用于收发器接口过压钳位的装置和方法

Apparatus and methods for transceiver interface overvoltage clamping

Abstract

Apparatus and methods for transceiver interface overvoltage clamping are provided. In certain configurations, an interface device includes a first p-type well region and a second p-type well region in an n-type isolation structure. Additionally, the clamp device includes a first p-type active region and a first n-type active region in the first p-type well region and electrically connected to a first terminal of the clamp device. Furthermore, the clamp device includes a second p-type active region and a second n-type active region in the second p-type well region and electrically connected to a second terminal of the clamp device. The n-type isolation structure is in a p-type region of a semiconductor substrate, and electrically isolates the first and second p-type well regions from the p-type substrate region. The clamp device further includes a blocking voltage tuning structure positioned between the first and second n-type active regions.
提供了用于收发器接口过压钳位的装置和方法。在某些配置中,接口器件包括第一p型阱区和n型隔离结构中的第二p型阱区。另外,钳位器件包括第一p型有源区和第一p型阱区中且电连接到钳位器件的第一端子的第一n型有源区。此外,钳位器件包括第二p型有源区和第二p型阱区中且电连接到钳位器件的第二端子的第二n型有源区。n型隔离结构处于半导体基底的p型区中,并且使第一和第二p型阱区与p型基底区电隔离。钳位器件还包括位于第一和第二n型有源区之间的阻塞电压调谐结构。

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