The design of 8-bit CMOS digital to analog converter

Author

Tan, G.H. ; Wagiran, R. ; Sidek, Roslina

Author_Institution

Dept. of Electr. & Electron. Eng., Malaysia Putra Univ., Serdang

fYear

2000

fDate

2000

Firstpage

231

Lastpage

234

Abstract

This paper describes a high-speed current switching CMOS digital analog converter (DAC) circuit that achieves 8-bit resolution, low differential nonlinearity (DNL), 20M samples per second conversion rate, low glitch energy and 5 V power supply voltage by using the MOSIS SCNA20 2 μm process. The converter is based on current division by using a segmentation technique. The current switching is used instead of voltage switching because current can be switched in and out of a circuit faster than voltage. The developed DAC employs two internal DACs. Each internal DAC has its own advantages. This DAC used thermometer code for three bit MSBs and R2R ladder for 5 bit LSBs

Keywords

CMOS integrated circuits; current-mode circuits; digital-analogue conversion; high-speed integrated circuits; integrated circuit design; signal resolution; CMOS digital to analog converter; CMOS digital to analog converter design; LSBs; MOSIS SCNA20 process; MSBs; R2R ladder; conversion rate; current division-based converter; current switching; current-mode DACs; differential nonlinearity; glitch energy; high-speed current switching CMOS DAC; internal DACs; power supply voltage; resolution; segmentation technique; thermometer code; voltage switching; Analog-digital conversion; CMOS analog integrated circuits; CMOS digital integrated circuits; CMOS process; Digital-analog conversion; Energy resolution; Power supplies; Switching circuits; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Electronics, 2000. Proceedings. ICSE 2000. IEEE International Conference on

Conference_Location

Guoman Port Dickson Resort

Print_ISBN

0-7803-6430-9

Type

conf

DOI

10.1109/SMELEC.2000.932469

Filename

932469