Series resistive network

US4713680A · kind A · utility

Assignee

• Motorola, Inc. · US

Inventors

• William F. Davis · Tempe, US
• Robert L. Vyne · Gilbert, US

Key dates

• Filing date: Jun 30, 1986
• Grant date: Dec 15, 1987
• Expiry date: Jun 30, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S438/927

Abstract

First and second resistors of a resistive network formed in a semiconductive substrate may be individually trimmed. The first and second resistive regions coupled at one end thereof have their other ends provided with metallic contacts. The resistive regions are disposed on the substrate such that current flowing from the first metallic contact to the second metallic contact through the first and second resistive regions causes the resistance of the first resistive region to be reduced. In contrast, current flowing from the second metallic contact to the first metallic contact through the first and second resistive regions causes the resistance of the second resistive region to be reduced.