CMOS process

US6492671B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventor

• Anders Soderbarg · Uppsala, SE

Key dates

• Filing date: Mar 28, 2001
• Grant date: Dec 10, 2002
• Expiry date: Mar 28, 2021

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D84/856

Abstract

A high-voltage MOS transistor is produced in a low-voltage CMOS process without adding extra process steps for producing the high-voltage MOS For. The high-voltage MOS transistor is to be used as an analog line driver and is produced on tho same silicon area as low voltage AD/DA-converters. Hereby, the low-voltage and the high-voltage design block are directly compatible with each other, e.g. have the same threshold voltages, which simplifies the design of the total solution.