tda4472-a ETC-unknow, tda4472-a Datasheet
tda4472-a
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tda4472-a Summary of contents
Page 1
... VIF-AGC with peak sync detection Package 28 pin shrink-dual-inline-plastic (SDIP28) Rev. A1: 26.07.1995 TDA4472-A The circuit processes TV video IF signals with negative modulation (e.g. B/G standard) and the FM/NICAM sound IF signals. Tuner AGC with adjustable take over point Alignment-free quasi parallel sound (QPS) mixer for ...
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... TDA4472-A Offset comp. (optional) 26 Ï FPL L VIF amp 6 Ï Ï VIF 7 Ï C AGC 8 Ï AGC Ï (VIF) 11 Tuner Ï Ï Tuner 10 AGC Ï Take over point 27 Ï Ï Ï 28 SIF 2 Ï 3 Input switch Ï Ï Ï 1 Ï Ï SIF 1 2 Ï ...
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... Video Demodulation and Amplifier The video IF signal, which is applied from the gain controlled IF amplifier, is multiplied with the inphase Rev. A1: 26.07.1995 TDA4472-A component of the VCO signal. The video demodulator is designed for low distortion and large bandwidth. The demodulator output signal passes an integrated low pass filter for attenuation of the residual vision carrier and is fed to the video amplifier ...
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... TDA4472-A Pin Description i,SIF1 i,SIF1 GND AGC i,VIF i,VIF AGC 9 20 GND top tun o,vid 8835 Figure 2. Pin configuration 4 (14) TELEFUNKEN Semiconductors Pin Symbol V i,SIF2 ...
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... Symbol Pin amb Symbol R thJA Symbol Min. Pin Pin 6 Pin AGC TDA4472-A Value Unit 9 675 +4.5 V +3.5 V +13 +125 C C 300 V Value Unit 4 +85 C Value Unit 55 K/W Typ ...
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... TDA4472-A Parameters Test Conditions / Pins Tuner-AGC Available tuner-AGC current Allowable output voltage IF slip-tuner AGC current I tun IF input signal for mini top mum take over point IF input signal for maxi top mum take over point Variation of the take over ...
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... B/G modulated VIF signal Black screen: Channel 1/2 Grid pattern: Channel 1/2 Grey screen 50%: Channel 1/2 Ripple rejection see note 1 /pin 23/pin24 SIF input selector switch Control voltage input 1 active see note 8 input 2 active Switching current Rev. A1: 26.07.1995 TDA4472-A Symbol Min. Typ -0.4 AFC S I 0.2 AFC Pin 19 V ...
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... TDA4472-A Notes 1. This parameter is given as an application information and not tested during production VCR mode the VIF- and SIF path is switched off. 3. Adjustment of turn over point (delayed tuner AGC) with external resistor R or external voltage V top possible. 4. The oscillator drift is related to the picture carrier fre- quency, at external temperature-compensated LC circuit ...
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... TELEFUNKEN Semiconductors * ) external L/C circuit (VCO 38.9 MHz) with TOKO coil 7KN (9 turns, Rev. A1: 26.07.1995 0.12 mm) Figure 4. Basic application circuit TDA4472-A 9 (14) ...
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... TDA4472-A Internal Pin Configuration 8521 Figure 5. Sound IF inputs (pin 1-2, 27-28) 3 8522 Figure 6. Input selector switch (pin 3) 5 Figure 7. SIF-AGC time constant (pin 5) 10 (14) TELEFUNKEN Semiconductors 4.2 V Figure 8. Video IF input (pin 6-7) 8 Figure 9. VIF-AGC time constant (pin 8) ...
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... Figure 11. Tuner AGC – output (pin 11 8528 Figure 12. Video output (pin 12) 17 3.5 V Figure 13. Internal reference voltage (pin 17) Rev. A1: 26.07.1995 18 Figure 14. Loop filter (pin 18 8533 Figure 15. AFC switch (pin 19 8534 94 8531 Figure 16. VCO (pin 20-21) TDA4472-A 2. 8532 3 (14) ...
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... TDA4472 8535 Figure 17. AFC output (pin 22) 100 8536 Figure 18. Intercarrier output (pin 24) 12 (14) TELEFUNKEN Semiconductors 3 8538 Figure 19. VCO offset compensation (pin 26) Rev. A1: 26.07.1995 ...
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... TELEFUNKEN Semiconductors Dimensions in mm Figure 20. 28 pin shrink-dual-in line-plastic (SDIP28) Rev. A1: 26.07.1995 TDA4472-A 95 10610 95 10610 13 (14) ...
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... TDA4472-A Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment ...