TDA4433 ,TV SIGNAL IDENTIFICATION CIRCUIT AND AFC INTERFACETDA4433TV SIGNAL IDENTIFICATION CIRCUIT AND AFC INTERFACE.IDENTIFICATION OF TRUE TV STATIONSONLY.LO ..
TDA4443 ,MULTISTANDARD VIDEO IF AMPLIFIERTDA4443MULTISTANDARD VIDEO IF AMPLIFIER.SWITCHING OFF THE IF AMPLIFIER WHEN DESCRIPTIONOPERATING IN ..
TDA4445 ,SOUND IF AMPLIFIERTDA4445ATDA4445BSOUND IF AMPLIFIER.QUADRATURE INTERCARRIER DEMODU-LATOR.VERY HIGH INPUT SENSITIVITY ..
TDA4445A ,Quasi Parallel Sound Processing with Quadrature Intercarrier DemodulatorGENERAL DESCRIPTION essing, independentfrom AM.Linear quadrature demodulatorThis circuit includes t ..
TDA4445A ,Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulatorapplications (B/G and L)No adjustmentof the AM demodulatorLow AM distortionPIN CONNECTIONSIF INPUT ..
TDA4445B ,Quasi Parallel Sound Processing with Quadrature Intercarrier DemodulatorBLOCK DIAGRAMSTDA4445ATDA4445B
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TDA4433
TV SIGNAL IDENTIFICATION CIRCUIT AND AFC INTERFACE
TDA4433 SIGNAL IDENTIFICATION CIRCUIT AND AFC INTERFACE
OUTPUTA
AFC ”S” CURVE INPUT
STABILIZED VOLTAGE OUT
IDENTIFICATION TIME CONSTANT
OUTPUTB
N.C.
GND
VIDEO SIGNAL INPUT FLYBACK INPUT
SENSITIVITY CONTROL
IDENTIFICATION SIGNAL OUTPUT
N.C.
N.C.
PIN CONNECTIONS
DIP14(Plastic Package)
ORDER CODE: TDA4433
.IDENTIFICATION OF TRUE TV STATIONS
ONLY.LOW IMPEDANCE OUTPUT OF THE IDENTI-
FICATION SIGNAL.DIGITAL CONTROL SIGNAL FOR AUTOMAT- SEARCHAND AFC OPERATION.THERMAL COMPENSATION OF THE VOLT-
AGEREGULATOR
DESCRIPTIONThe TDA4433isa monolithic integrated circuitina lead dual-in-line plastic package.It integrates
the following functions: TV signalidentificator- Sync. separator- Thresh-
old detector- Digital Interface- Voltage regulator.
4433-02.EPS Open collector outputs
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit Supply Voltage (pin1) 16 V Voltageat Pin3 16 V
V13 Voltageat Pin13 –5,+6 V;I2 Pin6 and Pin2 Current 1 mA
I10 Pin10 Current 2 mA
I11 Pin11 Current 2 mA
I12 Pin12 Current ±2 mA
Ptot Total Power Dissipationat Tamb≤70°C 800 mW
Tstg,Tj Storage and Junction Temperature –40, +150 °C
4433-01.TBL
THERMAL DATA
Symbol Parameter Value UnitRth j-amb Thermal Resistance Junction-ambient Max. 100 °C/W
4433-02.TBL
ELECTRICAL CHARACTERISTICS(referto the test circuit;VS =12V, Tamb =25 °C, unlessotherwisespecified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Supply Voltage Range (pin1) 10.8 14.5 V Supply Current (pin1) Vs= 14.5V 30 mA Output Voltage ftuning
ftuning =fo 0.8 V
ftuning >fo 0.8 V Output Voltage ftuning
TDA4433
ELECTRICAL CHARACTERISTICS (continued)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Input Voltage Range 4 8 V
V3U UpperThreshold Voltage See Figure2 V4 –25 V4 V4 +25 mV
V3L LowerThreshold Voltage See Figure2 V4– 425 V4– 400 V4– 375 mV Input Resistance V3 =V4 1.4 MΩ Regulated Voltage I4=1 mA 6.6 V Output Current 1mA Output Differential Resistance 60 Ω
ΔV4
ΔTS Regulated Voltage Thermal Drift ±2 mV/°C
V10 Identification Output Voltage No Identification,I10=1 mA Vs– 1.3 V
Identification 20 mV
R10 Output Resistance 100 Ω
V12 Switchoff Threshold Voltage 1 V
I12 Input Flyback Current 0.5 1.5 mA
R12 Input Resistance V12=3V 10 kΩ
tfly Flyback Pulse Duration 10 17 μsec. Time Delay between Leading Edges Flyback Pulse and Sync.Pulse 3.5 μsec.
V13 Video Input Signal (peakto peak) 2.5 4.5 V
V13 Sync. Pulse Amplitude
(above black level)
0.52 V
R13 Input Resistance 1.5 kΩ
4433-04.TBL
Input Voltage(V3) Output Voltage (V2) Output Voltage (V6) >V4 High level Low Level–0.4V4433-05.TBL
4433-03.EPS
Figure1: Medium Output Voltagevs. Supply
Voltage
4433-04.EPS
Figure2: Digital AFC Threshold Voltage vs.
Frequency
TDA4433
22nF5kΩ
6.2kΩ
10kΩ
100kΩ
56kΩ
22kΩ
82kΩ
47kΩ
3.3kΩ 4 11 5
S1c S1d S1e S2 2
614 1
TDA4433
150pF
5.6kΩ
47nF
0or3V(DC)
0or3V(DC)
S1a
S1b
11kΩ
11kΩ
11kΩ
0.1μF =12VS
DigitalAFC
outTDA4433
Identif.out
Pos. Videoin
Hor. Flybackin
outB
outA
(no ident.)
(ident.)A: Statictests Functionaltests FunctionaltestsA: DCorpulseswidth Sensitivity control DigitalAFCperfect tuning
4433-05.EPS
TEST CIRCUIT
APPLICATION INFORMA TION
(referto theblock diagram) Signal Identification Circuit
The circuit recognizesonly TV signalsby checking
logically during one line the coincidence between
the horizontalflyback pulse and the pulse detecteda sync. separator.
The signal identificationis carried outby charging
the capacitor connectedto pin5; when the capaci-
tor voltage overcomesa fixedthreshold voltage,a
Schmitttrigger switches andenablesthe AFC con-
trol.Ifa TV signalis recognized, the capacitoris
slightly charged every line andits voltage reaches
the thresholdafter anumberof linewhichis defined the valueof the capacitor itself. The sensitivity the identification circuit, hence the numberof
lines requiredto charge the capacitor, canbe ad-
justedby meansofthe resistor connected between
pin11 and ground.
When the identification has been made,a signal
(levelL)is availableat pin 10.
Threshold Circuit
The circuit detects3 rangesof AFC voltage andin
combination with the TV signal identification circuit
drives the electronic switches.
Witha correct TV signal, the output levels corre-
(V2)(V6)–δf High Level Low Level Low Level Low Level+δf Low Level High Level
The TDA4433 has two separate outputs which can
have only two states, high (H)or low (L). The
outputsat pin2 andat pin6 remainata low level
withno video signal inputor witha video signalnot
identifiedasa true TV signal. Both pin2 and pin6
are open collector outputs and mustbe pulled-up the positive supply voltageby external resistors.
Voltage Regulator
The circuit can deliver1 mAandit can be usedas
D/A converter referenceto supply fine tuning volt-
age.
TDA4433 μP
M206μP interface
With microprocessor
EPM SYSTEM CONFIGURATIONS
TDA4433
8 ePM-DIP14.EPS
PACKAGE MECHANICAL DATA PINS- PLASTICDIP
Information furnishedis believedtobe accurate andreliable.However, SGS-THOMSON Microelectronics assumes noresponsibility
forthe consequencesof useof such information norfor any infringement ofpatents orotherrightsof third partieswhich mayresult
from itsuse.No licence isgrantedby implication orotherwise under anypatentor patent rightsof SGS-THOMSONMicroelectronics.
Specifications mentionedin this publicationare subjectto change without notice. This publication supersedes and replacesall
information previously supplied. SGS-THOMSON Microelectronics productsarenot authorizedforuseas criticalcomponentsinlife
support devicesor systems withoutexpress written approvalof SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics-All Rights Reserved
PurchaseofI2C Componentsof SGS-THOMSON Microelectronics, conveysa license underthe Philips2C Patent.Rights touse these componentsinaI2C system, isgranted provided thatthe system conformsto
theI2C Standard Specificationsas definedby Philips.
SGS-THOMSON Microelectronics GROUP OFCOMPANIES
Dimensions Millimeters Inches
Min. Typ. Max. Min. Typ. Max. 0.51 0.020 1.39 1.65 0.055 0.065 0.5 0.020 0.25 0.010 20 0.787 8.5 0.335 2.54 0.100 15.24 0.600 7.1 0.280 5.1 0.201 3.3 0.130 1.27 2.54 0.050 0.100
DIP14.TBL
TDA4433
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