US Patent No: 5,771,198
Number of patents in Portfolio can not be more than 2000
Source voltage generating circuit in semiconductor memory
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Jun 23, 1998
Issued date -
Apr 22, 1996
filing date -
08/636,115
serial no -
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Abstract
An internal power supply circuit for a semiconductor memory device comprising a differential amplifier having a reference voltage as an input and utilizing an external power supply voltage. An amplifier output provides an internal power supply voltage. The amplifier is connected to a current source which comprises a plurality of transistors connected in series between one side of said amplifier and ground. A current control transistor having a channel larger than the channels of the transistors connected in series is switchable between a first state in which the current control transistor is substantially on and a second state in which said current control transistor is substantially off.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,683,382 Power-saving voltage supply | 60 | 1984 | |
| 5,420,528 Semiconductor integrated circuit having a function of reducing a consumed current | 9 | 1994 | |
| 5,587,958 Semiconductor memory device including a boost potential generation circuit | 7 | 1994 | |
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| 5,295,112 Semiconductor memory | 16 | 1992 | |
| 5,568,440 Semiconductor memory device having self-refreshing function | 24 | 1995 | |
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| 5,539,692 Semiconductor memory and method of setting type | 20 | 1994 | |
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| 5,594,699 DRAM with reduced electric power consumption | 18 | 1994 | |
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| 5,550,781 Semiconductor apparatus with two activating modes of different number of selected word lines at refreshing | 35 | 1995 | |
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| 5,291,452 Sensing amplifier circuit for data readout from a semiconductor memory device | 5 | 1992 | |