Title :
12 bit high speed delta-sigma coder using only 1 bit quantizers
Author :
Poller, M. ; Morche, Dominique ; Balestro, F. ; Senn, P.
Author_Institution :
ELEC Dept., Telecom Paris
Abstract :
A fourth order cascaded ΔΣ-coder is presented, which consists of two modified second order converters (Biquads) rather than a combination of conventional ones. The Biquad structure contains zeros in the transfer function of the noise shaping filter, thereby either improving resolution or allowing a decreased oversampling ratio, without increasing power consumption
Keywords :
biquadratic filters; cascade networks; quantisation (signal); sigma-delta modulation; transfer functions; zero assignment; 1 bit; 12 bit; biquads; fourth order cascaded converter; high speed delta-sigma coder; noise shaping filter; oversampling ratio; power consumption; resolution; second order converters; single bit quantizers; transfer function; zeros; Adders; Circuits; Delta modulation; Delta-sigma modulation; Digital-analog conversion; Energy consumption; Equations; Filters; Flip-flops; Network address translation; Noise shaping; Quantization; Transfer functions; Voltage;
Conference_Titel :
Circuits and Systems, 1994., Proceedings of the 37th Midwest Symposium on
Conference_Location :
Lafayette, LA
Print_ISBN :
0-7803-2428-5
DOI :
10.1109/MWSCAS.1994.519022
