Title
Auxiliary testability design schemes for CMOS DACs with ultrahigh sampling rates
Abstract
Current-steering CMOS digital-to-analog converters (DACs) are widely used ultrahigh-speed systems. However, two main testability problems arise with sampling rates above tens of gigabits: the difficulty of generating input digital testing patterns at gigabit data rates, and the restricted analog output bandwidth due to the parasitic capacitance. To overcome above difficulties, the paper presents two auxiliary design schemes. One is on-chip register-based memory for providing high input digital data rates above Gb/s, and the other is the output bandwidth enhancement technique with passive inductors. Two chips are designed employing the presented schemes. The measurement results of 6.4GS/s DAC prototype show the auxiliary on-chip memory can generate parallel gigabit data properly. The post-layout simulation results of 20GS/s DAC indicate the presented bandwidth extension scheme achieves >12GHz -3dB bandwidth, nearly 50% bandwidth improvement.
Year
DOI
Venue
2017
10.1109/ASICON.2017.8252405
2017 IEEE 12th International Conference on ASIC (ASICON)
Keywords
Field
DocType
auxiliary testability design schemes,current-steering CMOS digital-to-analog converters,ultrahigh-speed systems,auxiliary on-chip memory,on-chip register-based memory,analog output bandwidth,CMOS DAC
Testability,Gigabit,Parasitic capacitance,Computer science,Bandwidth extension,Inductor,CMOS,Converters,Electronic engineering,Bandwidth (signal processing)
Conference
ISSN
ISBN
Citations 
2162-7541
978-1-5090-6626-1
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Bao Li118538.33
Long Zhao204.06
Yu-Hua Cheng325.85