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US 9,160,324 B2Granted
Buffer circuit
AssigneeSK hynix Inc.
InventorTae-Jin Hwang
Life of this patent
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Abstract
A buffer circuit includes a buffering unit suitable for buffering an input signal and outputting an output signal and a feedback control unit suitable for adjusting a slew rate of the input signal in response to the output signal.
Claims15
A buffer circuit comprising:
- a differential amplifying unit suitable for amplifying a positive input signal and a negative input signal, and outputting an amplification output signal;
- a differential control signal generating unit suitable for receiving the amplification output signal then outputting a first control signal and a second control signal in response to the amplification output signal;
- a level shifting unit suitable for receiving the first control signal and the second control signal to control a level of the amplification signal by outputting a third control signal and a fourth control signal;
- and
- a feedback control unit suitable for adjusting slew rates of the positive input signal and the negative input signal in response to the third control signal and the fourth control signal, respectively.
2 more elements
A buffer circuit comprising:
- a differential amplifying unit suitable for amplifying a positive input signal and a negative input signal, and outputting an amplification output signal;
- a differential control signal generating unit suitable for receiving the amplification output signal then outputting a first control signal and a second control signal in response to the amplification output signal;
- and
- a feedback control unit suitable for adjusting slew rates of the positive input signal and the negative input signal in response to the first control signal and the second control signal, respectively.
1 more element
A buffer circuit comprising:
- a differential amplifying unit suitable for amplifying a positive input signal and a negative input signal, and outputting an amplification output signal;
- a differential control signal generating unit suitable for receiving the amplification output signal then outputting a first control signal and a second control signal in response to the amplification output signal;
- a feedback control unit having a first switch and a first capacitor corresponding to the positive input signal, and a second switch and a second capacitor corresponding to the negative input signal and suitable for adjusting slew rates of the positive input signal and the negative input signal in response to the third control signal and the fourth control signal, respectively;
- and
- a supply voltage control unit that supplies voltage to the first switch and the second switch of the feedback control unit in response to the amplification output signal.
2 more elements
Dependencies are inferred from the claim text.