Title :
Design of an over-sampling digital filter for high-resolution Σ-ΔDAC
Author :
Yuqing, Deng ; Ning, Tang ; Cheng, Zhang ; Ke, Chen
Author_Institution :
Inf. & Commun. Coll., Guilin Univ. of Electron. Technol., Guilin, China
Abstract :
This paper presents an efficient way to implement an interpolation filter in 18bit Σ -Δ DAC. The filter based on multiterm interpolation principle, to over-sample (128x)the audio singal with the sample rate of 48kHz and the resolution of 18 bit. After system simulated in the matlab, implemented with VerilogHDL, the circuit is designed and simulated with Quartus II. The simulation result illustrates it could gain performance satisfactorily.
Keywords :
digital filters; interpolation; sigma-delta modulation; Matlab implementation; Quartus II simulation; VerilogHDL; frequency 48 kHz; high-resolution Σ-Δ DAC; multiterm interpolation filter; over-sampling digital filter; word length 18 bit; Digital filters; Hardware design languages; Information filters; Integrated circuit modeling; Interpolation; Publishing; ΣΔDAC interpolation filter; Matlab; over-sample;
Conference_Titel :
Electric Information and Control Engineering (ICEICE), 2011 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-8036-4
DOI :
10.1109/ICEICE.2011.5778366
