Title :
A calculation method to predict in-band harmonic distortion of ΣΔ D/A converters
Author :
t Eynde, F.O. ; Meulemans, P. ; Heyrman, F. ; Maes, B. ; Sansen, W.
Author_Institution :
Dept. Elektrotech., Katholieke Univ. Leuven, Heverlee, Belgium
Abstract :
The harmonic distortion of a Σ-Δ DAC due to the nonlinear analog components is investigated. The nonlinear long-term input-output characteristic is related to the short-term nonlinearities which appear within one clock period. Several DAC topologies are compared on a circuit level, and the harmonic distortion is expressed as a function of the circuit nonlinearities. A practical realization with 14-b accuracy for 16-MHz clock frequency is presented
Keywords :
digital-analogue conversion; electric distortion; 16 MHz; D/A converters; DAC topologies; calculation method; circuit level; distortion prediction; in-band harmonic distortion; nonlinear analog components; nonlinear long-term input-output characteristic; short-term nonlinearities; sigma-delta convertors; Circuit noise; Circuit simulation; Clocks; Delta-sigma modulation; Frequency; Harmonic distortion; Noise generators; Noise shaping; Quantization; Switched capacitor circuits;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100440
