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AssigneeTexas Instruments Incorporated
InventorsAlfio Zanchi, Marco Corsi
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A clock signal preamplifier comprises complementary pairs of differentially coupled transistors, with an output signal coupled to an inverter further comprising a totem-pole arrangement of complementary MOSFET transistors. The input signal to the preamplifier is typically sinusoidal, and the output signal is rectangular. Preferably, the differentially coupled transistors are bipolar, and a pair of diode damper circuits with bipolar transistors is preferably coupled to the complementary pairs of differentially coupled transistors. A reference voltage source is coupled to the control terminals of the damper transistors. A reference voltage source, which preferably comprises a totem-pole arrangement of complementary MOSFET transistors with its output node is coupled to its input node, provides a reference voltage for the diode damper circuits. Preferably, MOSFET transistors of the reference voltage source and MOSFET transistors of like kind of the inverter are configured to have substantially identical threshold voltages.
A clock signal preamplifier with an input signal and an output signal, the clock signal preamplifier comprising complementary pairs of differentially coupled transistors.
A digital signal processing system comprising a clock signal preamplifier that converts an input signal to an output signal, the clock signal preamplifier comprising complementary pairs of differentially coupled transistors.
A method of providing a preamplified output clock signal from an input clock signal, comprising the steps of:
Dependencies are inferred from the claim text.