поискавой системы для электроныых деталей |
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LA75520K датащи(PDF) 5 Page - Sanyo Semicon Device |
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LA75520K датащи(HTML) 5 Page - Sanyo Semicon Device |
5 / 12 page LA75520K No.A0648-5/12 System changeover a. SIF system SW The SIF system can be changed over by setting A (pin 7) and B (pin 9) to GND and OPEN respectively. A B BG I DK MN FM DET LEVEL De-emphasis GND GND O 6dB 75 μs GND OPEN O 0dB 50 μs OPEN GND O 0dB 50 μs OPEN OPEN O 0dB 50 μs Note : Circles mean that the system indicated with a circle is selected b. IF system SW The IF frequency becomes 38.9MHz when pin 10 is open. The IF frequency becomes 38.0MHz when pin 10 is set to GND. The IF frequency becomes 39.5MHz when pin 10 is set to VCC. c. Split/inter carrier SW Inter-carrier is selected by setting the 1st SIF input (pin 13) to GND. d. Reference frequency changeover SW The reference frequency becomes 4.43MHz when pin 11 is OPEN. The reference frequency becomes 4.0MHz when 270k Ω is connected between pin 11 and GND. e. AFT mute level, trap point shift SW By changing the pin 15 voltage, the potential and TRAP point at which AFT is muted can be set to either just or shift (about +220kHz). Pin 15 potential AFT mute potential TRAP point shift VCC to 4V MIDDLE (VCC/2) Just 4V to 2.5V MIDDLE (VCC/2) Shift 2.5V to 1V HI (VCC) Just 1V to GND HI (VCC) Shift * VCC=5V f. FM detector function not used To stop FM detection VCO without using the SIF circuit, short-circuit pin 1 – GND with resistance of 1k Ω or less. |
Аналогичный номер детали - LA75520K |
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Аналогичное описание - LA75520K |
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