A 10GHz 8-bit Direct Digital Synthesizer implemented in GaAs HBT technology

Author

Chen, Gaopeng ; Wu, Danyu ; Jin, Zhi ; Wu, Jin ; Liu, Xinyu

Author_Institution

Inst. of Microelectron., Chinese Acad. of Sci., Beijing, China

fYear

2010

fDate

23-25 May 2010

Firstpage

425

Lastpage

428

Abstract

This paper presents a 10GHz 8-bit Direct Digital Synthesizer (DDS) Microwave Monolithic Integrated Circuit (MMIC) implemented in 1μm GaAs HBT technology. The DDS takes a Double-Edge-Trigger (DET) 8-stage pipeline accumulator with sine-weighted DAC based ROM-less architecture, that can maximize the utilization ratio of GaAs HBT´s high-speed potential. With an output frequency up to 5GHz, the DDS gives an average Spurious Free Dynamic Range (SFDR) of 23.24dBc through the first Nyquist band, and consumes 2.4W of DC power from a single -4.6V DC supply. Using 1651 GaAs HBT transistors, the total area of the DDS chip is 2.4×2.0mm².

Keywords

MMIC; direct digital synthesis; heterojunction bipolar transistors; 8-stage pipeline accumulator; HBT technology; HBT transistors; Nyquist band; ROM-less architecture; direct digital synthesizer; double-edge-trigger; frequency 10 GHz; heterojunction bipolar transistors; microwave monolithic integrated circuit; power 2.4 W; sine-weighted DAC; size 1 mum; spurious free dynamic range; voltage -4.6 V; word length 8 bit; Dynamic range; Frequency; Gallium arsenide; Heterojunction bipolar transistors; Integrated circuit technology; MMICs; Microwave technology; Monolithic integrated circuits; Pipelines; Synthesizers; Accumulator; Double-Edge-Trigger; Gallium Arsenide (GaAs); ROM-less DDS; digital to analog converter (DAC); digital-to-analog converter (DAC); direct digital frequency synthesizer (DDFS); direct digital synthesizer (DDS); heterojunction bipolar transistor (HBT);

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium (RFIC), 2010 IEEE

Conference_Location

Anaheim, CA

ISSN

1529-2517

Print_ISBN

978-1-4244-6240-7

Type

conf

DOI

10.1109/RFIC.2010.5477248

Filename

5477248