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US 8,274,856 B2Granted
Internal voltage generator and semiconductor memory device including the same
AssigneeHynix Semiconductor Inc.
InventorSang-Jin Byeon
Life of this patent
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Abstract
A semiconductor device including an internal voltage generator circuit that provides an internal voltage having a different level depending on the operation speed is provided. The semiconductor device includes an internal voltage generator circuit configured to receive operation speed information to generate an internal voltage having a different level depending on the operation speed; and an internal circuit operated using the internal voltage.
Claims5
An internal voltage generator circuit, comprising:
- a frequency detector configured to detect a frequency of an external clock by comparing the external clock with an internal reference clock to output operation speed information;
- a differential amplifier configured to output a driver control signal in response to a feed-back voltage of an internal voltage and a reference voltage;
- a driver configured to drive the internal voltage in response to the driver control signal;
- and
- a voltage divider configured to divide the internal voltage to generate the feed-back voltage of the internal voltage, wherein a division ratio of the internal voltage depends on the operation speed information.
2 more elements
Dependencies are inferred from the claim text.