TDA9886.pdf tda9885.pdf

FEATURES· 5 V supply voltage· Gain controlled wide-band Vision IntermediateFrequency (VIF) amplifier, AC-coupled· MulTIstandard true synchronous demodulaTIon withacTIve carrier regeneraTIon: very linear demodulation,good intermodulation figures, reduced harmonics, andexcellent pulse response· Gated phase detector for L and L-accent standard· Fully integrated VIF Voltage Controlled Oscillator(VCO), alignment-free, frequencies switchable for allnegative and positive modulated standards via I2C-bus· Digital acquisition help, VIF frequencies of 33.4, 33.9,38.0, 38.9, 45.75, and 58.75 MHz· 4 MHz reference frequency input: signal fromPhase-Locked Loop (PLL) tuning system or operatingas crystal oscillator· VIF Automatic Gain Control (AGC) detector for gaincontrol, operating as peak sync detector for negativemodulated signals and as a peak white detector forpositive modulated signals· External AGC setting via pin OP1· Precise fully digital Automatic Frequency Control (AFC)detector with 4-bit digital-to-analog converter, AFC bitsreadable via I2C-bus· TakeOver Point (TOP) adjustable via I2C-bus oralternatively with potentiometer· Fully integrated sound carrier trap for 4.5, 5.5,6.0, and 6.5 MHz, controlled by FM-PLL oscillator· Sound IF (SIF) input for single reference Quasi SplitSound (QSS) mode, PLL controlled· SIF-AGC for gain controlled SIF amplifier, singlereference QSS mixer able to operate in highperformance single reference QSS mode and inintercarrier mode, switchable via I2C-bus· AM demodulator without extra reference circuit· Alignment-free selective FM-PLL demodulator with highlinearity and low noise· Four selectable I2C-bus addresses· I2C-bus control for all functions· I2C-bus transceiver with pin programmable ModuleAddress (MAD).2 GENERAL DESCRIPTIONThe TDA9885 is an alignment-free multistandard(PAL and NTSC) vision and sound IF signal PLLdemodulator for negative modulation only andFM processing.The TDA9886 is an alignment-free multistandard(PAL, SECAM and NTSC) vision and sound IF signal PLLdemodulator for positive and negative modulation,including sound AM and FM processing.3 APPLICATIONS· TV, VTR, PC, and STB applications.