A 22GS/s 6b DAC with integrated digital ramp generator

A 22GS/s 6b DAC is presented that includes a digital ramp pattern generator. The DAC core and ramp generator consume 2W and 1.2W respectively operating from 3.3V. The DAC produces a differential signal up to 1.3V/sub pp/ DNL<0.5LSB and INL<0.9LSB are measured. The highest glitch energy is 0.5pVs. Settling times are 70 and 40ps for full- and half-scale transitions, respectively.

[1]  R. van de Plassche,et al.  A 1 Gs/s, 10b digital-to-analog converter , 1994, Proceedings of IEEE International Solid-State Circuits Conference - ISSCC '94.

[2]  A. Gutierrez-Aitken,et al.  Ultra high speed direct digital synthesizer using InP DHBT technology , 2001 .

[3]  R. Adams,et al.  A 3V CMOS 400mW 14b 1.4GS/s DAC for multi-carrier applications , 2004, 2004 IEEE International Solid-State Circuits Conference (IEEE Cat. No.04CH37519).

[4]  T.A. Schaffer,et al.  A 2 GHz 12-bit digital-to-analog converter for direct digital synthesis applications , 1996, GaAs IC Symposium IEEE Gallium Arsenide Integrated Circuit Symposium. 18th Annual Technical Digest 1996.

[5]  R. Stevens,et al.  A 3b 40GS/s ADC-DAC in 0.12/spl mu/m SiGe , 2004, 2004 IEEE International Solid-State Circuits Conference (IEEE Cat. No.04CH37519).

[6]  W. Sansen,et al.  A 10-bit 1-GSample/s Nyquist current-steering CMOS D/A converter , 2001, Proceedings of the IEEE 2000 Custom Integrated Circuits Conference (Cat. No.00CH37044).