參數(shù)資料
型號(hào)： RMPA2259
廠(chǎng)商： FAIRCHILD SEMICONDUCTOR CORP
元件分類(lèi)： 衰減器
英文描述： 28 dBm WCDMA PowerEdge Power Amplifier Module
中文描述： 1920 MHz - 1980 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER
封裝： 4 X 4 MM, 1.50 MM HEIGHT, LEAD FREE, LCC-10
文件頁(yè)數(shù)： 4/11頁(yè)
文件大小： 235K
代理商： RMPA2259
R
T
P
2005 Fairchild Semiconductor Corporation
RMPA2259 Rev. E
4
www.fairchildsemi.com
Figure 5.
RMPA2259 W-CDMA 4x4mm
2
PAM
Vref = 2.85V, Pout = 16dBm
RMPA2259 W-CDMA 4x4mm
2
PAM
Vref = 2.85V, Pout = 16dBm
A
FREQUENCY (MHz)
V
CC
V
CC
= 3.4V
V
CC
= 3.4V
V
CC
= 3.0V
V
CC
= 2.0V
V
CC
= 2.0V
V
CC
= 1.5V
V
CC
= 1.5V
V
CC
= 1.2V
V
CC
= 1.2V
20
1900
21
22
23
26
25
26
27
28
29
30
2000
1980
1960
1940
1920
FREQUENCY (MHz)
2000
1980
1960
1940
1920
1900
FREQUENCY (MHz)
2000
1980
1960
1940
1920
1900
Figure 6.
FREQUENCY (MHz)
5
1900
10
15
20
25
30
2000
1980
1960
1940
1920
-55
-53
-51
-49
-47
-45
-43
-41
-39
-37
-35
Figure 7.
RMPA2259 W-CDMA 4x4mm
2
PAM
Vref = 2.85V, Pout = 16dBm
RMPA2259 W-CDMA 4x4mm
2
PAM
Vref = 2.85V, Pout = 16dBm
G
Figure 8.
P
V
CC
= 2.0V
V
CC
V
CC
= 1.5V
V
CC
= 3.0V
V
CC
= 3.0V
V
CC
= 3.4V
V
CC
= 2.0V
V
CC
= 1.5V
V
CC
= 1.2V
V
CC
= 1.2V
A
-70
-68
-66
-64
-62
-60
-58
-56
-54
-52
-50
Efficiency Improvement Application
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 frequently operate at 10–
20dB 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.
The following charts show measured performance of the
PA module in low-power mode (Vmode = +2.0V) at
+16dBm output power and over a range of supply voltages
from 3.4V nominal 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 -46dBc and
ACLR2 of approximately -60dBc.
Operation at even lower levels of Vcc supply voltage are
possible with a further restriction on the maximum RF
output power. As shown below, the PA module can be
biased at a supply voltage of as low as 0.7V with an
efficiency as high as 10–12 percent at +8dBm output
power. Excellent signal linearity is still maintained even
under this low supply voltage condition.
Performance Data
(continued)
Low-Power Mode (Po = +16dBm)
相關(guān)PDF資料
PDF描述
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RMPA2271 WCDMA/UMTS Power Edge Power Amplifier Module with Integrated Power Detector
RMPA2450 2.4-2.5 GHz GaAs MMIC Power Amplifier
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RMPA2259G 制造商:Rochester Electronics LLC 功能描述: 制造商:Fairchild Semiconductor Corporation 功能描述:
RMPA2263 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:WCDMA Power Amplifier Module 1920-1980 MHz
RMPA2265 功能描述:射頻放大器 1850-1910 MHZ/1920- 1980 MHZ DUAL BAND RoHS:否 制造商:Skyworks Solutions, Inc. 類(lèi)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(lèi)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
RMPA2266 制造商:Rochester Electronics LLC 功能描述: 制造商:Fairchild Semiconductor Corporation 功能描述:
RMPA2271 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:WCDMA/UMTS Power Edge Power Amplifier Module with Integrated Power Detector
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