Centaur Technology, Inc.

David Stachelski

In one embodiment, a droop reference, comprising: a programmable low pass filter configured to filter a supply voltage; and a digital-to-analog converter configured to provide a scaled version of the filtered supply voltage.

Droop reference with programmable filter

In one embodiment, a spread spectrum clock generator, comprising a digital delta sigma modulator coupled to a fractional N, phase locked loop (PLL), the PLL comprising a discrete-time capacitance multiplier loop filter, the discrete-time capacitance multiplier loop filter comprising: an amplifier comprising a non-inverting input and an inverting input; a first switched capacitor resistor and a capacitor coupled to the non-inverting input, the capacitor coupled between the first switched capacitor resistor and the non-inverting input; and a second switched capacitor resistor coupled to the inverting input.

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Austin, TX, United States of America

David Stachelski