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TEF6721HL - Car radio tuner front-end

Description

The TEF6721HL is a single chip car radio tuner for AM, FM standard, FM In-Band On-Channel Digital Audio Broadcast (IBOC DAB) and weather band providing combined AM and FM gain controlled differential Intermediate Frequency (IF) output for the SAF7730H including the following functions: AM

Features

  • s FM mixer for conversion of FM Radio Frequency (RF) (64 MHz to 108 MHz and US weather band) to an IF of 10.7 MHz; the mixer provides inherent image rejection and can be switched from low injection to high injection Local Oscillator (LO) via the I2C-bus; two different mixer conversion gains can be selected via the I2C-bus s Automatic Gain Control (AGC) PIN diode drive circuit for FM RF AGC; AGC detection at FM mixer input and IF AGC amplifier input; AGC threshold for detection at FM mixer input i.

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TEF6721HL Car radio tuner front-end for digital IF Rev. 04 — 20 December 2005 Product data sheet 1. General description The TEF6721HL is a single chip car radio tuner for AM, FM standard, FM In-Band On-Channel Digital Audio Broadcast (IBOC DAB) and weather band providing combined AM and FM gain controlled differential Intermediate Frequency (IF) output for the SAF7730H including the following functions: • AM up-conversion tuner to an IF frequency of 10.7 MHz for Long Wave (LW)/Medium Wave (MW)/Short Wave (SW) (31 m, 41 m and 49 m bands) • FM single conversion tuner to an IF frequency of 10.
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