Title :
Resistive correction of low output impedance high-speed current-steering DACs
Author :
Leuenberger, Spencer ; Waters, Allen ; Un-Ku Moon
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
Current-steering digital-to-analog converters are the architecture of choice in high-resolution high-speed applications. However, they are still affected by non-linearity that becomes worse with higher resolutions and higher speeds. This paper proposes a method of correction for one of the sources of non-linearity. This method is analyzed for its robustness to matching and absolute errors. The proposed method is analyzed using Monte-Carlo analysis, and then verified at the transistor level with simulations. A transistor level 12 bit 1GS/s digital-to-analog converter is simulated using a 65nm process. The transistor level simulations show a 20 dB improvement in spurious-free dynamic range.
Keywords :
Monte Carlo methods; digital-analogue conversion; Monte-Carlo analysis; absolute errors; digital-to-analog converters; high-resolution high-speed applications; low output impedance current-steering DAC; matching errors; resistive correction; size 65 nm; spurious-free dynamic range; transistor level simulations; word length 12 bit; CMOS integrated circuits; Impedance; Monte Carlo methods; Resistors; Timing; Transistors;
Conference_Titel :
Electronics, Circuits and Systems (ICECS), 2014 21st IEEE International Conference on
DOI :
10.1109/ICECS.2014.7050021
