Title :
An FPGA-based re-configurable 24-bit 96kHz sigma-delta audio DAC
Author :
Cheung, Ray C C ; Pun, K.P. ; Yuen, Steve C L ; Tsoi, K.H. ; Leong, Philip H W
Author_Institution :
Dept. of Comput. Sci. & Eng., Chinese Univ. of Hong Kong, China
Abstract :
This paper presents a reconfigurable sigma-delta audio Digital-to-Analog Converter (DAC) which is suitable for embedded FPGA applications. The Sigma-Delta Modulator (SDM) design can be configured as a 3rd or 5th order SDM and allows different input word lengths. Different input sampling rates are also entertained by employing a programmable interpolator. The DAC accepts 16-/18-/20-/24-bit PCM data at sampling rates of 32/44.1/48/88.2/96 kHz for applications in CD, SACD and DVD audio.
Keywords :
digital-analogue conversion; field programmable gate arrays; pulse code modulation; sigma-delta modulation; 1 kHz; 16 bit; 18 bit; 2 kHz; 20 bit; 24 bit; 32 kHz; 44 kHz; 48 kHz; 88 kHz; 96 kHz; CD audio applications; DVD audio applications; PCM data; SACD audio applications; SDM design; compact disc audio applications; digital video disc audio applications; embedded FPGA applications; embedded field programmable applications; input sampling rates; programmable interpolator; pulse code modulated data; reconfigurable sigma-delta audio DAC; reconfigurable sigma-delta audio Digital-to-Analog Converter; sigma-delta modulator design; word lengths; Analog-digital conversion; Computer science; Consumer electronics; Delta-sigma modulation; Field programmable gate arrays; Finite impulse response filter; Frequency modulation; Interpolation; Phase change materials; Sampling methods;
Conference_Titel :
Field-Programmable Technology (FPT), 2003. Proceedings. 2003 IEEE International Conference on
Print_ISBN :
0-7803-8320-6
DOI :
10.1109/FPT.2003.1275738
