The design of a low-voltage CSDAC current source array

Author

Xiaolei Wang ; Dawei Zhang ; Jielei Bai

Author_Institution

Dept. of Inst. of VLSI Design, Hefei Univ. of Technol., Hefei, China

fYear

2013

fDate

25-27 Oct. 2013

Firstpage

1

Lastpage

5

Abstract

To satisfy the requirement of the modern communication system and the mixed signal field, a kind of current source array is designed which applies to 12 bit, 1.2V and 400MSPS DAC in this paper. According to the design of the parameters of current source tubes which is based on the research of current source mismatch, this paper focuses on improving the current source output impedance technology and presenting a new kind of current source switching sequence. This designed current source array is put into DAC circuits and simulated on the basis of the SMIC 0.13um COMS technology. The simulation result shows that the non-linear error and the SFDR of the D/A meets the requirement of the design objectives.

Keywords

CMOS integrated circuits; constant current sources; digital-analogue conversion; SFDR; current source output impedance technology; current source switching sequence; low-voltage CSDAC current source array; mixed signal field; modern communication system; nonlinear error; size 0.13 mum; voltage 1.2 V; word length 12 bit; Current-steering DAC; output impedance; switch driver; unit current source;

fLanguage

English

Publisher

ieee

Conference_Titel

Anti-Counterfeiting, Security and Identification (ASID), 2013 IEEE International Conference on

Conference_Location

Shanghai

Type

conf

DOI

10.1109/ICASID.2013.6825289

Filename

6825289