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US 2014/0152380 A1Published application
Semiconductor device that can cancel noise in bias line to which bias current flows
AssigneeElpida Memory, Inc.
InventorsHideyuki YOKOU, Isao NAKAMURA, Manabu ISHIMATSU
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Abstract
Disclosed herein is a device that includes a bias line to which a bias current flows, a switch circuit controlling an amount of the bias current based on a control signal, a control line to which the control signal is supplied, and a cancellation circuit substantially cancelling a potential fluctuation of the bias line caused by changing the control signal, the potential fluctuation propagating via a parasitic capacitance between the control line and the bias line.
Claims10
A semiconductor device comprising:
- a bias line to which a bias current flows;
- a switch circuit controlling an amount of the bias current based on a control signal;
- a control line to which the control signal is supplied;
- and
- a cancellation circuit substantially cancelling a potential fluctuation of the bias line caused by changing the control signal, the potential fluctuation propagating via a parasitic capacitance between the control line and the bias line.
2 more elements
A semiconductor device comprising:
- a bias line to which a bias current flows;
- a switch circuit including a plurality of MOS transistors each having a gate electrode and a drain, each of the gate electrodes having a different width from each other, and the drains being commonly coupled to the bias line;
- a control circuit supplying each of control signals to the gate electrode of an associated one of the MOS transistors;
- and
- a plurality of balance capacities each having a different capacitance from each other, and each having one end being commonly coupled to the bias line and the other end to which an inversion signal of an associated one of the control signals is supplied.
2 more elements
Dependencies are inferred from the claim text.