SENSE AMPLIFIER

Abstract: a sense amplifier is provided. a first terminal of a first invertor is connected to a power node and a second terminal of the first invertor is connected to a cell current source. a first terminal of a second invertor is connected to the power node and a second terminal of the second invertor is connected to a reference current source. the first invertor is cross coupled with the second invertor at a first node and a second node. a pre-charge circuit is connected to the first node and the second node. a first pull up transistor and a second pull up transistor are connected between a supply voltage node and the power node. a signal level detector circuit is connected to the second pull up transistor. the signal level detector circuit switches on the second pull up transistor when a remaining voltage on one of the first node and the second node is below a reference voltage.

Inventor(s): Chia-Fu Lee, Hon-Jarn Lin, Yu-Der Chih

CPC Classification: G11C7/062 ({Differential amplifiers of non-latching type, e.g. comparators, long-tailed pairs})

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