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| TDA4443 MULTISTANDARD VIDEO IF AMPLIFIER . . . . . . . . . . . . . SWITCHING OFF THE IF AMPLIFIER WHEN OPERATING IN VTR MODE DEMODULATION OF NEGATIVE OR POSITIVE IF SIGNALS. THE OUTPUT REMAINS ON THE SAME POLARITY IN EVERY CASE IF AGC AUTOMATICALLY ADJUSTED TO THE ACTUAL STANDARD TWO AGC POSSIBILITIES FOR B/G MODE : 1. GATED AGC 2. UNGATED AGC ON SYNC. LEVEL AND CONTROLLED DISCHARGE DEPENDENT ON THE AVERAGE SIGNAL LEVEL FOR VTR AND PERI TV APPLICATIONS FOR STANDARD L : FAST AGC ON PEAK WHITE BY CONTROLLED DISCHARGE POSITIVE OR NEGATIVE GATING PULSE EXTREMELY HIGH INPUT SENSITIVITY LOW DIFFERENTIAL DISTORTION CONSTANT INPUT IMPEDANCE VERY HIGH SUPPLY VOLTAGE REJECTION FEW EXTERNAL COMPONENTS LOW IMPEDANCE VIDEO OUTPUT SMALL TOLERANCES OF THE FIXED VIDEO SIGNAL AMPLITUDE ADJUSTABLE, DELAYED AGC FOR PNP TUNERS DESCRIPTION The TDA4443 is a Video IF amplifier with standard switch for multistandard colour or monochrome TV sets, and VTR's. DIP16 (Plastic Package) ORDER CODE : TDA4443 PIN CONNECTIONS IF INPUT STANDARD SWITCHING GROUND IF AGC TIME CONSTANT DELAYED TUNER AGC OUTPUT TUNER AGC ADJUST GATING PULSE INPUT REFERENCE LC NETWORK 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 IF INPUT GROUND NOT TO BE CONNECTED SUPPLY VOLTAGE V CC NOT TO BE CONNECTED VIDEO SIGNAL OUTPUT DISCHARGE TIME CONSTANT REFERENCE LC NETWORK 4443-01.EPS December 1992 1/7 TDA4443 BLOCK DIAGRAM VIDEO OUTPUT 11 10 TDA4443 WIDE BAND AMPLIFIER IF INPUT IF INPUT 16 1 VIDEO DEMODULATOR IW 9 8 CONTROL AMPLIFIER 3 15 TUNER CONTROL STANDARD SWITCH VS 2 4 5 6 TUNER AGC ADJUST 13 SUPPLY UNIT GATING AMPLIFIER 7 GATING PULSE TUNER AGC OUTPUT VCC GENERAL DESCRIPTION This video IF processing circuit integrates the following functional blocks : Three symmetrical, very stable, gain controlled wideband amplifier stages - without feedback by a quasi-galvanic coupling. Demodulator controlled by the picture carrier Video output amplifier with high supply voltage . . . . . . . . . rejection Polarity switch for the video output signal AGC on peak white level Gated AGC Discharge control Delayed tuner AGC At VTR Reading mode the video output signal is at ultra white level 2/7 4443-02.EPS TDA4443 ABSOLUTE MAXIMUM RATINGS Symbol VCC V0 Vext I4 I2 I0 I0 Ptot Tj TAMB Tstg Supply Voltage RangePin 13 Open Loop Voltage External Voltage Pin 5 Pin 4 Pin 4 Pin 2 Pin 11 Pin 11 Parameter Value 15 max. VCC 12 0.3 0.5 5 30 1 125 0 to +70 -25 to +125 Unit V V V mA mA mA mA W o o o Control Current for VTR Mode Max. Video Output Current Short Circuit Current (t 1sec) Power Dissipation Junction Temperature Ambient Temperature Range Storage Temperature Range Control Current for Standard Mode C C THERMAL DATA Symbol R th (j-a) Parameter Junction-ambient Thermal Resistance Value 70 Unit o C/W ELECTRICAL OPERATING CHARACTERISTICS TAMB = 25oC, VCC = 12V, unless otherwise spacified. Test Circuit Page 5. Symbol VCC ICC V11 VAA VO VO Supply Voltage Supply Current (VCC = 12V, V4 = 3.5V, V IN = 0) Pin 6, PIn 7, PIn 2 open Ultra White Level at Standard B/G VCC = 15V, V4 = 3.5V Ultra Black Clamping Level at Standard B/G SIGNAL 1 Picture to sync. output voltage of the video signal without load in standard B/G (residual carrier 10%) SIGNAL 1 Picture to blanking level output voltage of the video signal without load in standard L (blanking level at 28%of carrier amplitude) SIGNAL 2 (residual carrier 5%) Parameter Pin Min. 13 13 11 11 11 11 4.8 1.70 2.6 1.80 10 Typ. Max. 12 55 5.1 1.85 2.9 2.1 15 75 5.6 2.10 3.3 2.40 Unit V mA V V VPP VPP ( Vp - Vblank ) Output voltage change of the picture to blanking level from standard L to standard B/G (mode BG : signal 1, mode L : signal 2) Vp - Vblank Vblack Vwhite Vvideo Bvideo Vvideo IO I7 V7 V1 I Supply voltage influence on the ultra black level in standard B/G Supply voltage influence on the ultra white level in standard B/G Video Bandwidth Video Signal Attenuation with VIN at 4.43MHz Video Bandwidth at -3dB Video frequency response changes witin the AGC range DC Output Current (V11 = 10V, VCC = 15V) Gating Pulse Current DC Voltage at Gating Input Input Voltage Sensitivity VIN (with VOUT = VO - 3dB) Standard B/G SIGNAL 1 Control Current for Status B (see status of mode switching) V2 = 5V 11 11 11 11 11 11 11 7 7 116 2 0.30 1.3 120 10 6 0.5 1.5 0.5 1 1 10 % %V %V 1.5 dB MHz 2.0 2 1.0 1.6 dB mA mA V VRMS 4443-03.TBL 40 A 3/7 4443-02.TBL 4443-01.TBL C TDA4443 ELECTRICAL OPERATING CHARACTERISTICS (continued) TAMB = 25oC, VCC = 12V, unless otherwise spacified. Test Circuit Page 5. Symbol I GIF IAGC AGC VIF V2IF d aM Sync IF AGC Range Available Tuner AGC Current (10dB above the AGC starting point) Delay Between Tuner AGC and IF AGC (pin 6 not connected) IF residual carrier at the video o/p withing the AGC range 38.9MHz 77.8MHz Differential Distortion on Composite VIdeo Signal Amplitude SIGNAL 3 Attenuation of sound to color carrier intermodulation signal (1.07MHz) referred to the demodulated color carrier : PIcture Carrier = 0dB, Color Carrier = -6dB, Sound Carrier = -24dB Sync. Pulse Compression within the IF AGC Range Input Impedance : Resistance Capacitance Switch off Control Voltage for VTR Mode Switch off Current for VTR Mode 1-16 1-16 4 4 9 5 5 11 11 11 11 50 8 Parameter Control Current Status C (see status of mode switching) - V2 = 6.3V Pin 2 Min. Typ. Max. 60 60 12 50 20 50 5 400 Unit A dB mA dB mVRMS mVRMS % dB 3 2.5 2 10 150 % k pF V A Sync RI CI V I 4443-04.TBL 4443-03.EPS / 4443-04.EPS SIGNAL 1 (standard B/G) Demodulated Signal 1000mV IF Signal 100% 300mV 100% 10% 0mV 4/7 TDA4443 SIGNAL 2 (standard L) Demodulated Signal 1000mV IF Signal 5% 100% 100% 4443-05.EPS / 4443-06.EPS 300mV 0mV SIGNAL 3 Demodulated Signal 4.43MHz 900mV 200mV 500mV 200mV 300mV 4.43MHz 0mV TEST CIRCUIT SUPPLY VOLTAGE V CC 22F VIDEO OUTPUT 10nF 47nF Attenuateur 16 15 22nF N.C. 14 13 N.C. 12 11 10 68nF 9 Modulator TDA4443 22nF 22nF 1 2 3 4 5 6 7 8 33pF 0.5H Video Generator 200k 2.2F 20k 2.5k 5k MODE SWITCHING 5/7 4443-08.EPS V4 I5 GATING 4443-07.EPS TDA4443 DEFINITION OF MODE SWITCHING Status A B C Pin 2 Not connected 12V HIgh Impedance 12V Low Impedance No specifications Pin 4 No External Voltage No External Voltage No External Voltage 7.5V Function Standard B/G mode, gated charge and discharge. Standard B/G, ungated, charging up to sync. level, discharging dependant from average signal (peri operation). At standard L ungated, charging up to peak white level, discharge dependant from average signal level, inverted polarity of the video output. In VTR reading mode the IF amplifier is blocked, turned gain controlled down : the video output signal is fixed at constant ultra white level for standard B/G mode. D The gating pulse at Pin 7 is internally switched off. STATUS OF MODE SWITCHING, REFERRING TO CONTROL VOLTAGE PIN 2 Control Voltage Pin 2 1.2 to 2.5V* 3.0 to 5.0V > 6.5V 0.0 to 0.8V Connections of Pin 2 Open High Impedance Low Impedance Ground Status A B C D Standard Standard Standard Standard Function B/G gated sync. operation B/G, no sync., operation L L * Voltage measured on Pin 2. STATUS D A B 5.0 6.5 C V2 0.8 2.5 1.2 3.0 I2 (nA) 3 +12V I2 TDA4443 V2 2 1 0 V2 (V) 0 4 8 12 4443-09.EPS 6/7 4443-06.TBL 4443-05.TBL TDA4443 PACKAGE MECHANICAL DATA 16 PINS - PLASTIC DIP a1 I b Z B e3 e L b1 E D 16 9 F 1 8 Dimensions a1 B b b1 D E e e3 F i L Z Min. 0.51 0.77 Millimeters Typ. Max. 1.65 Min. 0.020 0.030 Inches Typ. Max. 0.065 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 0.020 0.010 0.787 0.335 0.100 0.700 0.280 0.201 0.130 0.050 DIP16.TBL Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 7/7 PM-DIP16.EPS |
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