System-on-chip with shield rings for shielding functional...

Details System-on-chip with shield rings for shielding functional... System-on-chip with shield rings for shielding functional...

2007-01-30

2007-01-30

Malsawma, Lex H. (Department: 2823)

Active solid-state devices (e.g., transistors, solid-state diode

Integrated circuit structure with electrically isolated...

Reexamination Certificate

active

10906583

ABSTRACT:
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.

REFERENCES:
patent: 6998712 (2006-02-01), Okada et al.
patent: 2005/0065747 (2005-03-01), Premy et al.
patent: 2005/0282381 (2005-12-01), Cohen et al.

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