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100X07X103MV4T 参数 Datasheet PDF下载

100X07X103MV4T图片预览
型号: 100X07X103MV4T
PDF下载: 下载PDF文件 查看货源
内容描述: [X2Y® FILTER & DECOUPLING CAPACITORS]
分类和应用: LTE联轴器
文件页数/大小: 8 页 / 1220 K
品牌: JOHANSON [ JOHANSON TECHNOLOGY INC. ]
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X2Y FILTER & DECOUPLING  
CAPACITORS  
The X2Y® Design - A Balanced, Low ESL, “Capacitor Circuit”  
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The X2Y capacitor design starts with standard 2 terminal MLC capacitor’s opposing electrode sets, A & B, and adds a third electrode set (G) which surround  
each A & B electrode. The result is a higly vesatile three node capacitive circuit containing two tightly matched, low inductance capacitors in a compact, four-  
terminal SMT chip.  
X2Y® Circuit 1: Filtering  
Circuit 1 connects the X2Y filter capacitor across two signal lines. Common-mode noise is filtered to ground (or  
Signal 1  
A
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G1  
G2  
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reference) by the two Y-capacitors, A & B. Because X2Y is a balanced circuit that is tightly matched in both  
Ground  
Signal 2  
phase and magnitude with respect to ground, common-to-differential mode noise conversion is minimized and  
any differential-mode noise is cancelled within the device. The low inductance of the capacitors extends their high  
frequency attenuation considerably over discrete MLCs.  
B
Power  
X2Y® Circuit 2: Power Bypass / Decoupling  
A
Circuit 2 connects the A & B capacitors in parallel doubling the total capacitance while reducing the inductance.  
X2Y capacitors exhibit up to 1/10th the device inductance and 1/5th the mounted inductance of similar sized MLC  
capcitors enabling high-performance bypass networks with far fewer components and vias. Low ESL delivers  
improved High Frequency performance into the GHz range.  
G1  
G2  
B
Ground  
GSM RFI Attenuation in Audio & Analog  
GSM handsets transmit in the 850 and 1850 MHz bands using a TDMA pulse  
rate of 217Hz. These signals cause the GSM buzz heard in a wide range of  
audio products from headphones to concert hall PA systems or “silent” signal  
errors created in medical, industrial process control, and security applications.  
Testing was conducted where an 840MHz GSM handset signal was delivered  
to the inputs of three different amplifier test circuit configurations shown below  
whose outputs were measured on a HF spectrum analyzer.  
1) No input filter, 2 discrete MLC 100nF power bypass caps.  
2) 2 discrete MLC 1nF input filter, 2 discrete MLC 100nF power bypass caps.  
3) A single X2Y 1nF input filter, a single X2Y 100nF power bypass cap.  
X2Y configuration provided a nearly flat response above the ambient and up to  
10 dB imrpoved rejection than the conventional MLCC configuration.  
Amplifier Input Filter Example  
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In this example, a single Johanson X2Y component was used to filter noise at the input of a DC  
instrumentation amplifier. This reduced component count by 3-to-1 and costs by over 70ꢀ vs.  
conventional filter components that included 1ꢀ film Y-capacitors.  
Parameter  
X2Y®  
10nF  
Discrete  
10nF, 2 @ 220 pF  
Comments  
DC offset shift  
< 0.1 µV  
91 dB  
< 0.1 µV  
92 dB  
Referred to input  
Common mode rejection  
Source: Analog Devices, “A Designer’s Guide to Instrumentation Amplifiers (2nd Edition)” by Charles Kitchin and Lew Counts  
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www.johansondielectrics.com  
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