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A 12-bit CMOS Current Steering D/A Converter for Embedded Systems

AutorRuiz Amaya, Jesús; Delgado-Restituto, Manuel ; Fernández-Bootello, Juan Francisco; Brandano, Davide; Castro-López, R. ; Rosa, José M. de la
Palabras claveDigital-to-Analog Converters
Current Steering
Fecha de publicación2006
EditorInstitute of Electrical and Electronics Engineers
CitaciónJ. Ruiz-Amaya, J. F. Fernández-Bootello, D. Brandano, R. Castro-López, J. M. de la Rosa, and M. Delgado-Restituto: "A 12-bit 80MS/s CMOS Current Steering D/A Converter for High-Speed Applications". Proceeding of the 2006 IEEE Asia Pacific Conference on Circuits and Systems.
ResumenThis paper describes the design of a 12-bit digital-to-analog converter for a wireline modem chip implemented in a 0.13μm digital CMOS technology. Transistor-level simulations from extracted layout at the nominal modem data rate of 8OMS/s show an Spurious-Free Dynamic-Range (SFDR) better than 62dB at Nyquist rate under industrial operation conditions (-40 to 85º temperature range and ±10% supply variations) and for all technology process corners. Additionally, the converter achieves a Multi-Tone Power Ratio (MTPR) higher than 59dB for different Discrete MultiTone (DMT) test patterns consisting of 1536 carriers that fall in the Nyquist band. Simulation results at a higher data rate of 200MS/s are also shown in the paper. The converter dissipates less than 150mW from a mixed 3.3/1.2V supply and occupies less than 1.7mm2.
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