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LA75503V датащи(PDF) 4 Page - Sanyo Semicon Device |
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LA75503V датащи(HTML) 4 Page - Sanyo Semicon Device |
4 / 15 page System Switching No. 6804-4/15 LA75503V • SIF system switch The SIF system is switched by setting pins A (pin 13) and B (pin 14) to GND or OPEN. A B B/G I D/K M/N FM DET LEVEL De-emphasis GND GND O 6 dB 75 µs GND OPEN O 0 dB 50 µs OPEN GND O 0 dB 50 µs OPEN OPEN O 0 dB 50 µs Note: "O" indicates that the system is selected. • IF system switch 38.9 MHz is selected as the IF frequency by leaving pin 15 (crystal oscillation) open. 38 MHz is selected by adding 220 k Ω between pin 15 and GND. This device can also select 39.5 MHz operation by adding a 220 kΩ resistor between pin 15 and VCC. • Split/inter carrier switch Inter carrier is selected by setting the first SIF input (pin 20) to GND. Sound Trap The trapping point of the sound trap is set approximately 250 kHz above the SIF center frequency of each mode to improve the video S/N. Therefore, design using split specifications is preferable. Pin Assignment 25 2 1 SIF INPUT FM FILTER NC 1st SIF OUT NC VIDEO DET OUT EQ FILTER SIF AGC FILTER APC FILTER FLL FILTER VCO COIL VCO COIL SYSTEM SW [A] SYSTEM SW [B] REF OSC FM DET OUT FM NOISE FILTER RF AGC VR SIF PLL FILTER NC FILTER CONTROL CAPACITOR VIF INPUT VIF INPUT GND VCC 1st SIF INPUT NC IF AGC FILTER RF AGC OUT AFT OUT 3 4 5 6 7 8 9 22 23 24 26 27 28 29 30 LA75503V 10 11 12 19 20 21 13 14 15 16 17 18 Top view |
Аналогичный номер детали - LA75503V |
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Аналогичное описание - LA75503V |
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