Patent ID: 7336552

Claim:
A sense amplifier connecting/disconnecting circuit arrangement for a semiconductor memory device, comprising: switching devices for connecting or disconnecting a sense amplifier device allocated to several different cell field regions to or from a bit line of a first cell field region, and for connecting or disconnecting the sense amplifier device to or from a bit line of a second cell field region, as a function of a state of control signals applied at respective first and second control lines; driver devices for driving the control signals; and a first transistor for changing the state of the control signal applied at the first control line, and a second transistor for changing the state of the control signal applied at the second control line, a first connection of the first transistor being directly connected with the first control line, and a second connection of the first transistor being directly connected with a ground potential, a first connection of the second transistor being directly connected with the second control line, and a second connection of the second transistor being connected with the ground potential, wherein the first transistor is controlled by a first additional control signal, and the second transistor is controlled by a second additional control signal, and the first additional control signal additionally controls a switching device of an equalizer circuit of the second cell field region, and the second additional control signal additionally controls a switching device of an equalizer circuit of the first cell field region.