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An Embedded 65 nm CMOS Baseband IQ 48 MHz–1 GHz Dual Tuner for DOCSIS 3.0

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24 Author(s)
Gatta, F. ; Broadcom Corp., Irvine, CA, USA ; Gomez, R. ; Shin, Y.J. ; Hayashi, T.
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An embedded CMOS digital dual tuner for DOCSIS 3.0 and set-top box applications is presented. The dual tuner down-converts a total of ten 6 MHz Annex B channels or eight 8 MHz Annex A channels, for a maximum data rate of 320 Mb/s in Annex B and 400 Mb/s in Annex A mode. The dual tuner exceeds all the stringent SCTE 40 specifications over the 48-1004 MHz bandwidth, without using any external components or SAW filters. Enabling technologies are a harmonic rejection front-end, a low-noise high-frequency resolution phase-locked loop (PLL) and digital image rejection. To our knowledge this is the first reported multi-channel Broadband Tuner embedded in a DOCSIS 3.0 System on a Chip implemented in a 65 nm pure digital CMOS technology.

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Solid-State Circuits, IEEE Journal of  (Volume:44 ,  Issue: 12 )