Integrated circuit with a measuring circuit and method of configuring an integrated circuit with a measuring circuit

US7816907B2 · kind B2 · utility

Assignee

• Lantiq Deutschland GmbH · DE

Inventors

• Christoph Schwarzer · Munich, DE
• Holger Wenske · Freising, DE
• Mario Traber · Deisenhofen, DE
• Thomas Eichler · Munich, DE
• Marc Hesener · Birkenfeld, DE
• Armin Hanneberg · Haar, DE
• David Herbison · Arvada, US

Key dates

• Filing date: Apr 23, 2008
• Grant date: Oct 19, 2010
• Expiry date: Oct 18, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05B45/24
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An integrated circuit includes an output terminal to be coupled to a light-emitting diode, an output circuit coupled to the output terminal, the output circuit being configured to supply an operating signal to the light-emitting diode, a measuring circuit coupled to the output terminal and a control circuit coupled to the measuring circuit. The measuring circuit is configured to sense on the output terminal a signal value outside an operating regime of the light-emitting diode, the signal value being a voltage below a forward voltage of the light-emitting diode or a current below a threshold current of the light-emitting diode. The control circuit is configured to configure at least one function of the integrated circuit when the signal value as sensed by the measuring circuit corresponds to a voltage below the forward voltage of the light-emitting diode or a current below the threshold current of the light-emitting diode.