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參數(shù)資料
| 型號(hào)： | P12152EJ3V0AN00 |
| 英文描述： | uPC1678G/1678GV/1679G. uPC2708T to 2710T. uPC2762T/2763T. uPC2771T/2776T Silicon Medium-Power High-Frequency Amplifier MMIC |
| 中文描述： | uPC1678G/1678GV/1679G。 uPC2708T到2710T。 uPC2762T/2763T。 uPC2771T/2776T硅中功率高頻單片放大器 |
| 文件頁數(shù)： | 12/35頁 |
| 文件大小： | 291K |
| 代理商： | P12152EJ3V0AN00 |
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Application Note P12152EJ3V0AN00
12
3. THEORETICAL DESCRIPTION
3.1 Description of Internal Circuit
The products in this series incorporate 50
:
matching circuits formed by resistors on the input side. A multiple
negative feedback circuit is provided to offset the variations between h
FE
and resistance. To obtain desired RF
characteristics, a two-stage configuration is employed. Products in this series use the Darlington collector output
type for the internal output stage. This output stage collector is ended as an output pin that enables current supply
from this pin so that a medium output can be obtained.
For the test environment, Bias-T is mainly used to verify the characteristics in the wide band because the
frequency characteristics are not affected. On the other hand, by using an inductor with the minimum required value,
the gain in the high-frequency range increases by the amount that the gain in the low-frequency decreases and the
band shifts to high-frequency. The gain change varies depending on the effect of the two-stage peaking capacitance
that is connected to the internal equivalent circuit output port. The circuit constant differs depending on the product.
However, the products can be classified into five types,
P
PC1678/1679,
P
PC2708 to 2710,
P
PC2762/2763/2771,
and
P
PC2776, based on the internal circuit type. An internal equivalent circuit is shown in Figure 3-1.
Figure 3-1. Silicon Medium-Power Amplifier IC Internal Equivalent Circuit
P
PC1678/1679
P
PC2708 to 2710
<5>
<8>
<1>
IN
<6>
<7>
<2>
<4>
<3>
GND
V
CC
OUT
2, 3, 4, 6, and 7 are shorted by a lead frame
GND
<6>
<4>
<1>
IN
V
CC
OUT
GND
GND
<2>
<3>
<5>
P
PC2762/2763
P
PC2771
<6>
<4>
<1>
IN
V
CC
OUT
GND
GND
PC2762 does not have this capacitance
μ
<2>
<3>
<5>
<6>
<4>
<1>
IN
V
CC
OUT
GND
GND
<2>
<3>
<5>
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