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US 5,854,567 AGranted
Low loss integrated circuit with reduced clock swing
AssigneeSiemens Aktiengesellschaft
InventorsStefan Meier, Erik De Man
Life of this patent
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Abstract
The integrated circuit with a clock system, particularly a CMOS circuit with extensive pipelining, whereby an optimally low overall dissipated power is effected in that a clock driver circuit is provided with a specifically wired driver output stage that generates a clock supply voltage that corresponds to about half the value of a general supply voltage. A great reduction of the dissipated power can be achieved given relative slight sacrifices in the performance capability.
Claims2
An integrated circuit, comprising:
- a clock driver circuit having first and second terminals and a plurality of stages,
- said first terminal of at least a last stage of the clock driver circuit being supplied with a clock supply voltage that is lower in terms of amount than a general supply voltage of the integrated circuit,
- said second terminal of the at least one last stage of the clock driver circuit being directly connected to reference potential, a load current flowing between said first and second terminals,
- an inverter unit being provided that is supplied with a difference voltage between an output of the last stage and the general supply voltage, that is driven with a clock input signal inverse to the clock input signal of the last stage, and said inverter having an output supplying the clock supply voltage for the last driver stage, the clock supply voltage simultaneously representing a clock output signal inverse to a clock output signal of the last stage.
1 more element
Dependencies are inferred from the claim text.