Semiconductor device using current mirror circuit
AssigneesElpida Memory, Inc., Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
InventorsYoji Idei, Yusuke Shimizu
Life of this patent
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Abstract
The semiconductor device includes a first current mirror circuit combining analog power sources and digital power sources to receive small amplitude signals and constant-voltage input signals, a second current mirror circuit for receiving a signal output from the first current mirror circuit and for level-converting the signal from analog power source to digital power source, a first node provided in the first current mirror circuit, a second node provided in the second current mirror circuit, and an inverter circuit for receiving a signal output on the basis of the voltage levels of the first node and the second node and for outputting a CMOS level signal.
Claims7
A semiconductor device, comprising:
- a first current mirror circuit combining an analog power source and a digital power source to receive a small amplitude signal and a constant-voltage input signal;
- a second current mirror circuit for receiving a signal output from the first current mirror circuit and for level-converting the signal from analog power source to digital power source;
- a first node provided in the first current mirror circuit;
- a second node provided in the second current mirror circuit;
- and
- an inverter circuit for receiving a signal output on the basis of voltage levels of the first node and the second node and for outputting a CMOS level signal,
- wherein a CMOS level signal is generated from the small amplitude signal.
Dependencies are inferred from the claim text.