A monolithic digital chirp synthesizer chip with I and Q channels

Author

Van Andrews, G. ; Chang, C.T.M. ; Cayo, J.D. ; Sabin, S. ; White, W.A. ; Harris, M.P.

Author_Institution

Texas Instruments Inc., Dallas, TX, USA

fYear

1991

fDate

20-23 Oct. 1991

Firstpage

19

Lastpage

22

Abstract

A monolithic digital chirp synthesizer (DCS) chip has been developed using GaAs-AlGaAs HI/sup 2/L technology. The 6500 HBT gate DCs chirp is capable of producing linear frequency-modulated (chirp) waveforms or single frequency waveforms. The major components of the DCS are two 28-bit pipelined accumulators, a 1.8 kbit sine ROM, a 1.8 kbit cosine ROM, and two 8-bit digital-to-analog converters (DACs). The total chip area is 4.877 mm*6.172 mm using a minimum feature size of 1.5 microns. All components of the DCS are functional and the device has been clocked at 450 MHz.<>

Keywords

III-V semiconductors; aluminium compounds; bipolar integrated circuits; digital signal processing chips; frequency synthesizers; gallium arsenide; heterojunction bipolar transistors; integrated injection logic; military equipment; telecommunications computing; 1.5 micron; 1.8 kbit; 450 MHz; DACs; DSP; GaAs-AlGaAs; HBT; HI/sup 2/L technology; I channel; Q channel; cosine ROM; digital chirp synthesizer chip; heterojunction I/sup 2/L; linear FM waveforms; pipelined accumulators; sine ROM; single frequency waveforms; Chirp; Clocks; Distributed control; Frequency; Gallium arsenide; Heterojunction bipolar transistors; Instruments; Read only memory; Signal generators; Synthesizers;

fLanguage

English

Publisher

ieee

Conference_Titel

Gallium Arsenide Integrated Circuit (GaAs IC) Symposium, 1991. Technical Digest 1991., 13th Annual

Conference_Location

Monterey, CA, USA

Print_ISBN

0-7803-0196-X

Type

conf

DOI

10.1109/GAAS.1991.172623

Filename

172623