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參數(shù)資料
| 型號： | UPC8120T-E3 |
| 廠商： | NEC Corp. |
| 英文描述： | VARIABLE GAIN AMPLIFIER SILICON MMIC FOR TRANSMITTER AGC OF DIGITAL CELLULAR TELEPHONE |
| 中文描述： | 可變增益放大器硅單片發(fā)射機(jī)數(shù)字蜂窩電話自動增益控制 |
| 文件頁數(shù)： | 3/52頁 |
| 文件大小： | 550K |
| 代理商： | UPC8120T-E3 |
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3
μ
PC8119T,
μ
PC8120T
PIN EXPLANATION
Pin
No.
Pin Name
Applied
Voltage
V
Pin
Voltage
V
Note
Function and Applications
Internal Equivalent Circuit
1
IN
–
1.2
RF input pin. This pin should be
coupled with capacitor (eg 1000
pF) for DC cut. This pin can be
input from 50
impedance signal
source without matching circuit.
2
3
GND
0
–
Ground pin. This pin should be
connected to system ground with
minimum inductance. Ground
pattern on the board should be
formed as wide as possible.
4
OUT
Voltage
as same
as V
CC
through
external
inductor
–
RF output pin. This pin is
designed as open collector of
high impedance.
This pin must be externally
equipped with matching circuits.
1
2
3
5
4
Bias
circuit
Control
circuit
5
V
CC
2.7 to 3.3
–
Supply voltage pin. This pin must
be externally equipped with low
pass filter (eg
π
type) in order to
suppress leakage from input pin.
This pin also must be equipped
with bypass capacitor (eg 1000
pF) to minimize ground
impedance.
Gain control pin. The relation
between product number and
control performance is shown
below;
Part No.
V
AGC
up vs. Gain
μ
PC8119T
down
μ
PC8120T
up
6
V
AGC
0 to 3.3
–
Control
circuit
2
3
5
6
Note
Pin voltage is measured at V
CC
= 3.0 V.
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