Patent · US Expired

Integrated circuit for determining a voltage

US7365554B2 · kind B2 · utility

2Cited by

11References

14Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Joerg Vollrath · Richmond, US
Marcin Gnat · Birkenfeld, DE
Aurel von Campenhausen · Munich, DE
Ralf Schneider · Birkenfeld, DE

Key dates

Filing date	Mar 29, 2005
Grant date	Apr 29, 2008
Priority date	—
Expiry date	May 31, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG11C2029/5004
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An integrated circuit includes a current generator circuit with a first input terminal for applying a reference voltage and a second input terminal for applying an input voltage, which is generated internally from an externally applied supply voltage by a voltage generator circuit. The current generator circuit is connected to an output terminal via an interconnect. A first current flows on the interconnect in a test operating state of the integrated circuit. The current generator circuit generates a first partial current in a first test cycle of a test operating state and a second partial current in a subsequent second test cycle. The partial currents are each superposed on the first current on the interconnect. Consequently, three currents occur at the output terminal during the test operating state. The internally generated input voltage of the current generator circuit is determined from the three currents and the reference voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.