Patent ID: 7990792
Filing Date: 2011-08-02
Classification: G11C

Abstract:
1. A sense amplifier circuit, comprising: first and second first-type transistors each having a channel of a first conductivity type and having a source coupled to a first voltage, a gate to which a first enable signal is applied, and a drain; third and fourth first-type transistors each having a source, a drain, and a gate, the source of the third first-type transistor coupled to the drain of the first first-type transistor, the source of the fourth first-type transistor coupled to the drain of the second first-type transistor, the gate of the third first-type transistor coupled to the drain of the fourth first-type transistor, the gate of the fourth first-type transistor coupled to the drain of the third first-type transistor; first and second second-type transistors each having a channel of a second conductivity type and having a drain, a gate , and a source coupled to a second voltage different from the first voltage, the drain of the first second-type transistor coupled to the drain of the third first-type transistor, the drain of the second second-type transistor coupled to the drain of the fourth first-type transistor; first and second complementary local data lines, the first local data line coupled to the gate of the first second-type transistor, the second local data line coupled to the gate of the second second-type transistor; and first and second complementary global data lines, the first global data line coupled to a node between the drain of the third first-type transistor and the drain of the first second-type transistor, the second global data line coupled to a node between the drain of the fourth first-type transistor and the drain of the second second-type transistor.