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US 9,438,215 B2Granted
Buffer circuit for buffering and settling input voltage to target voltage level and operation method thereof
AssigneeSK hynix Inc.
InventorMyung-Hwan Lee
Life of this patent
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Abstract
A buffer circuit includes an amplifying unit suitable for comparing an input voltage of an input terminal with an output voltage of an output terminal, a current sinking unit suitable for controlling a sinking current of the amplifying unit when the input voltage is varied, and a current compensation unit suitable for uniformly maintaining a sinking current amount of the current sinking unit.
Claims17
A buffer circuit, comprising:
- an amplifying unit suitable for comparing an input voltage of an input terminal with an output voltage of an output terminal;
- a current sinking unit suitable for controlling a sinking current of the amplifying unit when the input voltage is varied;
- a current compensation unit suitable for uniformly maintaining a sinking current amount of the current sinking unit;
- and
- a control signal generation unit suitable for receiving the input voltage to generate a control signal, which is activated when the input voltage is varied,
- wherein the current sinking unit is controlled by the control signal.
3 more elements
A buffer circuit, comprising:
- an amplifying unit suitable for comparing an input voltage of an input terminal with an output voltage of an output terminal;
- a current sinking unit coupled to the input terminal of the amplifying unit and suitable for controlling a sinking current of the amplifying unit when a power-up operation is performed;
- a current compensation unit coupled to the output terminal of the amplifying unit and suitable for uniformly maintaining a sinking current amount of the current sinking unit;
- and
- a control signal generation unit suitable for receiving the input voltage, the output voltage and a power-up signal, which is activated during the power-up operation, to generate a control signal activated during the power-up operation,
- wherein the current sinking unit is controlled by the control signal.
3 more elements
Dependencies are inferred from the claim text.