Chip mit Stromspiegelartiger Spannungsquelle

Details

Veröffentlichungs-Nr.

EP4564123

Aktenzeichen

EP24214521

Anmeldetag

21. November 2024

Veröffentlichung

4. Juni 2025

Rechtsraum

EP

IPC

G05F1/56G05F3/26

Abstract

A chip with a current-mirror-like voltage source is shown. The current-mirror-like voltage source has a first n-channel Metal-Oxide-Semiconductor Field-Effect Transistor (NMOS), a second NMOS, and an operational amplifier. The first and second NMOSs have drains coupled to a first voltage source Vdd1. The operational amplifier has an output terminal coupled to the gates of the first NMOS and the second NMOS, a negative input terminal coupled to the source of the first NMOS to form a negative feedback loop, and a positive input terminal coupled to the source of the second NMOS to form a positive feedback loop. The operational amplifier is powered by a second voltage source that is greater than the first voltage source, to operate the first and second NMOSs in their saturation region, and thereby the current-mirror-like voltage source outputs a load current mirrored from a first current.

Anmelder

Firma

MediaTek Inc.

Land

🇹🇼 Taiwan

Fachgebiete