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TDA9898HL中文资料

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TDA9897; TDA9898

Multistandard hybrid IF processing

Rev. 03 — 11 January 2008

TDA9898HL中文资料

Product data sheet

1.General description

TheIntegratedCircuit(IC)issuitableforIntermediateFrequency(IF)processingincludingglobalmultistandardAnalogTV(ATV),DigitalVideoBroadcast(DVB)andmonoFMradiousingonly1ICand1to3 xedSurfaceAcousticWaves(SAWs)(applicationdependent).TDA9898 including LandL-accent standard. TDA9897 without LandL-accent standard.

2.Features

2.1General

IIIII

5V supply voltage

I2C-bus control over all functions

Four I2C-bus addresses provided; selection by programmable Module Address (MAD)Three I2C-bus voltage level supported; selection via pin BVS

Separate gain controlled ampli ers with input selector and conversion for incoming IF[analog Vision IF (VIF) or Sound IF (SIF) or Digital TV (DTV)] allows the use ofdifferent lter shapes and bandwidths

All conventional ATV standards applicable by using DTV bandwidth window[Band-Pass (BP)] lter

Easytousedefaultsettingsforalmosteverystandardprovided,selectableviaI2C-busTwo4MHzreferencefrequencystages;the rstoneoperatesascrystaloscillator,thesecond one as external signal input

Stabilizer circuit for ripple rejection and to achieve constant output signalsSmallest size, simplest application

ElectroStatic Discharge (ESD) protection for all pins

IIIIII

2.2Analog TV processing

IGain controlled wide-band VIF ampli er; AC-coupled

IMultistandard true synchronous demodulation with active carrier regeneration: verylinear demodulation, good intermodulation gures, reduced harmonics and excellentpulse response

IInternal Nyquist slope processing; switch-off able for alternative use of inexpensiveNyquist slope SAW lter with additive video noise improvementIGated phase detector for LandL-accent standards

IFully integrated VIF Voltage-Controlled Oscillator (VCO), alignment-free, frequenciesswitchable for all negative and positive modulated standards via I2C-bus

IVIF Automatic Gain Control (AGC) detector for gain control; operating as a peak syncdetector for negative modulated signals and as a peak white detector for positivemodulated signals

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