Title :
A monolithic digital chirp synthesizer chip with I and Q channels
Author :
Andrews, Van ; Chang, Christopher T M ; Cayo, John D. ; Sabin, Steven ; White, William A. ; Harris, Michael P.
Author_Institution :
Texas Instruments Inc., Dallas, TX, USA
fDate :
10/1/1992 12:00:00 AM
Abstract :
A monolithic digital chirp synthesizer (DCS) chip has been developed using GaAs/AlGaAs HI2L technology. The 6500-HBT-gate DCS chip is capable of producing linear frequency-modulated (chirp) waveforms or single-frequency waveforms. The major components of the DCS are two 28-b pipelined accumulators, a 1.8 kb sine ROM, a 1.8 kb cosine ROM, and two 8 b digital-to-analog converters (DACs). The total chip area is 4.877 mm×6.172 mm using a minimum feature size of 1.5 μm. All components of the DCS are fully functional and the device has been clocked to 450 MHz with a power dissipation of 18 W
Keywords :
III-V semiconductors; aluminium compounds; bipolar integrated circuits; digital integrated circuits; frequency synthesizers; gallium arsenide; integrated injection logic; 1.5 micron; 18 W; 450 MHz; 6500-HBT-gate DCS chip; GaAs-AlGaAs; HI2L technology; cosine ROM; digital-to-analog converters; linear frequency modulated waveforms; minimum feature size; monolithic digital chirp synthesizer chip; pipelined accumulators; power dissipation; sine ROM; single-frequency waveforms; Chirp; Clocks; Digital-analog conversion; Distributed control; Frequency; Gallium arsenide; Power dissipation; Read only memory; Signal generators; Synthesizers;
Journal_Title :
Solid-State Circuits, IEEE Journal of
