Sense amplifier with configurable voltage swing control

G - Physics – 01 – R

Patent

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Details

G01R 19/00 (2006.01) G11C 7/00 (2006.01) G11C 7/06 (2006.01)

Patent

CA 2499408

A sense amplifier (15) that is configurable to operate in two modes in order to control a voltage swing on the sense amplifier output (40). The sense amplifier has two feedback paths (45 to 35) including a first feedback path (P101, N101, N133) having a transistor (N133) with a fast response time in order to allow the circuit to operate as fast as possible, and a second feedback path (P121, P102, N102, N121, N132, N131) for providing voltage swing control. In the first operating mode, the ~turbo~ mode, both feedback paths are in operation (BOOST = HIGH) to provide a higher margin of swing control, thus higher sensing speed. In the second operating mode, the ~non-turbo~ mode, only the first feedback path is in operation (BOOST = LOW) which allows for greater stability and a reduction in power consumption.

L'invention concerne un amplificateur de détection (15) qui peut être configuré pour fonctionner selon deux modes pour commander une excursion de tension au niveau de la sortie (40) de l'amplificateur. Ledit amplificateur de détection comporte deux chemins de réaction (45 à 35) comprenant un premier chemin de réaction (P101, N101, N133) comportant un transistor (N133) présentant un temps de réponse réduit pour permettre au circuit de fonctionner avec la plus grande rapidité possible, ainsi qu'un second chemin de réaction (P121, P102, N102, N121, N132, N131) pour la commande de l'excursion de tension. Dans le premier mode de fonctionnement, ou mode turbo , les deux chemins de réaction fonctionnent (AMPLIFICATION = ELEVEE) pour fournir une marge supérieure de commande d'excursion, et donc une vitesse de détection supérieure. Dans le second mode de fonctionnement, ou mode non turbo , seul le premier chemin de réaction fonctionne (AMPLIFICATION = FAIBLE), ce qui permet d'accroître la stabilité et de réduire la consommation d'énergie.

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