전자부품 데이터시트 검색엔진 |
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LA1838 데이터시트(PDF) 4 Page - Sanyo Semicon Device |
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LA1838 데이터시트(HTML) 4 Page - Sanyo Semicon Device |
4 / 9 page Pin No. Pin function Pin voltage Notes Equivalent circuit Vreg – 1.4 VCC Vreg Coil Specifications • AM oscillator (for the DUT) HW-50425 (Mitsumi) Pin Functions • IFT YD-1073-1 (Mitsumi) No. 5888-4/9 LA1838 3 1 2 4 6 A10633 - 2T - 9T - x 86T QO ≥ 80 L = 270 µH 3 1 2 4 S S 6 YD-1073 SFU450B A10634 - x 58T - 7T - 94T fO = 450 kHz QO = 110 A 180-pF capacitor is built in With an external SFU450B FM IF input AM mixer output 1 2 Input impedance ri = 330 Ω Connect the mixer coil between this pin and VCC 1 3 A10635 2 A10636 1 3 A10635 Vreg FM IF input bypass 3 Also used for the MPX regulator filter 4 A10637 Vreg 0 V AM IF input GND 4 5 Input impedance ri = 2 kΩ 6 7 A10638 VCC VCC TU-LED ST-LED, AF-IF output 6 7 Active low Open collector AM stereo IF output (pin 7) The influx current must be held under 150 µA. A10639 9 28 VCC FM detector 9 The CDA10.7 MG74 (Murata Mfg. Co., Ltd.) is recommended as the ceramic discriminator. A device with a series resistance of 270 Ω must be used. VCC 8 Continued on next page. |
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