Title :
Simulation and implementation comparison of two 3 V-5 V 14-bit current-steering wideband CMOS DACs
Author :
Wikner, J. Jacob
Author_Institution :
Ericsson Components AB, Stockholm, Sweden
Abstract :
The influence of matching and output impedance on the performance of wideband current-steering DACs has been discussed. Both mathematical, simulated, and measured results was presented. Formulas and considerations were verified with simulations and measurements. A faster prediction of the performance using Matlab models can be achieved by using the error modeling. An SFDR larger than 74 dBc was measured at a sample frequency of 5 MHz. By reducing internal capacitance, simple improvement of matching, and reducing wire resistance, an SFDR improvement of 6-24 dB was found
Keywords :
digital-analogue conversion; 14 bit; 3 to 5 V; CMOS; Matlab models; SFDR; current-steering wideband DACs; error modeling; impedance matching; internal capacitance; output impedance; sample frequency; wire resistance;
Conference_Titel :
Advanced A/D and D/A Conversion Techniques and Their Applications, 1999. Third International Conference on (Conf. Publ. No. 466)
Conference_Location :
Glasgow
Print_ISBN :
0-85296-718-7
DOI :
10.1049/cp:19990481
