On the Efficient Implementation of Pulse-Width Modulated Digital Analog Converters
Küçük Resim Yok
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Gazi Univ
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Pulse-Width Modulated Digital-Analog Converter (PWM DAC) is the most popular digital-analog conversion structure in embedded system design. However, there is no explicit formulation existing in the literature for the efficient utilization of PWM DAC implementation regarding to resolution and switching noise considerations. In this paper, optimum PWM frequency formulization is given to limit switching noise less than the least significant bit in the implemented DAC structure. So that, PWM resolution is maximized regarding to the analog signal bandwidth, where analog bandwidth and switching noise are the tradeoff in the PWM DAC. In addition, to extend the limits of the PWM modulator, a hybrid R-2R and PWM structure is proposed for the resolution improvement, resulting as higher dynamic range for the total system.
Açıklama
Anahtar Kelimeler
Pulse-Width Modulation (PWM), Digital-Analog Conversion, PWM DAC, R-2R Network, Embedded Systems, Ladder Dacs
Kaynak
Gazi University Journal Of Science
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
30
Sayı
1
