Book chapter
∑∆ Modulator System-Level Considerations for Hearing-Aid Audio Class-D Output Stage Application
This paper deals with a system-level design of a digital sigma-delta (∑∆) modulator for hearing-aid audio Class D output stage application. The aim of this paper is to provide a thorough discussion on various possibilities and tradeoffs of ∑∆ modulator system-level design parameter combinations - order, oversampling ratio (OSR) and number of bits in the quantizer - including their impact on interpolation filter design as well.
The system is kept in digital domain up to the input of the Class D power stage including the digital pulse width modulation (DPWM) block. Notes on the impact of the DPWM block on the modulated spectrum are provided.
Language: | English |
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Publisher: | IEEE |
Year: | 2012 |
Pages: | 103-106 |
Proceedings: | 2012 8th Conference on Ph.D. Research in Microelectronics and Electronics |
Types: | Book chapter |
ORCIDs: | Bruun, Erik |