Method and system for compensating for variations in supply volt

Details Method and system for compensating for variations in supply volt Method and system for compensating for variations in supply volt

1999-05-04

2000-11-21

Young, Brian

Coded data generation or conversion

Digital code to digital code converters

To or from particular bit symbol

H03M 508

Patent

active

061509639

ABSTRACT:
A method and system produce a PWM signal using a comparator having first and second input terminals and an output terminal at which the PWM signal is produced. The method includes powering the comparator with a supply voltage and receiving a modulating signal at the first input terminal. The method creates a carrier signal with a constant frequency and a maximum amplitude equal to the supply voltage. The comparator receives the carrier signal at the second input terminal and compares the carrier signal to the modulating signal, thereby producing the PWM signal at the output terminal. By creating and using a carrier signal with a maximum amplitude equal to the supply voltage, the PWM signal produced by the method is immune from changes in the supply voltage.

REFERENCES:
patent: 6014093 (2000-01-01), Hayes

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