New pulse modulator with low switching frequency

Abstract

The author presents an integrating pulse modulator (analog signal converter) with the pulse frequency and duration modulation similar to sigma-delta modulation (with low switching frequency), without quantization. The modulator is characterized by the absence of the quantization noise inherent in sigma-delta modulator, and a low switching frequency, unlike the pulse-frequency modulator. The modulator is recommended, in particular, to convert signals at the input of the class D power amplifier.

Keywords

• quantization
• continuous readouts
• analog-pulse converter
• pulse modulator
• switching frequency
• class D amplifier