A 200-MHz quadrature digital synthesizer/mixer in 0.8-μm CMOS

Author

Tan, Loke Kun ; Samueli, Henry

Author_Institution

Broadband Telecom Inc., Los Angeles, CA, USA

fYear

1994

fDate

1-4 May 1994

Firstpage

59

Lastpage

62

Abstract

A 200-MHz quadrature direct digital frequency synthesizer/complex mixer chip is presented. The chip synthesizes sine and cosine waveforms with a spectral purity of 84.3 dBc. The frequency resolution is 0.047 Hz with a corresponding switching speed of 5 ns with a tuning latency of 14 clock cycles. The chip is also capable of frequency, phase and quadrature amplitude modulation. These modulation capabilities operate up to the maximum clocking frequency. The chip provides the capability of parallel operation to achieve either 2 or 4 times the maximum frequency. The 0.8-μm triple level metal N-well CMOS chip has 52,000 transistors in a die area of 2.5×6.1 mm². Power dissipation is 2 Watts at 200-MHz

Keywords

CMOS digital integrated circuits; VLSI; digital signal processing chips; frequency modulation; mixers (circuits); phase modulation; quadrature amplitude modulation; 0.8-μm CMOS; 0.8-μm triple level metal N-well CMOS chip; 2 W; 200 MHz; 200-MHz quadrature digital synthesizer; 5 ns; clock cycles; complex mixer chip; cosine waveforms; frequency modulation; frequency resolution; maximum clocking frequency; parallel operation; phase modulation; power dissipation; quadrature amplitude modulation; quadrature digital mixer; sine waveforms; spectral purity; switching speed; tuning latency; Bandwidth; Clocks; Frequency synthesizers; Hardware; Phase modulation; Quadrature amplitude modulation; Read only memory; Switches; Table lookup; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 1994., Proceedings of the IEEE 1994

Conference_Location

San Diego, CA

Print_ISBN

0-7803-1886-2

Type

conf

DOI

10.1109/CICC.1994.379766

Filename

379766