Differential to single-ended logic converter

US6924668B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• David Müller · Mannheim, DE
• Volkmar Rebmann · Munich, DE

Key dates

• Filing date: Sep 25, 2003
• Grant date: Aug 2, 2005
• Expiry date: Sep 25, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03K19/018528
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

The present invention is a converter stage for converting a differential logic input signal and a corresponding common mode differential logic signal each having a first single-ended logic signal and a complementary second single-ended logic signal into a single-ended logic output signal. The converter stage comprises a first and a second differential stage each having a first and a second MOS transistor and a first and second current source for the differential stages. According to the invention the current sources are controlled by the voltage level which is centered between the mid-potentials of the common mode level differential logic signal and the mid-potential of the differential logic input signal.