Datasheet > 射频和微波 > 射频/微波放大器> ALM-1412-TR1G

ALM-1412-TR1G

更新时间： 2024-02-15 08:42:58

品牌	Logo	应用领域
安华高科 - AVAGO		射频和微波射频放大器微波放大器全球定位系统
页数	文件大小	规格书
16页	192K
描述
GPS LNA-Filter Front-End Module

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ALM-1412-TR1G 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	MODULE,12LEAD,.13	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.8	Is Samacsys：	N
其他特性：	CMOS COMPATIBLE	特性阻抗：	50 Ω
构造：	COMPONENT	增益：	11 dB
最大输入功率 (CW)：	15 dBm	功能数量：	1
端子数量：	12	最大工作频率：	1575 MHz
最小工作频率：		封装主体材料：	PLASTIC/EPOXY
封装等效代码：	MODULE,12LEAD,.13	电源：	1/2.85 V
射频/微波设备类型：	WIDE BAND LOW POWER	子类别：	RF/Microwave Amplifiers
最大压摆率：	15 mA	技术：	GAAS
Base Number Matches：	1

ALM-1412-TR1G 数据手册

1, 4

Vdd

GND

INPUT

MATCH

FILTER

50-Ohms TL

2, 4, 5, 6, 7, 9, 10, 11

MODULE OUTLINE

Figure 2. Demoboard and application schematic diagram

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 RFin pin, pin 1, is directly connected to a shunt inductor

that is grounded. The RF output ﬁlter blocks DC.

•

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 return 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 respectively. 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.

•

1 2 3 456 7 8...16

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