Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1995-11-16
1998-04-07
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327530, 327540, G05F 110
Patent
active
057368945
ABSTRACT:
In a level generating circuit 1 included in an internal power supply circuit of a DRAM, MOS transistors 14 and 16 for inactivating a V.sub.1 generating circuit 3, and MOS transistors 23 and 25 for inactivating a V.sub.2 generating circuit 5 are provided. When V.sub.1 is to be adjusted, V.sub.2 generating circuit 5 is inactivated, and when V.sub.2 is to be adjusted, V.sub.1 generating circuit 3 is inactivated. Therefore, failure of adjustment of internal power supply potential intVcc caused by confusion of V.sub.1 and V.sub.2 can be prevented.
REFERENCES:
patent: 5249155 (1993-09-01), Arimoto et al.
patent: 5305275 (1994-04-01), Yamashita et al.
patent: 5426616 (1995-06-01), Kajigaya et al.
patent: 5459426 (1995-10-01), Hori
patent: 5554953 (1996-09-01), Shibayama et al.
Callahan Timothy P.
Kim Jung Ho
Mitsubishi Denki & Kabushiki Kaisha
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