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System-on-chip with shield rings for shielding functional blocks therein from electromagnetic interference
System-on-chip with shield rings for shielding functional blocks therein from electromagnetic interference
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机译:带有屏蔽环的片上系统,用于屏蔽其中的功能块免受电磁干扰
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摘要
A system-on-chip (SoC) that is immune to electromagnetic interference has block shield rings fabricated therein. The SoC includes a microprocessor core; an on-chip bus interface; an embedded memory block; and an analog/mixed-signal integrated circuit shielded by an EMI shield ring encircling the analog/mixed-signal integrated circuit for protecting the analog/mixed-signal integrated circuit from electromagnetic interference. The EMI shield ring is grounded and includes a metal rampart consisting of multi-layer metals and vias. A pickup diffusion is connected to the metal rampart. In one embodiment, the memory block is also shielded.
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