Verstärkerschaltungen mit Umgebungslichtunterdrückung

Details

Veröffentlichungs-Nr.

EP4804404

Anmeldetag

2. März 2026

Veröffentlichung

9. September 2026

Rechtsraum

EP

IPC

H03F3/08, H03F3/45, H03G3/30

Abstract

Amplifier circuit that can provide improvements in terms of performance and power efficiency. An example integrated circuit includes a first pin connectable to a photodiode to receive an input current from the photodiode; an amplifier connected to the first pin; a second pin connected to the amplifier to provide an output voltage indicative of the input current from the photodiode; a current source circuit connected between the first pin and the second pin; an analog-to-digital converter (ADC) circuit connected between the second pin and the current source circuit; and a controller configured to, during a first time period, measure a first current associated with the photodiode using the ADC circuit and, during a second time period, cause the current source circuit to provide a second current to the amplifier to cancel the first current.

Anmelder

Firma

Avago Technologies International Sales Pte. Limited

Land

🇸🇬 Singapur

Fachgebiete