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TEF6862 - Car Radio Enhanced Selectivity Tuner

Description

The TEF6862 is a single-chip car radio tuner for AM, FM and weather band reception providing AM double conversion for LW, MW and full range SW (11 m to 120 m bands) with IF1 = 10.7 MHz and IF2 = 450 kHz.

Features

  • I High dynamic range FM front-end mixer for conversion of FM RF (65 MHz to 108 MHz and USA weather band) to an IF frequency of 10.7 MHz; mixer provides inherent image rejection which can be switched from low injection LO to high injection LO via the I2C-bus I FM front-end AGC PIN diode drive circuit; AGC detection at the FM font-end mixer input and the IF filter input; AGC threshold for detection at the mixer input is programmable and keyed AGC function can be selected via the I2C-bus; the AGC PI.

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Full PDF Text Transcription

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www.DataSheet4U.com TEF6862 Car Radio Enhanced Selectivity Tuner (CREST) Rev. 01 — 14 September 2006 Product data sheet 1. General description The TEF6862 is a single-chip car radio tuner for AM, FM and weather band reception providing AM double conversion for LW, MW and full range SW (11 m to 120 m bands) with IF1 = 10.7 MHz and IF2 = 450 kHz. FM double conversion to IF1 = 10.7 MHz and IF2 = 450 kHz with integrated image rejection for both IF1 and IF2; integrated IF filter with variable bandwidth and automatic bandwidth control algorithm with flexibility via the I2C-bus; capable of US FM, Europe FM, Japan FM, East Europe FM and weather band reception; all FM bands can be selected using high injection LO or low injection LO in the FM mixer 1.
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