Voltage generation circuit and input buffer including the voltage generation circuit
AssigneeSK hynix Inc.
InventorsJin Ha Hwang, Soon Sung An
Life of this patent
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Abstract
A voltage generation circuit may include: a first transistor coupled to an internal supply voltage terminal, and configured as a diode-connected transistor; a second transistor coupled to the first transistor and configured as a diode-connected transistor; and a third transistor coupled between the second transistor and a ground voltage terminal, and configured to operate according to a first reference voltage generated based on an external supply voltage. The voltage generation circuit may limit a variation in level of a second reference voltage which is generated through a drain terminal of the second transistor as a threshold voltage of the second transistor rises according to a rise in level of the internal supply voltage.
Claims9
An input buffer comprising:
- an amplifier circuit configured to receive an internal supply voltage, and generate an output signal by amplifying an input signal according to a compensation bias voltage and a first reference voltage generated based on an external supply voltage;
- and
- a compensation circuit configured to generate the compensation bias voltage according to a pre-compensation signal generated through a replica circuit configured by replicating the amplifier circuit and a second reference voltage generated by the compensation circuit,
- wherein the compensation circuit generates the second reference voltage having a level that is restricted from varying according to a rise in level of the internal supply voltage.
Dependencies are inferred from the claim text.