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參數(shù)資料
| 型號(hào)： | RF2138PCBA |
| 廠商： | RF Micro Devices, Inc. |
| 英文描述： | 3V GSM POWER AMPLIFIER |
| 中文描述： | 3V的的GSM功率放大器 |
| 文件頁(yè)數(shù)： | 9/10頁(yè) |
| 文件大小： | 145K |
| 代理商： | RF2138PCBA |
2-127
RF2138
Rev A9 011031
2
P
SeeUpgradedProductRF2173
Typic al Test Setup
Power Supply
V- S- S+ V+
10dB/5W
3dB
RF Generator
Spectrum
Analyzer
Buffer
x1 OpAmp
Puls
Generator
A buffer amplifier is recommended because the current into
the Vapc changes with voltage. As an alternative, the
voltage may be monitored with an oscilloscope.
Notes about testing the RF2138
The test setup shown above includes two attenuators. The 3dB pad at the input is to minimize the effects that the
switching of the input impedance of the PA has on the signal generator. When Vapc is switched quickly, the resulting
input impedance change can cause the signal generator to vary its output signal, either in output level or in frequency.
Instead of an attenuator an isolator may also be used. The attenuator at the output is to prevent damage to the spec-
trum analyzer, and should be able to handle the power.
It is important not to exceed the rated supply current and output power. When testing the device at higher than nominal
supply voltage, the V
APC
should be adjusted to avoid the output power exceeding +36dBm. During load-pull testing at
the output it is important to monitor the forward power through a directional coupler. The forward power should not
exceed +36dBm, and V
APC
needs to be adjusted accordingly. This simulates the behavior for the power control loop in
this respect. To avoid damage, it is recommended to set the power supply to limiting the current during the burst, not to
exceed the maximum current rating.
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| RF2138 | 3V GSM POWER AMPLIFIER |
| RF2140 | 3V DCS POWER AMPLIFIER |
| RF2140PCBA | 3V DCS POWER AMPLIFIER |
| RF2145 | DCS1800/1900 POWER AMPLIFIER |
| RF2145PCBA | DCS1800/1900 POWER AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RF2139-000 | 功能描述:可復(fù)位保險(xiǎn)絲 RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C |
| RF2140 | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:3V DCS POWER AMPLIFIER |
| RF2140-000 | 功能描述:可復(fù)位保險(xiǎn)絲 RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C |
| RF2140PCBA | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:3V DCS POWER AMPLIFIER |
| RF2141-000 | 功能描述:可復(fù)位保險(xiǎn)絲 RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C |
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