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MC13028A bảng dữ liệu(PDF) 6 Page - Motorola, Inc |
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MC13028A bảng dữ liệu(HTML) 6 Page - Motorola, Inc |
6 / 20 page MC13028A 6 MOTOROLA ANALOG IC DEVICE DATA PIN FUNCTION DESCRIPTION Description/External Circuit Requirements Internal Equivalent Circuit Symbol Pin 14 LOOPFilter 10 k VCC 390 Fast Lock Low VCC 14 VCC Fast Lock High Idrive Idrive Loop Filter A capacitor which forms the loop filter is connected from Pin 14 to ground. The recommended value is 47 µF in series with 47 Ω. This capacitor should be of good construction quality so it will have a very low specification for leakage current in order to prevent stereo distortion. The 47 Ω resistor in series with the capacitor controls the PLL corner frequency response, keeping the response shape critically damped and not peaked up. The dc level at Pin 14 is approximately 0.6 Vdc in the locked condition. 15 LEFTout VCC 15 VCC 1.0 k Left Channel Audio Output This is the left channel audio output pin from which the IC can provide 1.3 µApp drive current for each percent of mono modulation. A resistor to ground sets the level of the audio output. For example, 100% (mono mod) x 1.3 µApp (IC drive per % mod) = 130 µApp flowing through the load resistor. (For a 2.2 k load, 286 mVpp is then the output signal voltage.) When dealing with stereo signals, multiply the mod level by 2; i.e. 50% (left only mod) x 2 (stereo factor) x 1.3 µApp (IC drive per % mod) = 130 µApp flowing through the load resistor. 16 RIGHTout VCC 16 VCC 1.0 k Right Channel Audio Output This is the right channel audio output pin. A resistor to ground sets the level of the audio output. See the explanation under the Left Channel Audio Output description above. |
Số phần tương tự - MC13028A |
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Mô tả tương tự - MC13028A |
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