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參數(shù)資料
| 型號(hào)： | RMPA2271 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 衰減器 |
| 英文描述： | WCDMA/UMTS Power Edge Power Amplifier Module with Integrated Power Detector |
| 中文描述： | 1920 MHz - 1980 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| 封裝： | 3 X 3 MM, 1 MM HEIGHT, LEAD FREE, LCC-8 |
| 文件頁(yè)數(shù)： | 5/9頁(yè) |
| 文件大?。?/td> | 373K |
| 代理商： | RMPA2271 |
5
www.fairchildsemi.com
RMPA2271 Rev. B
R
PRELIMINARY
Efficiency Improvement Applications
In addition to high-power/low-power bias modes, the efficiency of the PA module can be significantly increased at backed-off RF
power levels by dynamically varying the supply voltage (Vcc) applied to the amplifier. Since mobile handsets and power amplifiers fre-
quently operate at 10-20 dB back-off, or more, from maximum rated linear power, battery life is highly dependent on the DC power
consumed at antenna power levels in the range of 0 to +16dBm. The reduced demand on transmitted RF power allows the PA supply
voltage to be reduced for improved efficiency, while still meeting linearity requirements for WCDMA modulation with excellent margin.
High-efficiency DC-DC converters are now available to implement switched-voltage operation.
With the PA module in low-power mode (Vmode = +2.0V) at+16dBm output power and supply voltages reduced from 3.4V nominal
down to 1.2V, power-added efficiency is more than doubled from 9.5 percent to nearly 25 percent (Vcc = 1.2V) while maintaining a
typical ACLR1 of –40dBc and ACLR2 of less than –54dBc. Operation at even lower levels of Vcc supply voltage are possible with a
further restriction on the maximum RF output power.
Recommended Operating Conditions
DC Turn On Sequence:
1. Vcc1 = Vcc2 = 3.4V (typical)
2. Vref = 2.85V (typical)
3. High-Power: Vmode = 0V (Pout > 16dBm)
Low-Power: Vmode = 2.0V (Pout < 16dBm)
Symbol
Parameter
Min
Typ
Max
Units
f
Operating Frequency
1920
1980
MHz
Vcc1, Vcc2
Supply Voltage
3.0
3.4
4.2
V
Vref
Reference Voltage
(Operating)
(Shutdown)
2.7
0
2.85
3.1
0.5
V
V
Vmode
Bias Control Voltage
(Low-Power)
(High-Power)
1.8
0
2.0
3.0
0.5
V
V
Pout
Linear Output Power
(High-Power)
(Low-Power)
+28
+16
dBm
dBm
Tc
Case Operating Temperature
-30
+85
°C
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RMPA2450 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:2.4-2.5 GHz GaAs MMIC Power Amplifier |
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| RMPA2451-TB | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:2.4?2.5 GHz GaAs MMIC Power Amplifier |
| RMPA2453 | 功能描述:射頻放大器 2.4-2.5 GHz InGaP HBT Linear Power Amp 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 |
| RMPA2455 | 功能描述:射頻放大器 2.4-2.5 GHz 1 Watt InGaP HBT 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 |
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