Sharp 28JF-76E, Руководство по обслуживанию

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28JF-76E
1 FEATURES
•
5 V supply voltage
•
Gain controlled wide-band Vision Intermediate
Frequency (VIF) amplifier, AC-coupled
•
Multistandard true synchronous demodulation with
active carrier regeneration: very linear demodulation,
good intermodulation figures, reduced harmonics, and
excellent pulse response
•
Gated phase detector for L and L-accent standard
•
Fully integrated VIF Voltage Controlled Oscillator
(VCO), alignment-free, frequencies switchable for all
negative and positive modulated standards via I
2
C-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 from
Phase-Locked Loop (PLL) tuning system or operating
as crystal oscillator
•
VIF Automatic Gain Control (AGC) detector for gain
control, operating as peak sync detector for negative
modulated signals and as a peak white detector for
positive modulated signals
•
External AGC setting via pin OP1
•
Precise fully digital Automatic Frequency Control (AFC)
detector with 4-bit digital-to-analog converter, AFC bits
readable via I
2
C-bus
•
TakeOver Point (TOP) adjustable via I
2
C-bus or
alternatively 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 Split
Sound (QSS) mode, PLL controlled
•
SIF-AGC for gain controlled SIF amplifier, single
reference QSS mixer able to operate in high
performance single reference QSS mode and in
intercarrier mode, switchable via I
2
C-bus
•
AM demodulator without extra reference circuit
•
Alignment-free selective FM-PLL demodulator with high
linearity and low noise
•
I
2
C-bus control for all functions
•
I
2
C-bus transceiver with pin programmable Module
Address (MAD)
•
Four I
2
C-bus addresses via MAD.
2 GENERAL DESCRIPTION
The TDA9885 is an alignment-free multistandard
(PAL and NTSC) vision and sound IF signal PLL
demodulator for negative modulation only and
FM processing.
The TDA9886 is an alignment-free multistandard
(PAL, SECAM and NTSC) vision and sound IF signal PLL
demodulator for positive and negative modulation,
including sound AM and FM processing.
3 APPLICATIONS
•
TV, VTR, PC and STB applications.
4 ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TDA9885T/V3 SO24 plastic small outline package; 24 leads; body width 7.5 mm SOT137-1
TDA9885TS/V3 SSOP24 plastic shrink small outline package; 24 leads; body width 5.3 mm SOT340-1
TDA9885HN/V3 HVQFN32 plastic, heatsink very thin quad flat package; no leads; 32 terminals;
body 5
×
5
×
0.85 mm
SOT617-1
TDA9886T/V3 SO24 plastic small outline package; 24 leads; body width 7.5 mm SOT137-1
TDA9886TS/V3 SSOP24 plastic shrink small outline package; 24 leads; body width 5.3 mm SOT340-1
ICs ADDITIONAL INFORMATION
TDA9886 (IC201)
Features