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参数资料
| 型号： | ACPM-7371-TR1 |
| 元件分类： | 放大器 |
| 英文描述： | 880 MHz - 915 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
| 封装： | 4 X 4 MM, 1.10 MM HEIGHT, ROHS COMPLIANT PACKAGE-10 |
| 文件页数： | 14/15页 |
| 文件大小： | 850K |
| 代理商： | ACPM-7371-TR1 |
8
CoolPAM
Avago Technologies’CoolPAM is stage-bypass PA technol-
ogy which saves more power compared with convention-
al PA. With this technology, the ACPM-7371 has very low
quiescent current and efficiencies at low and medium
output power ranges are very high.
Incorporation of bias circuit
The ACPM-7371 has internal bias circuit, which removes
the need for external constant voltage source (LDO). PA
on/off is controlled by Ven. This is digitally control pin.
3-mode power control with two mode control pins
The ACPM-7371 supports three power modes (low power
mode/mid power mode/high power mode) with two
mode control pins (Vmode0 and Vmode1). This control
scheme enables the ACPM-7371 to save more power,
which accordingly gives extended talk time.
PDF (probability density function) in below figure
showing distribution of output power of mobile in real
field gives motivation for stage-bypass PA. Output power
is less than 16dBm for most of operating time (during
talking), so it is important to save power consumption at
low and medium output power ranges.
Average current & Talk time
Average current consumed by PA can be calculated by
summing up current at each output power weighted
with probability. So it is expressed with integration of
multiplication of current and probability at each output
power.
Talk time is extended more as average current consump-
tion is lowered.
Mode control pins
Vmode0 and Vmode1 are digitally controlled pins and
they control operating mode of PA and truth table
is summarized in Table 3. These pins do not require
constant voltage for interface, and 1.9V is recommend at
Vmode0 and Vmode1 pins.
Application on mobile board
Below figure shows one application example on mobile.
C4 and C5 should be placed nearby pin1 and pin10.
Transmission line length after PA output should be
minimized to reduce conduction loss. When output
voltage of mode control pins at base-band chipset
is 2.6V, series resistor of 2Kohm is recommended for
Vmode0 and 4.7kohm for Vmode1.
Figure 10. PDF and Current
C7
C8
BB
C3
L1
output matching circuit
ACPM -7371
PA_R1
PA_R0
PA_ON
C2
TX
lter
RF In
Coupler
RF Out
C1
C9
C6
V BATT
C4
C5
R2
4.7k
R1
2k
Ven
Vmode0
Vmode1
IN
Vcc1
Vcc2
GND
OUT
Figure 11. ACPM-7371 Application Example
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ACPM-7372-BLK | 功能描述:射频放大器 UMTS PA Module Band 8 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
| ACPM-7372-TR1 | 功能描述:射频放大器 UMTS PA Module Band 8 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
| ACPM-7381 | 制造商:Avago Technologies 功能描述:1920 MHz - 1980 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| ACPM-7381-BLK | 功能描述:射频放大器 UMTS2100 Power Amp Module RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
| ACPM-7381-BLKR | 功能描述:射频放大器 UMTS2100 Power Amp Module RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
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