Patent ID: 7209065
Filing Date: 2007-04-24
Classification: G04F,G11C,H03M

Abstract:
1. A system for converting an analog signal to a digital signal, the system comprising: a multiphase oscillator having a period of oscillation and providing a plurality of phase signals, each oscillating at the period of the multiphase oscillator; a sample and hold circuit for capturing and holding the analog signal in response to a phase signal of the multiphase oscillator; an integrator for converting the held analog signal into a pulse having a duration that is proportional to the magnitude of the analog signal; and a time-to-digital converter for converting the pulse into a digital signal, the time to digital converter including a plurality of sampling elements, each activated by the pulse and capturing one of the phase signals of the multiphase oscillator, and a binary counter for counting the periods of the multiphase oscillator; wherein the plurality of sampling elements and the binary counter provide the digital signal.