10次チャネル・フィルタを搭載した低消費電力Zero-IFフル・セグメントISDB-T CMOSチューナの開発(アナログ,アナデジ混載,RF及びセンサインタフェース回路)

鎌田 隆嗣; 奥井 一規; 深澤 昌彦; 田中 一好; 呉 忠輝; 松岡 俊匡; 谷口 研二

doi:10.11485/itetr.33.39.0_135

33.39

Session ID : IST2009-77

DOI https://doi.org/10.11485/itetr.33.39.0_135

Conference information

Low-Power Zero-IF Full-segment ISDB-T CMOS Tuner with 10th-Order Channel Filters

Takatsugu KAMATA, Kazunori OKUI, Masahiko FUKASAWA, Kazuyoshi TANAKA, Chyuki GO, Toshimasa MATSUOKA, Kenji TANIGUCHI

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Keywords: ISDB-T, TV Tuner, Zero-IF receiver, CMOS, Baseband filter

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

A zero-IF Tuner IC with wide RF input range (92dB) and low power consumption (528mW in a single 3.3V supply) for full-segment ISDB-T digital broadcast reception was realized using 0.25μm RF-CMOS technology. Instead of external SAW filters, 10-th order baseband filters were implemented. The wideband receiver selects one of two LNAs in condition of full-segment ISDB-T 64QAM modulation (CR=3/4), provides either low-IF or direct-IF and its sensitivity achieved -80dBm.

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