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A 0.3mm2 90-to-770MHz fractional-N Synthesizer for a digital TV tuner

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4 Author(s)
Kondou, M. ; Fujitsu Labs., Yokohama, Japan ; Matsuda, A. ; Yamazaki, H. ; Kobayashi, O.

A 0.3 mm2 fractional-N synthesizer covering the frequency range from 90 to 770 MHz needed for a digital TV tuner is presented. The synthesizer achieves the specifications of the ISDB-T/Tsb/Tmm standards while maintaining low spurious signals and small area by combining an FIR filtering technique and a circulating register. The phase noise at 1 MHz offset is -119 dBc/Hz. The worst spurious signals are below -61.2 dBc.

Published in:

Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International

Date of Conference:

7-11 Feb. 2010