OM8361 pin function

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The following is the circuit diagram of [OM8361 pin function]:

Pin Function Table (Voltage in V):

  • 1 - 3.2: Audio de-emphasis
  • 2 - 6: IF detection tuning loop
  • 3 - 6: IF detection tuning loop
  • 4 - 7: Video recognition output IDENT
  • 5 - 7.5: Sound IF input and volume control
  • 6 - 3.6: External audio input
  • 7 - 3.2: Image IF output
  • 8 - 2.8: Power supply decoupling loop
  • 9 - 0: Ground
  • 10 - 8: Power supply
  • 11 - 0: Ground
  • 12 - 3.4: Filter Tuning Decoupling Circuit
  • 13 - 3.6: Internal video signal input
  • 14 - 2.2: Sharpness Control
  • 15 - 3.6: External video signal input
  • 16 - 8/4: Chroma and Audio Video Switch Input
  • 17 - 0.1～2.4: Brightness control input
  • 18 - 2.4: Blue color output
  • 19 - 2.4: Green base color output
  • 20 - 2.4: Red base color output
  • 21 - 0.2: Blanking switch
  • 22 - 2.6: Red signal input
  • 23 - 2.6: Green signal input
  • 24 - 2.6: Blue signal input
  • 25 - 0.1~2: Contrast control input
  • 26 - 0.7～2.3: Color saturation control input
  • 27 - 2.3~4.6: Tone Control Input or Chroma Output
  • 28 - 3.6: BY signal input
  • 29 - 3.6: RY signal input
  • 30 - 1.6: RY signal output
  • 31 - 1.6: BY signal output
  • 32 - 1.6: 4.43MHz output and SECAM identification
  • 33 - 3.8: Filter loop synchronous phase detection
  • 34 - 2.6: Connecting a 3.58MHz crystal
  • 35 - 2.6: Connecting 4.43MHz crystal oscillator
  • 36 - 8.2: Line start power supply
  • 37 - 1.0: Line excitation output
  • 38 - 0.4: Line reverse input and sandcast pulse output
  • 39 - 2.6: Second Phase Filtering Circuit
  • 40 - 2.6: First Phase Filtering Circuit
  • 41 - 2.4: Field retrace input
  • 42 - 2.4: Field start-up
  • 43 - 2.1: Field excitation output
  • 44 - 3.2: AFC output
  • 45 - 4.2: IF input
  • 46 - 4.2: IF input
  • 47 - 3.2: High frequency AGC output
  • 48 - 3.4: AGC Decoupling Capacitor
  • 49 - 0.2: High frequency AGC control adjustment
  • 50 - 3.6: Audio output
  • 51 - 4.4: Sound Demodulation Decoupling
  • 52 - 6.6: Clearance power supply decoupling
(Editor: Circuit Diagram) --- This version has been rewritten for clarity and natural flow, while maintaining all original technical information.

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