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General description

The TDA18271HD is a Silicon Tuner IC designed mainly for terrestrial analog and digital TV reception. The TDA18271HD integrates the overall tuning function, including selectivity.

The TDA18271HD is compatible with all analog and digital TV standards and delivers a low IF signal to a demodulator (for analog TV) and/or channel decoder (for digital TV).

This specification is based on software version 3.4.

Features

■ Fully integrated RF tracking filters for unwanted signal suppression

■ Fully integrated IF selectivity (no need for external SAW filters)

■ Worldwide multistandard terrestrial (all analog and digital worldwide terrestrial standards supported)

■ Integrated loop-through and slave tuner output for straightforward multi-Silicon Tuner application

■ Fully integrated oscillators with no external components

■ Alignment free

■ Integrated wide-band gain control

■ Single 3.3 V power supply

■ Low power consumption

■ Crystal oscillator output buffer (16 MHz) for single crystal applications

■ I2C-bus interface compatible with 3.3 V and 5 V microcontrollers

■ Three Standby modes

■ RoHS packaging

Applications

Target applications

■ Hybrid (analog and digital TV) for PCTV, DVD-R and TV applications

■ Application optimization is described in application notes AN602, AN604 and AN605

Key benefits

■ The TDA18271HD is a Silicon Tuner targeting digital and analog TV applications. The aim is to match the performance of conventional Can tuners while reducing the size of the tuner function. Additionally, the following benefits are provided:

◆ Easy on-board integration

◆ Easy dual tuner configuration

◆ Drastic size reduction of the tuner function and power consumption