发明名称 |
Reference voltage generator permitting stable operation |
摘要 |
A reference voltage generation circuit is provided which includes a p-channel type MOSFET used as an input transistor to allow a sufficient current to flow through a differential amplifier even if the threshold voltages of MOSFETs used in the differential amplifier significantly increase. A push-pull conversion circuit is coupled to the differential amplifier and has a double end configuration to provide a sufficiently high level to drive a p-channel output buffer. This arrangement allows a stable operation at a sufficiently low power supply voltage even if the threshold voltages of the MOSFETs forming the differential amplifier are high. It also allows quick activation when the power is turned on and provides high stability.
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申请公布号 |
US6535435(B2) |
申请公布日期 |
2003.03.18 |
申请号 |
US20010012522 |
申请日期 |
2001.12.12 |
申请人 |
HITACHI, LTD.;HITACHI ULSI SYSTEMS CO., LTD. |
发明人 |
TANAKA HITOSHI;AOKI MASAKAZU;KIMURA SHINICHIRO;NODA HIROMASA;SEKIGUCHI TOMONORI |
分类号 |
G11C5/14;G11C11/4074;H01L27/02;H01L27/108;(IPC1-7):G11C7/00 |
主分类号 |
G11C5/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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