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SKY65066-360LF

更新时间： 2024-02-23 07:51:57
品牌 Logo 应用领域
思佳讯 - SKYWORKS 电信集成电路蜂窝电话电路电信电路放大器光电二极管
页数 文件大小 规格书
11页 260K
描述
2.3-2.7 GHz Low Noise Amplifier

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SKY65066-360LF 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：QFN
包装说明：HVSON,针数：8
Reach Compliance Code：unknownHTS代码：8542.39.00.01
风险等级：5.83Is Samacsys：N
JESD-30 代码：S-PDSO-N8JESD-609代码：e3
长度：2 mm湿度敏感等级：1
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1 mm标称供电电压：5 V
表面贴装：YES电信集成电路类型：RF FRONT END CIRCUIT
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：2 mmBase Number Matches：1

SKY65066-360LF 数据手册

 浏览型号SKY65066-360LF的Datasheet PDF文件第1页浏览型号SKY65066-360LF的Datasheet PDF文件第3页浏览型号SKY65066-360LF的Datasheet PDF文件第4页浏览型号SKY65066-360LF的Datasheet PDF文件第5页浏览型号SKY65066-360LF的Datasheet PDF文件第6页浏览型号SKY65066-360LF的Datasheet PDF文件第7页 
DATA SHEET • SKY65066-360LF LOW NOISE AMPLIFIER  
Table 1. SKY65066-360LF Signal Descriptions  
Pin #  
Name  
Description  
Pin #  
Name  
FEEDBACK  
Description  
1
BIAS1  
Source lead for 1st stage transistor  
5
Connect to RFOUT/VDD2 to reduce gain of  
2nd stage transistor  
2
3
RFIN  
N/C  
RF input  
6
7
N/C  
No connection  
No connection  
RFOUT/VDD2  
RF output. Requires a DC bias using an RF  
choke inductor.  
4
VDD1  
1st stage DC power supply  
8
BIAS2  
Source lead for 2nd stage transistor  
Source Inductance  
Functional Description  
The SKY65066-360LF is a two stage LNA with an integrated  
interstage matching network and source inductors. The device  
has a tested low NF of 0.7 dB and gain of 16.5 dB. The device  
allows designers to adjust current and gain without degrading the  
NF.  
The source inductance required on pins 1 and 8 (BIAS1 and BIAS2  
signals, respectively) has been integrated on the die. This  
simplifies board layout and reduces build variations.  
Input and Output RF Matching Network  
The external matching network largely dictates the RF  
performance of the device. The matching network is required for  
operation and special care should be taken when designing a  
circuit board layout for the SKY65066-360LF. There are four  
separate groups of external components: input, output, biasing,  
and feedback.  
The input band-pass matching network consists of four  
components. Component C1 serves as the input DC blocking  
capacitor, C2 provides high frequency stability and improved input  
return loss, and L1 and L2 are responsible for the best noise  
match looking into the gate of the first stage amplifier.  
Excess board trace should be eliminated at the input of the device  
to minimize board losses. High-Q components should be used to  
achieve the best NF of the amplifier. Murata GJM series  
capacitors and Coilcraft HP or CS series inductors are  
recommended. Any excess board or component loss on the input  
of the device directly adds to the total measured NF.  
Biasing  
To properly bias a depletion mode pHEMT, both the gate and  
drain of the device must be biased properly. At VGS = 0 V and  
VDS > 2 V, the amplifier stage is in its saturated state and draws  
the maximum amount of current, IDSS. A VDS of 5 V is  
recommended to ensure proper performance.  
The output matching network is band-pass network optimized for  
output return loss.  
To eliminate the need for a negative DC supply, self-biasing  
should be used when a resistor is placed between one of the  
source leads and ground. A bypass capacitor should be placed in  
parallel to this resistor to provide an RF ground and to ensure  
performance remains unchanged at the operating frequency.  
The SKY65066-360LF Evaluation Board assembly diagram is  
shown in Figure 13 and a circuit schematic is provided in  
Figure 14.  
Feedback  
When current flows from drain to source and through the resistor,  
the source voltage becomes biased above DC ground. The gate  
pin of the device should be left unbiased at 0 V, which creates the  
desired negative VGS value. This simplifies the design by  
eliminating the need for a second DC supply. Values for resistor  
components R1 and R2 can be changed to easily increase or  
decrease the bias current to a desired level.  
Feedback is implemented in the recommended circuit on the 2nd  
stage transistor. Feedback improves the input and output return  
loss and high frequency stability. The gain of the device can be  
increased by increasing the value of R3, which reduces the  
amount of feedback present (gain for multiple feedback resistor  
values is shown in Figure 12).  
The first stage is biased at 20 percent of IDSS to achieve the best  
NF performance. The gain and current of the 2nd stage amplifier  
can be adjusted without degrading the overall NF. More current in  
the 2nd stage yields better IP3 performance.  
Biasing components R1, R2, C1, and C2 should be placed as  
close to the package pins as possible. See Figure 12 for the  
recommended board layout.  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
November 12, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201090E  
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SKY65066-360LF 替代型号

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