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

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2 Author(s)
Loke Kun Tan ; Broadcom Corp., Los Angeles, CA, USA ; Samueli, H.

A 200 MHz quadrature direct digital frequency synthesizer/complex mixer (QDDFSM) chip is presented. The chip synthesizes 12 b 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 and 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 of multiple chips with throughputs up to 800 MHz. The 0.8 μm triple level metal N-well CMOS chip has a complexity of 52000 transistors with a core area of 2.6×6.1 mm2. Power dissipation is 2 W at 200 MHz and 5 V

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:30 ,  Issue: 3 )