RF-coupled digital isolator

Details RF-coupled digital isolator RF-coupled digital isolator

2008-06-27

2011-12-20

Pert, Evan (Department: 2826)

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

Lead frame

C257S725000, C257SE23031, C257SE23052, C361S814000, C361S820000

Reexamination Certificate

active

08080865

ABSTRACT:
An RF-coupled digital isolator includes a first leadframe portion and a second leadframe portion, electrically isolated from one another. The first leadframe portion includes a first main body and a first finger. The second leadframe portion includes a second main body and a second finger. The first main body is connected to a first ground, and the second main body is connected to a second ground that is electrically isolated from the first ground. The first finger and the second finger are electrically isolated from one another, e.g., by a plastic molding compound that forms a package for the digital isolator. The first finger acts as a primary of a transformer, and the second finger acts as a secondary of a transformer, when an RF signal drives to the first finger. The first finger and the second finger can be substantially parallel or anti-parallel to one another.

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