Differential amplifier having unilateral field effect transistors and process of fabricating

US5811341A · kind A · utility

Assignee

• Motorola, Inc. · US

Inventors

• Robert B. Davies · Tempe, US
• Andreas Wild · Weimar, DE

Key dates

• Filing date: Dec 9, 1996
• Grant date: Sep 22, 1998
• Expiry date: Dec 9, 2016

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D64/671

Abstract

A differential amplifier (10) includes three unilateral field effect transistors (12, 14, 16) formed in a common well (40) of a semiconductor material. Each of the three unilateral field effect transistors (12, 14, 16) has an asymmetric channel doping profile. The performance of the differential amplifier (10) is significantly improved by properly orienting the three unilateral field effect transistors (12, 14, 16).