Patent ID: 7274219
Filing Date: 2007-09-25
Classification: G11C

Abstract:
1. An offset current independent sense circuit comprising: a balancing circuit, having a first and second input and a first and second output, a sensed object having a first end being connected to the first input of said balancing circuit and a second end being connected to the second input of said balancing circuit, said sensing object producing an offset current at the first output of the balancing circuit when a first voltage is supplied to the first and second inputs of the balancing circuit; a capacitor, connected to the first output, for storing the offset current; and a first transistor, connected to the second output, whereby the first transistor regenerates the offset current at the second output responsive to a signal supplied by the capacitor to the first transistor when the first voltage and a second voltage are supplied to the first and second inputs, respectively.