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LA1845N Datasheet(PDF) 5 Page - Sanyo Semicon Device |
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LA1845N Datasheet(HTML) 5 Page - Sanyo Semicon Device |
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5 / 9 page  LA1845N No.7185-5/9 Continued from preceding page. Pin No. Pin function Pin voltage (V) Pin description Equivalent circuit 11 Phase comparator low-pass filter (AM/FM switching) VCC-1.0 The device operates in AM mode when a current of over 200 μA flows from pin.12. Limit values for the resistor : 2.7k Ω (When VCC = 7V) 3.9k Ω (8V) 11 12 Pilot detector low-pass filter (Forced mono) (VCO stop) VCC-1.0 The device is forced to monaural when a current of over 50 μA flows from this pin. The VCO is stopped when a current of over 200 μA flows from this pin. The limit values for the resistor are the same as those for pin 11. 12 13 14 L outputs R outputs 3.2 3.2 Output impedance ro = 3.3kΩ 13 ( 14 ) 15 Pilot canceler output Vreg 15 3 16 Decoder input Vreg Inverting input pin RNF = 20k Ω RNF 16 17 PLL input Vreg Input impedance ri = 20kΩ 17 18 FM demodulator output Vreg + 0.7 Output impedance ro = 2.3kΩ The channel separation can be adjusted with an external capacitor connected between this pin and ground. 18 19 AM detector output 0 (FM) 1.5 (AM) Output impedance ro = 10kΩ 100V 19 20 S meter, AM AGC 0.2 (FM) 0.9 (AM) The resistance of the built-in resistor R is 13.9k Ω The SD responce during seek operation is determined with the external capacitor connected to this pin. 20 R 21 AM RF input Vreg Must be used at the same potential as pin 22. 21 22 AFC Vreg The FM SD bandwidth can be adjusted with the external resistor connected between this pin and pin 3 (Vreg). 22 Continued on next page. |
Similar Part No. - LA1845N_09 |
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Similar Description - LA1845N_09 |
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