the Typical Performance Char-
acteristics for Charge Pump Current vs D
o
Voltage. The units for K
w
are in mA. You may also use K
w
e
(5 mA/2
q
rad), but in this case
you must convert K
VCO
to (rad/V) multiplying by 2
q
.
TL/W/12340–41
FIGURE 4.
E
5 kHz Loop Filter
17
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| LMX15010AM | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.1 GHz Frequency Synthesizer for RF Personal Communications(367.82 k) |
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| LMX1501AM | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinumTM 1.1 GHz Frequency Synthesizer for RF Personal Communications |
| LMX1501AMX | 功能描述:IC FREQ SYNTHESIZR 1.1GHZ 16SOIC RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時(shí)鐘 輸出:時(shí)鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無(wú)/無(wú) 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| LMX1511 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinumTM 1.1 GHz Frequency Synthesizer for RF Personal Communications |
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