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TDA9812 Scheda tecnica(PDF) 2 Page - NXP Semiconductors |
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TDA9812 Scheda tecnica(HTML) 2 Page - NXP Semiconductors |
2 / 32 page 1995 Mar 21 2 Philips Semiconductors Preliminary specification Multistandard VIF-PLL and FM-PLL/AM demodulator TDA9812 FEATURES • 5 V positive supply voltage • Gain controlled wide band VIF-amplifier (AC-coupled) • True synchronous demodulation with active carrier regeneration (very linear demodulation, good intermodulation figures, reduced harmonics, excellent pulse response) • Gated phase detector for L/L accent standard • VCO frequency switchable between L and L accent (alignment external) picture carrier frequency • Separate video amplifier for sound trap buffering with high video bandwidth • VIF AGC detector for gain control, operating as peak sync detector for B/G (optional external AGC) and peak white detector for L; signal controlled reaction time for L • Tuner AGC with adjustable Take Over Point (TOP) • AFC detector without extra reference circuit • AC-coupled limiter amplifier for sound intercarrier signal • Alignment-free FM-PLL demodulator with high linearity, switchable de-emphasis for FM • AM-SIF AGC detector for gain controlled SIF amplifier • AM demodulator without extra reference circuit • Stabilizer circuit for ripple rejection and to achieve constant output signals. GENERAL DESCRIPTION The TDA9812/T is an integrated circuit for multistandard vision IF signal processing and AM and FM sound demodulation in TV and VTR sets. ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA9812 SDIP32 plastic shrink dual in-line package; 32 leads (400 mil) SOT232-1 TDA9812T SO28 plastic small outline package; 28 leads body width 7.5 mm SOT136-1 |
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