Beko P7 Service Manual page 39

2
I C-bus controlled single and multistandard
alignment-free IF-PLL demodulators
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
• 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
2
readable via I C-bus
• TakeOver Point (TOP) adjustable via I
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
4 ORDERING INFORMATION
TYPE NUMBER
TDA9885T/V3
TDA9885TS/V3 SSOP24
TDA9885HN/V3 HVQFN32
TDA9886T/V3
TDA9886TS/V3 SSOP24
2
C-bus or
NAME
SO24 plastic small outline package; 24 leads; body width 7.5 mm
plastic shrink small outline package; 24 leads; body width 5.3 mm
plastic, heatsink very thin quad flat package; no leads; 32 terminals;
body 5 × 5 × 0.85 mm
SO24 plastic small outline package; 24 leads; body width 7.5 mm
plastic shrink small outline package; 24 leads; body width 5.3 mm
• 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
• AM demodulator without extra reference circuit
• Alignment-free selective FM-PLL demodulator with high
2
C-bus
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.
PACKAGE
DESCRIPTION
TDA9885; TDA9886
2
C-bus
VERSION
SOT137-1
SOT340-1
SOT617-1
SOT137-1
SOT340-1