Symmetrically operating single-ended input buffer devices and methods
First Claim
1. An input buffer comprising:
- an amplifier circuit configured to receive an input signal and a reference signal, the amplifier circuit configured to generate an output signal responsive, at least in part, to the input signal transitioning, the amplifier circuit being capacitively coupled to receive a portion of the input signal in a manner such that a rate at which the amplifier circuit is configured to generate the output signal increases.
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Accused Products
Abstract
Embodiments are described including those pertaining to an input buffer having first and second complementary input terminals. One example buffer has a symmetrical response to a single input signal applied to the first input terminal by mimicking the transition of a signal applied to the second input terminal in the opposite direction. The buffer includes two amplifier circuits structured to be complementary with respect to each other. Each of the amplifier circuits includes a first transistor having a first input node that receives an input signal transitioning across a range of high and low voltage levels, and a second transistor having a second input node that receives a reference signal. The first input node is coupled to the second transistor through a capacitor to mimic the second input node transitioning in the direction opposite to the transition of the input signal.
16 Citations
19 Claims
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1. An input buffer comprising:
an amplifier circuit configured to receive an input signal and a reference signal, the amplifier circuit configured to generate an output signal responsive, at least in part, to the input signal transitioning, the amplifier circuit being capacitively coupled to receive a portion of the input signal in a manner such that a rate at which the amplifier circuit is configured to generate the output signal increases. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of buffering an output signal comprising:
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generating an output signal responsive, at least in part, to an input signal; capacitively coupling at least a portion of a transition of the input signal in the opposite direction; and generating the output signal at a rate responsive, at least in part, to the input signal transitioning and said capacitively coupling at least a portion of a transition of the input signal in the opposite direction. - View Dependent Claims (9, 10, 11, 12)
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13. An method, comprising:
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receiving an input signal; adjusting an ON-resistance of first and second current mirror transistors; and generating the output signal at a rate based, at least in part, on the input signal, wherein the rate is based, at least in part, on the adjusted ON-resistance. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification