Title :
A 12b 320 MSample/s current-steering CMOS D/A converter in 0.44mm/sup 2/
Author :
O´Sullivan, Kevin ; Gorman, Chris ; Hennessy, Michael ; Callaghan, Vincent
Author_Institution :
Silicon & Software Syst., Dublin, Ireland
Abstract :
This paper presents a 12-bit 320MSample/s current-steering D/A converter in 0.18/spl mu/m CMOS. In order to achieve high linearity and SFDR a large degree of segmentation has been used. A ´design for layout´ approach has allowed this to be done in an area of just 0.44mm/sup 2/ . The increased switching noise associated with a high degree of segmentation has been reduced by new latch architecture. DNL of /spl plusmn/0.4 LSB and INL of /spl plusmn/ 0.5 LSB have been measured. SFDR of 95 dB has been achieved. The validity of the techniques used has been proven by fabricating the converter in 2 separate 0.18/spl mu/m processes with similar results measured for both.
Keywords :
CMOS integrated circuits; digital-analogue conversion; integrated circuit layout; 0.18 microns; current-steering CMOS; design for layout approach; digital-to-analogue converter; increased switching noise; latch architecture; Decoding; Delay; Frequency synchronization; Impedance; Latches; Linearity; Signal synthesis; Silicon; Software systems; Switches;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257079
