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LA1845NV Datasheet(PDF) 5 Page - Sanyo Semicon Device |
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LA1845NV Datasheet(HTML) 5 Page - Sanyo Semicon Device |
5 / 10 page LA1845NV No.7931-5/10 Continued from preceding page. Pin No. Pin function Pin voltage Equivalent circuit Notes 19 AM detector output 0V (FM) 1.5V (AM) Output impedance ro = 3.3kΩ 20 S meter, AM AGC 0.2V (FM) 0.9V (AM) The resistance of the built-in resistor R is 13.9k Ω. The SD response during seek operation is determined with the external capacitor connected to this pin. 21 AM RF input Vreg Must be used at the same potential as pin 22. 22 AFC Vreg The FM SD bandwidth can be adjusted with the external resistor connected between this pin and pin 3 (Vreg). 23 OSC VCC Connect the oscillator coil between this pin and pin 9 (VCC). Note : Impedance of the secondary oscillator coil must be 5k Ω or higher. 24 Oscillator buffer output, FM SD sensitivity adjustment VCC-1.4 The FM SD sensitivity can be adjusted with an external resistor connected to this pin. Output impedance R = 200 Ω Note : Resistance of the external resistor connected to the pin 24 must be 3.3k Ω or higher. 23 R 24 20 R 19 21 22 |
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