Patent ID: 7821859
Filing Date: 2010-10-26
Classification: G11C

Abstract:
1. A current sense amplifier circuit, comprising: a reference current leg that includes a reference limit section coupled between a first data node and a bias current node; a data current leg that includes a data limit section coupled between a second data node and a sense current node; and an equalization circuit that includes a first equalization path coupled between the first data node the second data node, and a second equalization path coupled between the bias current node and the sense current node, the first and second equalization paths providing a high or low impedance in response to an equalization signal, and a first limit section coupled between a first power supply node and the bias current node, and a second limit section coupled between the first power supply node and the data current node; wherein a current flowing through the reference limit section, data limit section, first limit section and second limit section is limited according to a limit voltage.