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參數(shù)資料
| 型號： | RMPA1965 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 衰減器 |
| 英文描述： | US-PCS CDMA, CDMA2000-1X and WCDMA PowerEdge Power Amplifier Module |
| 中文描述： | 1850 MHz - 1910 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| 封裝： | 3 X 3 MM, 1 MM HEIGHT, LEAD FREE PACKAGE-8 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 111K |
| 代理商： | RMPA1965 |
5
www.fairchildsemi.com
RMPA1965 Rev. I
R
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 CDMA 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 ACPR1 of –52dBc and ACPR2 of less than –61dBc. 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 > 16 dBm)
Low-Power: Vmode = 2V (Pout < 16 dBm)
Symbol
Parameter
Min
Typ
Max
Units
f
Operating Frequency
1850
1910
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 |
|---|---|
| RMPA1965_06 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:US-PCS CDMA, CDMA2000-1X and WCDMA PowerEdge TM Power Amplifier Module |
| RMPA1966 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:WCDMA Band II Power Amplifier Module |
| RMPA1966_07 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:WCDMA Band II Power Amplifier Module |
| RMPA1967 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:US-PCS CDMA, CDMA2000-1X and WDCMA Power Edge? Power Amplifier Module |
| RMPA2059 | 功能描述:射頻放大器 3V WCDMA PA 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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