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US 2013/0257526 A1Published application
Circuit and method for removing noise
AssigneeHiDeep Inc.
InventorsSeyeob KIM, Youngho CHO, Bonkee KIM
Life of this patent
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Abstract
Disclosed is a noise removing circuit including: a voltage booster which boosts an input signal; and a regulator which receives an output signal of the voltage booster and reduces the signal's voltage higher than a specific value to the signal's voltage having the specific value and then outputs the signal.
Claims6
A noise removing circuit comprising:
- a charge pump which boosts an input signal;
- and
- a low dropout (LDO) regulator which receives an output signal of the charge pump and reduces the signal's voltage higher than a specific voltage to the specific voltage, and then outputs the signal,
- wherein noise is included in the input signal or in a ground,
- and wherein when it is assumed that the specific voltage is VOUT, a magnitude of the output signal of the charge pump is VCP and a peak-to-peak voltage of the noise is VNPP, a relationship of
- V
- CP
- -
- V
- NPP
- 2
- ≥
- V
- OUT
- is satisfied.
12 more elements
A method for removing noise, the method comprising:
- boosting an input signal;
- and
- receiving the boosted signal, reducing the signal's voltage higher than a specific voltage to the specific voltage, and then outputting the signal,
- wherein noise is included in the input signal or in a ground,
- and wherein when it is assumed that the specific voltage is VOUT, a magnitude of the boosted signal is VCP and a peak-to-peak voltage of the noise is VNPP, the boosting the signal outputs a signal satisfying a relationship of
- V
- CP
- -
- V
- NPP
- 2
- ≥
- V
- OUT
- .
12 more elements
Dependencies are inferred from the claim text.