A 1 V 6-bit 2.4 GS/s Nyquist CMOS DAC for UWB systems

A 6-bit 2.4 GS/s current-steering DAC fabricated in a 65 nm CMOS technology for ultra-wideband (UWB) systems is presented. The prototype achieves a measured spurious-free dynamic range (SFDR) of more than 36 dB over the Nyquist bandwidth at 2.4 GS/s. Among the 50 measured samples, DNL/ INL of 0.02/0...

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Bibliographic Details
Published in2010 IEEE MTT-S International Microwave Symposium p. 1
Main Authors Kim, B., Cho, M., Kim, Y., Kwon, J.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2010
Subjects
Bandwidth
Circuits
CMOS technology
Dynamic range
Energy consumption
Low voltage
Power supplies
Prototypes
Threshold voltage
Ultra wideband technology
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Summary:A 6-bit 2.4 GS/s current-steering DAC fabricated in a 65 nm CMOS technology for ultra-wideband (UWB) systems is presented. The prototype achieves a measured spurious-free dynamic range (SFDR) of more than 36 dB over the Nyquist bandwidth at 2.4 GS/s. Among the 50 measured samples, DNL/ INL of 0.02/0.02 LSB was the lowest achievable value. The DAC core occupies an area of merely 0.023 mm 2 through simplified circuit and careful layout. To operate from a relatively low analog power supply of 1 V, a portion of current cell is implemented using low threshold voltage devices. Total maximum power consumption, including the low voltage differential signaling (LVDS) stage, is 14 mW at 2.4 GS/s.
ISBN:1424460565
9781424460564
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2010.5517869