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RF2103PPCBA 参数 Datasheet PDF下载

RF2103PPCBA图片预览
型号: RF2103PPCBA
PDF下载: 下载PDF文件 查看货源
内容描述: 中功率线性放大器 [MEDIUM POWER LINEAR AMPLIFIER]
分类和应用: 放大器
文件页数/大小: 10 页 / 194 K
品牌: RFMD [ RF MICRO DEVICES ]
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RF2103P  
Pin  
14  
Function Description  
Interface Schematic  
Amplifier RF output. This is an unmatched collector output of the final  
amplifier transistor. It is internally connected to pins 8, 9, 13 and 14 to  
provide low series inductance and flexibility in output matching. Bias for  
the final power amplifier output transistor must also be provided  
through two of these four pins. Typically, pins 8 and 9 are connected to  
a network that provides the DC bias and also creates a second har-  
monic trap. For 915MHz operation, this harmonic trap network is simply  
a single 2pF capacitor from both pins to ground. This capacitor series  
resonates with internal bond wires at two times the operating fre-  
quency, effectively shorting out the second harmonic. Shorting out this  
harmonic serves to increase the amplifier’s maximum output power and  
efficiency, as well as to lower the level of the second harmonic output.  
Typically, pins 13 and 14 are externally connected very close to the  
package and used as the RF output with a matching network that pre-  
sents the optimum load impedance to the PA for maximum power and  
efficiency, as well as providing DC blocking at the output. Shunt protec-  
tion diodes are included to clip peak voltage excursions above approxi-  
mately 15V to prevent voltage breakdown in worst case conditions.  
RF OUT  
2
Application Schematic  
6.8 nH  
12 nH  
22  
RF OUT  
RF IN  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
FPA  
PRE AMP  
C1  
L1  
For lower frequency  
operation: Cut trace  
on board and insert  
inductor L3  
100 pF  
VB  
VCC  
BIAS  
CIRCUITS  
For lower frequency  
operation: Cut trace  
on board and insert  
inductor L4  
1
100  
pF  
µ
F
VCC  
L2  
8
.01" x .2"  
(PCB material: FR-4,  
Thickness:0.031")  
100 pF  
C2  
330 pF  
FREQUENCY (MHz) L1 (nH) L2 (nH) L3 (nH) L4 (nH) C1 (pF) C2 (pF)  
275  
480  
915  
20  
12  
15  
6.8  
3.3  
10  
20  
18  
20  
12  
4
10  
6.8  
2
4.7  
6.8  
2-4  
Rev B1 010720