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參數資料
| 型號： | ALM-1412-TR1G |
| 元件分類： | 放大器 |
| 英文描述： | 0 MHz - 1575 MHz RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| 封裝： | 3.30 X 2.10 MM, 1.10 MM HEIGHT, LEAD FREE PACKAGE-12 |
| 文件頁數： | 14/17頁 |
| 文件大小： | 829K |
| 代理商： | ALM-1412-TR1G |
6
Figure 7. Demoboard and application schematic diagram
GND
1, 4
Vdd
R1
L2
R2
C2
50-Ohms TL
L3
1
2
2, 4, 5, 6, 7, 9, 10, 11
8
C9
3
L1
12
C1
C3
3
Z1
50-Ohms TL
MODULE OUTLINE
INPUT
MATCH
FILTER
SD
Notes:
The demoboard of Figure 6 is Rogers RO4350 with typical Dk=3.48 (@10GHz).
L3 and the module’s internal input pre-match form the input matching network. The module has built-in DC-block-
ing capacitors at the input and output.
This circuit demonstrates that very low noise figure is obtainable with standard 0402 chip inductors instead of
high-Q wirewound inductors.
C2 and L2 form a matching network at the output of the LNA stage, which can be tuned to optimize gain and re-
turn loss. For example, higher gain can be obtained by increasing the value of C2 but at the expense of stability.
Changing the value of L2 can improve the PCS rejection, but impacts output return loss.
L1 is a choke which isolates the demoboard from external disturbances during measurement. It is not needed in
actual application. Likewise, C1 and C3 mitigate the effect of external noise pickup on the Vdd and SD lines respec-
tively. These components are not required in actual operation.
R1 is a stability-enhancing resistor.
C9 is a DC-blocking capacitor. It is also not required in actual operation.
Bias control is achieved by either varying the SD voltage (Vsd) with/without R2, or fixing the SD voltage to Vdd and
adjusting R2 for the desired current. Typical value for R2 is 10k Ohms for 8 mA total current at Vdd = 2.85 V and
Vsd = +2.60 V. For applications where it is more appropriate to have SD (Vsd) connected to Vdd, a 12 k Ohms resistor
value for R2 is suggested (where Vdd = 2.85 V).
For low-voltage operation such as Vdd = 1.5 V or 1.0 V, R2 may be omitted and SD (Vsd) connected directly to Vdd.
The grounding regime for the ALM-1412 is critical to achieving the PCS- and Cell-Band Rejections shown in
Figure 9. Please refer to the PCB Land Patterns section of this document for the exact locations of the grounding
vias.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ALM-1412-TR2G | 功能描述:射頻放大器 GPS LNA with Filter 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:37.5 dBm 功率增益類型:32 dB 噪聲系數: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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| ALM-1522-BLKG | 功能描述:射頻放大器 900MHz Balanced LNA 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:37.5 dBm 功率增益類型:32 dB 噪聲系數: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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| ALM-1522-TR1G | 功能描述:射頻放大器 900MHz Balanced LNA 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:37.5 dBm 功率增益類型:32 dB 噪聲系數: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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| ALM-1522-TR2G | 功能描述:射頻放大器 900MHz Balanced LNA 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:37.5 dBm 功率增益類型:32 dB 噪聲系數: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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| ALM-1612 | 制造商:Avago 功能描述:GPS LNA-Filter Front-End Module |
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