Kniha Digital Pulse Width Modulator Huiyun Li

Digital Pulse Width Modulator

Low-power, Low-Distortion, for Digital Class D Amplifier

Autor: Huiyun Li
Jazyk: Angličtina
Väzba: Brožovaná
Vydavateľ: VDM Verlag
Dostupnosť: Skladom u dodávateľa
Odosielame za 9-15 dní
47.49
We describe the design of a micropower digital§pulsewidth modulator (PWM) for a hearing instrument §...

Informácie o knihe

Autor
Jazyk
Angličtina
Väzba
Kniha - Brožovaná
Vydalo
2009
Stránok
96
EAN
9783639178760
ISBN
3639178769
Enbook ID
06826122
Vydavateľ
Hmotnosť
150
Rozmery
152 x 229 x 6

Kompletný popis

We describe the design of a micropower digital§pulsewidth modulator (PWM) for a hearing instrument §Class D amplifier. The PWM embodies a novel delta-§compensation sampling process and a novel pulse §generator.The delta-compensation sampling process is§sampled at the same low rate as reported algorithmic §sampling processes and it features a similar low §total harmonic distortion (THD). Its arithmetic §computation is however, substantially simplified.§We analytically derive the double Fourier series §expression and show that the THD is low.The pulse§generator is based on a hybrid 9-b counter 3-b §tapped-delay-line. We investigate the compromise §between the different design parameters that affect §its power dissipation and THD. The complete proposed §PWM features a simple circuit implementation, §micropower low voltage operation, low sampling rate §and low harmonic distortion, thereby rendering it §suitable for a practical digital hearing instrument.

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