U4479B TEMIC [TEMIC Semiconductors], U4479B Datasheet
U4479B
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U4479B Summary of contents
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... DVB-Cable IF Converter and Full Multi-Standard Video-/Sound IF Processing Description The U4479B is a bipolar circuit for the processing of cable DVB IF (Digital Video Broadcasting) and multi- standard analog TV IF signals. The combi circuit processes QAM modulated IF signals, all TV video IF Features supply voltage; low power consumption D DVB signal processing with a converter for the 2nd IF ...
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... U4479B Block Diagram Ref 7 (DVB) 12 Tuner Tuner AGC 11 1 SIF 2 24 Band V S Gap 3 2 (11) Preliminary Information AFC Loop filter AFC FPLL VCO AGC: QAM neg./pos. SIF AGC 4 8 Figure 1. Block diagram ...
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... P tot I out stg V ESD W resistor U4479B Function SIF input (symmetrical) Internal reference voltage (BG) SIF-AGC (time constant) IF1 input (symmetrical) IF-AGC (time constant) Ground IF2 input (symmetrical) Take over point, tuner AGC Tuner AGC output current CVBS or 2nd IF output Capacitor – black level detector ...
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... U4479B Operating Range Parameters Supply voltage range Ambient temperature Thermal Resistance Parameters Junction ambient (when soldered to PCB) Electrical Characteristics + amb Parameters Test Conditions / Pins DC supply Supply voltage Supply current Video IF- and DVB IF inputs Input sensitivity, RMS value Input impedance ...
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... I out 2 R out v o,vid 1.6 1 o,vid V sync res1 U4479B Typ. Max. Unit MHz MHz –0.3 % 100 mV 4 100 1.8 2.0 V 2.0 2 2.2 V 1.2 V 3 %/V MHz 2 ...
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... U4479B Electrical Characteristics (continued + amb Parameters Test Conditions / Pins AFC output Control slope Frequency drift by Related to the picture temperature carrier frequency Output voltage upper limit lower limit Output current SIF input Input sensitivity, Output signal: –3 dB RMS value ...
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... Pin 15 ‘high’ DVB BG 43 MHz 38.9 MHz 38.9 MHz ‘high’ ‘high’ ‘low’ ‘high’ –6 dB – 33.4 MHz 33.16 MHz kHz 54 mod in U4479B Typ. Max. Unit 3 3 700 (Pins 9, 10) Pin 15 ‘low’ L L’ ...
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... U4479B Basic Application Circuit 8 (11) Preliminary Information Figure 3. Basic application circuit TELEFUNKEN Semiconductors Rev. A2, 14-Jan-98 ...
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... V ) 490 nH 4.7 k 560 Note: With external LO operation, Pin 18 (VCO tuning voltage) should be connected to the supply voltage, and Pin 20 (LO output) should not be connected to the PCB. U4479B +5 V S852T to Pin 7 100 nF 14581 Figure (better S852T 1 nF ...
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... U4479B Package Information Package SO28 Dimensions in mm 18.05 17.80 0.4 1.27 16. (11) Preliminary Information 9.15 8.65 7.5 7.3 2.35 0.25 0.10 10.50 10.20 15 technical drawings according to DIN specifications 14 TELEFUNKEN Semiconductors Rev. A2, 14-Jan-98 0.25 13033 ...
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... TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone 7131 67 2831, Fax number 7131 67 2423 TELEFUNKEN Semiconductors Rev. A2, 14-Jan-98 Preliminary Information unauthorized use. U4479B 11 (11) ...