Line driver

US7030660B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Armin Hanneberg · Haar, DE
• Peter Laaser · Munich, DE

Key dates

• Filing date: Jun 11, 2002
• Grant date: Apr 18, 2006
• Expiry date: Jun 11, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L25/0272
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A line driver which is especially suitable for wirebound data transmission at high bit rates, comprising several parallel-connected driver stages (3) respectively comprising a first pair of transistors consisting of two transistors (4, 5) which are controlled in a differential manner according to digital data to be transmitted, and a second pair of transistors (4, 5). The transistors belonging to the second pair of transistors (6, 7) are series-connected to a corresponding transistor (4, 5) of the first pair of transistors. The individual driver stages (3) are connected by the transistors (6, 7) of the second pair of transistors in a parallel manner to both the terminals of the line driver. Each driver stage (3) is associated with a control circuit (2) with transfer gates (14, 15), producing the differential control signals (VGA, VGB) for the two transistors (4, 5) of the corresponding first pair of transistors.