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參數(shù)資料
| 型號(hào)： | P12763EJ1V0AN00 |
| 英文描述： | MCU CMOS 28 LD 20MHZ 8K FLASH, -40C to +85C, 28-SPDIP, TUBE |
| 中文描述： | uPC8119T和uPC8120T可變?cè)鲆娓哳l硅單片放大器的AGC移動(dòng)通信股 |
| 文件頁數(shù)： | 10/19頁 |
| 文件大?。?/td> | 159K |
| 代理商： | P12763EJ1V0AN00 |
10
Figure 5-1. Example of External Circuit Configuration
Matching at f = 950 MHz or 1440 MHz
C1, C3 through C7 : 1000 pF
L2
: 4.7 nH
Determine L1 and C2 based on the S parameter of pin 4, including the strip line length of the board and according to the
frequency. Connect output matching inductor L1 to outside the
S
ype circuit (not to the IC side).
3
2
1
4
5
6
Gain
control
block
C1
Input
Output matching circuit
Strip line
Output
To power supply
Bypass capacitor
type circuit
π
Feedback capacitor
(connects pins 5 and 6)
To control
circuit
C2
C5
C6
C3
C4
C7
L1
L2
Determine whether matching is necessary for input, depending on the relation with the impedance of the preceding stage.
The output matching is of high-pass type. The circuit format is the same
at 950 and 1440 MHz. The output matching constants differ depending on
the frequency used.
Matching at f = 1900 MHz
C1, C3 through C7 : 1000 pF
L2
: 4.7 nH
Determine L1, C2, and C8 based on the S parameter of pin 4, including the strip line length of the board and according to the
frequency. Connect output matching inductor L1 to outside the
S
ype circuit (not to the IC side).
3
2
1
4
5
6
Gain
control
block
C1
Input
Output matching circuit
Strip line
Output
To power supply
Bypass capacitor
type circuit
Feedback capacitor (connects pins 5 and 6)
To control
circuit
C2
C5
C6
C8
C3
C4
C7
L1
L2
π
Determine whether matching is necessary for input, depending on the relation with the impedance of the preceding stage.
The output matching is of low-pass type. The minimum gain is higher than
that shown in the Data Sheet in the case of high-pass matching.
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