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TDA9812 Scheda tecnica(PDF) 2 Page - NXP Semiconductors

Il numero della parte TDA9812
Spiegazioni elettronici  Multistandard VIF-PLL and FM-PLL/AM demodulator
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Produttore elettronici  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA9812 Scheda tecnica(HTML) 2 Page - NXP Semiconductors

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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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