Patent ID: 6407691
Filing Date: 2002-06-18
Classification: H02J,H02M,H03M,H04B,H04L,H04M

Abstract:
An isolated analog-to-digital converter system comprising:an analog-to-digital converter subsystem including an analog-to-digital converter for converting an analog signal to a digital data stream; a microcontroller subsystem for providing power, clock signals, and control signals as a single combined signal for the analog-to-digital converter, the single combined signal comprising a pulse train having a nominal frequency and having control signal pulse width modulated thereon; and an isolation subsystem for electrically isolating the analog-to-digital converter subsystem from the microcontroller subsystem, the isolation subsystem comprising: a first transformer, coupled to the microcontroller subsystem, for receiving the single combined signal as a differential input signal, and a rectifier, coupled to the first transformer, for rectifying the differential input signal to produce at least one power supply voltage for the analog-to-digital converter subsystem.