參數(shù)資料
型號(hào)： MAX4473
廠商： Maxim Integrated Products, Inc.
英文描述： Low-Cost, Low-Voltage, PA Power Control Amplifier for GSM Applications in 8-Pin レMAX
中文描述： 低成本、低電壓、PA功率控制放大器，用于GSM應(yīng)用
文件頁數(shù)： 5/6頁
文件大?。?/td> 140K
代理商： MAX4473
S ense Resistor S elec tion (R
S ENS E
)
Choose R
SENSE
based on the following criteria:
Voltage Loss:
A high R
SENSE
value causes the
power-source voltage to degrade through IR loss.
For minimal voltage loss, use low R
SENSE
values.
Accuracy:
A high R
SENSE
value allows lower cur-
rents to be measured more accurately because input
offset voltages become less significant when the
sense voltage is larger. For best performance, select
R
SENSE
to provide approximately 100mV of sense
voltage for the full-scale current in each application.
Efficiency and Power Dissipation:
At high current
levels, the I
2
R losses in R
SENSE
are significant. Take
this into consideration when choosing the resistor
value and its power dissipation (wattage) rating.
Also, the sense resistor’s value may drift if it is
allowed to heat up excessively.
M
Low-Cost, Low-Voltage, PA Power Control
Amplifier for GS M Applic ations in 8-Pin μMAX
_______________________________________________________________________________________
5
_________________________Test Circ uit
2N3904
SR1
GND
R
SENSE
SR2
OUT
SR3
PC
SHDN
V
CC
V
CC
C
L
300pF
R
L
10k
RG1
1k
1%
RG2
1k
1%
RG3
2.5k
1%
100
0.1%
0.1μF
MAX4473
R
E
750
Pin Configuration
SR3
GND
PC
1
2
8
7
V
CC
OUT
SR2
SR1
μMAX/SO
TOP VIEW
3
4
6
5
MAX4473
SHDN
Chip Information
TRANSISTOR COUNT: 348
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4473C/D DIE 制造商:Maxim Integrated Products 功能描述:
MAX4473ESA 功能描述:功率放大器 PA Power Control Amp for GSM Aps RoHS:否 制造商:TriQuint Semiconductor 封裝 / 箱體: 工作電源電壓:28 V 電源電流:2.5 A 工作溫度范圍: 封裝:
MAX4473ESA-T 功能描述:射頻放大器 PA Power Control Amp for GSM Aps RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel
MAX4473ETA 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX4473ETA-T 制造商:Maxim Integrated Products 功能描述:LOW-COST, LOW-VOLTAGE, PA POWER CONTROL AMPLI - Tape and Reel
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