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IC package ground plane (Read 1415 times)
engrvip
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IC package ground plane
Nov 23rd, 2016, 8:53am  
Inside an IC package, what is the purpose of ground plane. Is it connected to the backplane of substrate for biasing it.

Is it useful only in high frequency RF circuits or required for low frequency analog and digital circuits also.
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loose-electron
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Re: IC package ground plane
Reply #1 - Nov 23rd, 2016, 5:44pm  
Two things:

1. Thermal conduction path. (grounded metal slug in some IC packages)

2. Localized common node tie point for ground, to provide "up close" (minimum L in interconnect) to bring grounds at chip bonding pads together.
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