Title :
A 10-bit 1-GSample/s Nyquist current-steering CMOS D/A converter
Author :
Van den Bosch, Anne ; Borremans, Marc A F ; Steyaert, Michel S J ; Sansen, Willy
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ., Leuven, Heverlee, Belgium
fDate :
3/1/2001 12:00:00 AM
Abstract :
In this paper, a 10-bit 1-GSample/s current-steering CMOS digital-to-analog (D/A) converter is presented. The measured integral nonlinearity is better than ±0.2 LSB and the measured differential nonlinearity lies between -0.08 and 0.14 LSB proving the 10-bit accuracy. The 1-GSample/s conversion rate has been obtained by an, at transistor level, fully custom-designed thermometer decoder and synchronization circuit. The layout has been carefully optimized. The parasitic interconnect loads have been estimated and have been iterated in the circuit design. A spurious-free dynamic range (SFDR) of more than 61 dB has been measured in the interval from dc to Nyquist. The power consumption equals 110 mW for a near-Nyquist sinusoidal output signal at a 1-GHz clock. The chip has been processed in a standard 0.35-μm CMOS technology and has an active area of only 0.35 mm2
Keywords :
CMOS integrated circuits; digital-analogue conversion; 0.35 micron; 1 GHz; 10 bit; 110 W; Nyquist sampling; conversion rate; current-steering CMOS digital-to-analog converter; custom design; differential nonlinearity; integral nonlinearity; parasitic interconnect load; power consumption; spurious-free dynamic range; synchronization circuit; thermometer decoder; CMOS process; CMOS technology; Circuit synthesis; Clocks; Dynamic range; Energy consumption; Integrated circuit interconnections; Iterative decoding; Semiconductor device measurement; Synchronization;
Journal_Title :
Solid-State Circuits, IEEE Journal of
