®
X2Y Fil t e r & De c o u p l i n g
ca pa c i t o r s
X2Y® Circuit 2: Decoupling
When used in circuit 2 configuration, A & B capacitors are placed in parallel effectively doubling the apparent capacitance while maintaining an ultra-low
inductance. The low inductance advantages of the X2Y® Capacitor Circuit enables high-performance bypass networks at reduced system cost.
Power
A
G1
G2
• Low ESL (device only and mounted)
• Broadband performance
• Lower via count, improves routing
• Reduces component count
• Lowers placement cost
B
• Effective on PCB or package
Ground
Component Performance
®
The X2Y
has short, multiple and opposing current paths
resulting in lower device inductance.
Mounted Performance
Mutual coupling from
opposing polarity vias
lowers inductance when
mounted on a PCB.
SYSTEM PERFORMANCE
1:5 MLCC Replacement Example
®
104 MLCs
0402 47nF
20 X2Y
0603 100nF
Transfer Impedance
seen by FPGA
®
X2Y’s proven technology enables end-users to use one X2Y
capacitor to replace five conventional MLCCs in a typical high
performance IC bypass design. Vias are nearly cut in half, board
space is reduced and savings are in dollars per PCB.
3
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JOHANSON [ JOHANSON TECHNOLOGY INC. ]
