Blog Posts - High-frequency Performance



Free Webinars for Hardware and PCB Engineers

Free Webinars for Hardware and PCB EngineersGoto WebinarEnhancing Multi-Gbps Simulations With The New HyperLynx 3D Full-wave SolverGoto WebinarSystem Level Power Considerations for PCB DesignGoto WebinarAddressing Complex Technology Challenges with t...
by PCB Layout Authority on Jul 25, 2011

Free Webinars for Hardware and PCB Engineers

Free Webinars for Hardware and PCB EngineersGoto WebinarEnhancing Multi-Gbps Simulations With The New HyperLynx 3D Full-wave SolverGoto WebinarSystem Level Power Considerations for PCB DesignGoto WebinarAddressing Complex Technology Challenges with t...
by PCB Layout Authority on Jul 25, 2011

Gigabit Ethernet Controller Design Guidelines --> Ethernet Magnetic Selection Considerations

The Ethernet magnetic is dependent on the external PHY. Please refer to the external PHY’s datasheet and reference schematic for the detailed requirement of the Ethernet magnetic.The following is the reference Ethernet magnetic circuit (single RJ-4...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design Guidelines --> Power and Ground Planes Considerations

The RJ-45 chassis ground and the digital ground should be isolated through a 1M Ohm resistor and a 0.1uF decoupling capacitor. And the gap between the chassis ground and digital ground must be wider than 60 mils.All the digital and analog power plane...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design Consideration --> Ethernet Magnetic Layout Considerations

The Ethernet magnetic layout considerations are dependent on the external PHY. Please refer to the preferred external PHY Ethernet magnetic layout guide for the detailed requirements.The following are some general Gigabit Ethernet layout consideratio...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design --> General Design Considerations for Ethernet Controllers

Follow good engineering practices with respect to unused inputs by terminating them with pull-up or pull-down resistors, unless the datasheet, design guide or reference schematic indicates otherwise. Do not attach pull-up or pull-down resistors to a...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design Guidelines --> Ethernet Magnetic Selection Considerations

The Ethernet magnetic is dependent on the external PHY. Please refer to the external PHY’s datasheet and reference schematic for the detailed requirement of the Ethernet magnetic.The following is the reference Ethernet magnetic circuit (single RJ-4...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design Guidelines --> Power and Ground Planes Considerations

The RJ-45 chassis ground and the digital ground should be isolated through a 1M Ohm resistor and a 0.1uF decoupling capacitor. And the gap between the chassis ground and digital ground must be wider than 60 mils.All the digital and analog power plane...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design Consideration --> Ethernet Magnetic Layout Considerations

The Ethernet magnetic layout considerations are dependent on the external PHY. Please refer to the preferred external PHY Ethernet magnetic layout guide for the detailed requirements.The following are some general Gigabit Ethernet layout consideratio...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design --> General Design Considerations for Ethernet Controllers

Follow good engineering practices with respect to unused inputs by terminating them with pull-up or pull-down resistors, unless the datasheet, design guide or reference schematic indicates otherwise. Do not attach pull-up or pull-down resistors to a...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design Consideration --> Ethernet Magnetic Layout Considerations

The Ethernet magnetic layout considerations are dependent on the external PHY. Please refer to the preferred external PHY Ethernet magnetic layout guide for the detailed requirements.The following are some general Gigabit Ethernet layout consideratio...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design --> General Design Considerations for Ethernet Controllers

Follow good engineering practices with respect to unused inputs by terminating them with pull-up or pull-down resistors, unless the datasheet, design guide or reference schematic indicates otherwise. Do not attach pull-up or pull-down resistors to a...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design Guidelines --> Ethernet Magnetic Selection Considerations

The Ethernet magnetic is dependent on the external PHY. Please refer to the external PHY’s datasheet and reference schematic for the detailed requirement of the Ethernet magnetic.The following is the reference Ethernet magnetic circuit (single RJ-4...
by PCB Layout Authority on Jul 11, 2009

Gigabit Ethernet Controller Design Guidelines --> Power and Ground Planes Considerations

The RJ-45 chassis ground and the digital ground should be isolated through a 1M Ohm resistor and a 0.1uF decoupling capacitor. And the gap between the chassis ground and digital ground must be wider than 60 mils.All the digital and analog power plane...
by PCB Layout Authority on Jul 11, 2009

Resistor High-Frequency Performance

High-frequency performance of resistors is approximated by the schematic shown below:Resistors are typically one of three types: wire-wound, carbon composition, and film. It does not take a lot of imagination to understand how wire-wound resistors ca...
by PCB Layout Authority on Sep 16, 2008

Capacitor High-Frequency Performance

High-frequency performance of capacitors is approximated by the schematic shown belowTherefore, a 10-μF electrolytic capacitor has a reactance of 1.6 Ω at 10 kHz, and 160-μΩat 100 MHz. Right?In reality, one will never see the 160 μΩ with the el...
by PCB Layout Authority on Sep 16, 2008

Inductor High-Frequency Performance

High frequency performance of inductors is approximated by the schematic shown belowTherefore, a 10-mH inductor has a reactance of 628 Ω at 10 kHz, which increases to6.28 MΩ at 100 MHz. Right?In reality, one will never see the 6.28 MΩ with this in...
by PCB Layout Authority on Sep 16, 2008


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