Pulse duration modulation analog digital conversion

摘要

Analog digital conversion method and the device which use pulse duration modulation in order precision to convert the analog signal well securely are offered. According to this method and the device, the analog digital transmitter which satisfies the request in the harshest environment (ADC) is actualization possible. Furthermore, ADC which satisfies the high accuracy which is required with many uses is actualization possible. This method and ADC which relates to the device the analog input which is received to the pulse duration modulation signal of the duty cycle which responds to analog signal input convert. As for the pulse duration modulation signal by duty cycle mechanism, duty cycle of the shift pulse width modulation signal is decided. The digital value which is proportionate to the analog signal with the duty cycle which is decided, is formed. With this ideal method and the device, at the same time with wide-ranging environment enabled the accuracy you can obtain ADC of high reliability.