Title
A 4 Gs/S 6-Bit 4-2 Segmented Current-Steering Dac With Compact Current Cells
Abstract
This paper presents a 6-bit 4GS/s current-steering digital-to-analog converter (DAC) for wideband systems. The 4-2 segmented structure is adopted for glitch reduction, and a dynamic decoder is proposed to maintain low power consumption and small area. In order to improve the high-frequency dynamic linearity, the forward-bias technique is employed to reduce the device sizes, and a compact one-dimensional (1-D) current source unit is used to further minimize the parasitic capacitance. The DAC is fabricated in 40-nm low-leakage CMOS process and occupies the active area of 0.036 mm(2). Over the entire Nyquist range, measurement results show a spurious free dynamic range (SFDR) of >39 dB at 2GS/s sampling rate and >29 dB at 4GS/s, respectively. The DAC consumes 28 mW power from 1.1 V supply voltage.
Year
DOI
Venue
2018
10.1587/elex.15.20180660
IEICE ELECTRONICS EXPRESS
Keywords
Field
DocType
CMOS current-steering DAC, dynamic decoder, compact current source unit, forward-bias technique, high dynamic linearity
Computer science,Electronic engineering
Journal
Volume
Issue
ISSN
15
16
1349-2543
Citations 
PageRank 
References 
0
0.34
6
Authors
3
Name
Order
Citations
PageRank
Bao Li118538.33
Long Zhao27813.96
Yu-Hua Cheng325.85