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參數(shù)資料
| 型號： | P14827EJ1V0AN00 |
| 英文描述： | uPB1005K RF/IF Down-Converter+PLL Frequency Synthesizer ICs for GPS Receivers |
| 中文描述： | uPB1005K射頻/中頻下變頻器鎖相環(huán)頻率合成器的GPS接收機(jī) |
| 文件頁數(shù)： | 10/23頁 |
| 文件大?。?/td> | 188K |
| 代理商： | P14827EJ1V0AN00 |
10
Preliminary Application Note P14822EJ2V0AN
Figure 4-1. Examples of External Circuit Configurations (
μ
PC8172TB) (1/2)
1 F
68 pF 1 F
6
5
4
RFoutput
V
CC
PS
IFinput
GND
LOinput
1
2
3
100 pF
RF = 0.9 GHz matching
C
1
L
1
1 000 pF
C
3
C
2
L
2
IF matching
100 pF
1 F
30 pF 1 F
6
5
4
RFoutput
V
CC
PS
IFinput
GND
LOinput
1
2
3
100 pF
RF = 1.9 GHz matching
C
1
L
1
1 000 pF
C
1
L
1
C
3
C
2
L
2
IF matching
100 pF
1 F
10 pF 1 F
6
5
4
RFoutput
V
CC
PS
IFinput
GND
LOinput
1
2
3
100 pF
RF = 2.4 GHz matching
1 000 pF
C
3
C
2
L
2
IF matching
100 pF
When f
RFout
= 0.9 GHz matching
When f
RFout
= 1.9 GHz matching
When f
RFout
= 2.4 GHz matching
From previous stage
From local oscillator
Strip line
From controller
To next stage
(RF filter, etc.)
From power
supply
From previous stage
From local oscillator
Strip line
From controller
To next stage
(RF filter, etc.)
From power
supply
From previous stage
From local oscillator
From controller
To next stage
(RF filter, etc.)
From power
supply
Strip line
Remarks 1.
Determine L
1
and C
1
according to the frequency and the RF port's S-parameter, including the strip line
length on the mounting surface.
2.
High-pass type output matching is used for f
RFout
= 0.9 GHz and low-pass type output matching is used
for f
RFout
= 1.9 GHz and f
RFout
= 2.4 GHz.
3.
Determine whether or not matching is required for input according to how the input relates to the
previous stage's impedance.
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