tda4455 ATMEL Corporation, tda4455 Datasheet
tda4455
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tda4455 Summary of contents
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... Standard B/G: AGC acting on the sync peak pulse Package Options Case: 18-pin DIL plastic Rev. A1: 08.05.1995 Preliminary Information TDA4455 are always available with the same polarity at the demo- dulator output. The demodulated video signal is filtered, amplified and fed via an interference limiter to the video output (Pin 7). ...
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... TDA4455 Block Diagram Input selector Loop filter switch 16 13 Video Lock detector 17 IF Input Input Tuner AGC 3 Tuner AGC take over Pin Description Pin Symbol Function input 1 3 Tuner AGC adjustment (turn over point) 4 Delayed tuner AGC current ...
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... min ( min ( min ( min ( min ( TDA4455 Value Unit 6 5.0 mA 720 mW +125 C –25 to +85 C –25 to +125 C Value Unit 60 K/W 3 (12) ...
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... TDA4455 Electrical Characteristics reference point Pin 5, unless otherwise specified amb Parameters Test Conditions / Pins DC-supply Supply voltage Supply current IF-amplifier Pins 1–2 or Pins 17–18 Input sensitivity sync peak value, B/G Input impedance Input capacitance IF-AGC IF gain control range Response time, standard L ...
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... Apply a 38.9 MHz unmodulated carrier signal to the IF input (Pins 1–2 or Pins 17–18); adjust the input level so that the AGC voltage at Pin 6 is between 2.0 V and 2 Adjust the VCO circuit until at Pin 12 is the same DC- voltage as measured in step 2. TDA4455 Typ. Max. Unit 2 mV ...
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... TDA4455 Pin Related Internal Circuits (Continued 7675 93 7676 Figure 2. Pin 3 93 7677 4 Figure 3. Pin 4 6 (12) Preliminary Information TELEFUNKEN Semiconductors W 1 Figure 1. Pin 1–2, Pin 17–18 93 7678 Figure 4. Pin 6 Figure 5. Pin 7879 ...
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... Pin Related Internal Circuits (Continued Figure 6. Pin Figure 7. Pin 9– 12.5 12.5 W 300 11 Figure 8. Pin 11 Rev. A1: 08.05.1995 Preliminary Information 7680 93 7681 93 7685 93 7682 TDA4455 2 7683 Figure 9. Pin 7684 Figure 10. Pin 13 16 Figure 11. Pin 16 7 (12) ...
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... TDA4455 IF-AGC, Switching Thresholds 93 7645 93 7646 93 7647 Dig.: Analog: Sound Chrominance +Sync. Diff.: Signal Figure 14. D2MAC-standard (neg. modulated) 8 (12) Preliminary Information TELEFUNKEN Semiconductors 4.2 V Ultra white level: zero carrier 4.0 V White level carrier 2.0 V Sync. peak level: 100% carrier (charge / discharge threshold) Figure 12. B/G-standard (neg. modulated) 4 ...
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... TELEFUNKEN Semiconductors Test Circuit Rev. A1: 08.05.1995 Preliminary Information TDA4455 9 (12) ...
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... TDA4455 Application Circuit 10 (12) Preliminary Information TELEFUNKEN Semiconductors Rev. A1: 08.05.1995 ...
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... TELEFUNKEN Semiconductors Dimensions in mm Package: DIP 16 Rev. A1: 08.05.1995 Preliminary Information TDA4455 94 9128 11 (12) ...
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... TDA4455 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 ...