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TDA9881

Part Number	TDA9881
Manufacturer	NXP
Description	Alignment-free vision and FM sound IF PLL demodulator
Published	Jun 17, 2010
Detailed Description	TDA9881 Rev. 01 — 16 November 2004 www.DataSheet4U.com Alignment-free vision and FM sound IF PLL demodulator for negat...
Datasheet	TDA9881 PDF File

Overview

TDA9881 Rev.
01 — 16 November 2004 www.
DataSheet4U.
com Alignment-free vision and FM sound IF PLL demodulator for negative modulated TV standards Product data sheet 1.
General description The TDA9881 is an alignment-free multistandard (PAL and NTSC) vision and sound IF signal PLL demodulator for negative modulation, including Quasi Split Sound (QSS) or intercarrier FM processing.
2.
Features s 5 V supply voltage s Gain controlled wideband Vision Intermediate Frequency (VIF) ampliﬁer; AC-coupled s Multistandard true synchronous demodulation for negative modulated standards with active carrier regeneration: very linear demodulation, good intermodulation ﬁgures, reduced harmonics and excellent pulse response s Fully integrated VIF Voltage Controlled Oscillator (VCO), alignment-free, frequencies switchable via logic pin VIF0 and pin QSSO with resistor s Digital acquisition help circuit, VIF frequencies of 38.
0 MHz, 38.
9 MHz, 45.
75 MHz and 58.
75 MHz s 4 MHz reference frequency input signal from Phase-Locked Loop (PLL) tuning system or operating as crystal oscillator s VIF Automatic Gain Control (AGC) detector for gain control; operating as peak sync detector s VIF AGC monitor output at pin VAGC s Precise fully digital Automatic Frequency Control (AFC) detector with 4-bit digital-to-analog converter s TakeOver Point (TOP) adjustable with potentiometer s Fully integrated sound carrier trap for 4.
5 MHz, 5.
5 MHz, 6.
0 MHz and 6.
5 MHz; controlled by FM PLL oscillator s Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode; PLL controlled s SIF AGC for gain controlled SIF ampliﬁer; single reference QSS mixer able to operate in high performance single reference QSS mode or in intercarrier mode; switchable via SIF input pins s Alignment-free selective FM PLL demodulator with high linearity and low noise.
3.
Applications s TV, VTR, PC and Set-Top Box (STB) applications.
Philips Semiconductors TDA9881 Alignment-free vision and FM sound IF PLL demodulator www...

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