Bipolar logical circuit arrangement for signal regeneration

US4634994A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Wilhelm Wilhelm · Munich, DE
• Peter Sehrig · Pocking, DE

Key dates

• Filing date: May 13, 1985
• Grant date: Jan 6, 1987
• Expiry date: May 13, 2005

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03F2203/45702
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A bipolar semiconductor circuit arrangement with transistors of one conduction type having a differential amplifier stage formed by a first and a second transistor with collectors coupled back crosswise to bases thereof and with emitters thereof connected to terminal of a current source having another terminal which is at supply potential, the first and second transistors having a collector circuit wherein a respective resistance is connected includes a pair of control transistors having collector-emitter paths connected between the respective resistances and the collectors of the first and second transistors of the differential amplifier stage, the control transistors having respective base terminals serving as a source of complimentary input signals, and having respective collectors connected to a source of complementary output signals.