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UPC2775GS Datasheet(PDF) 3 Page - NEC |
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UPC2775GS Datasheet(HTML) 3 Page - NEC |
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3 / 16 page  µPC2775GR/GS 3 Data Sheet P10194EJ3V0DS00 PIN EXPLANATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Pin No. 1 2 3 4 5 6 7 8 9 10 Symbol UOSC collector (Tr. 1) UOSC base (Tr. 2) UOSC base (Tr. 1) UOSC collector (Tr. 2) UB OSC output GND VOSC base (Tr. 1) VOSC base (Tr. 2) VOSC collector (Tr. 1) Equivalent circuit Function and Explanation Collector pin of UHF oscillator. Assemble LC resonator with 2 pin through capacitor ~ 1 pF to oscillate with active feedback Loop. Base pin of UHF oscillator with balance amplifier. Connected to LC resonator through feedback capacitor ~ 300 pF. Base pin of UHF oscillator with balance amplifier. Connected to LC resonator through feedback capacitor ~ 300 pF. Collector pin of UHF oscillator with balance amplifier. Assemble LC resonator with 3 pin through capacitor ~ 1 pF to oscillate with active feedback Loop. Double balanced oscillator with transistor 1 and transistor 2. Switching pin for VHF or UHF operation. UHF operation = 9.0 V VHF operation = GND UHF and VHF oscillator output pin. In case of F/S tuner application, connected PLL synthesizer IC’s input pin. VHF and UHF oscillators’ GND pin. Base pin of VHF oscillator with balance amplifier. Grounded through capacitor ~ 10 pF. Base pin of VHF oscillator with balance amplifier. Assemble LC resonator with 10 pin to oscillate with active feedback Loop. Base pin of VHF oscillator with balance amplifier. Connected to LC resonator through feedback capacitor ~ 3 pF. Pin voltage TYP. above: V mode (V) below: U mode (U) 6.90 6.25 6.00 3.90 6.00 3.90 6.90 6.25 0.0 9.0 5.40 5.40 0.0 0.0 3.50 5.90 3.50 5.90 6.20 6.90 2 4 1 3 5 REG. 6 From OSC 9 10 8 REG. |
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