전자부품 데이터시트 검색엔진 |
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MC13028A 데이터시트(PDF) 3 Page - Motorola, Inc |
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MC13028A 데이터시트(HTML) 3 Page - Motorola, Inc |
3 / 20 page MC13028A 3 MOTOROLA ANALOG IC DEVICE DATA Standard Test Circuit IF Amp Pilot Tone Detector Reg Signal Quality Detector AM Stereo Decoder AGC Left Right L Audio Output R 10 k 2.2 k Loop 3.6 MHz VCC 2.2 k 9 10 11 12 13 14 15 16 4 3 2 1 + 10 µF Blend LED Pilot Ind Gnd 0.01 µF IFin 0.47 µF 10 µF R1 VCC 10 µF 10 µF 0.47 µF 0.22 µF 47 µF 2.2 k 10 k 47 µF 47 43 pF + 8 7 6 5 + + + + + RO RO + + PIN FUNCTION DESCRIPTION Pin Symbol Internal Equivalent Circuit Description/External Circuit Requirements 1 STA VCC 1 2.4 k Stereo Threshold Adjustment Pin The function of this circuit is to provide the freedom to achieve a desired value of incoming IF signal level which will cause full stereo operation of the decoder. The level can be determined by the value of R1, a resistor from Pin 1 that can be connected to either VCC or to ground. This resistor may also be omitted in some designs (Pin 1 left open). The approximate dc level with the pin left open is 0.6 Vdc. 2 AGCcap 2 AGC Filter Bypass Capacitor An electrolytic capacitor is used as a bypass filter and it sets the time constant for the AGC circuit action. The recommended capacitor value is 10 µF from Pin 2 to ground. The dc level at this pin varies as shown in the curve in Figure 13, AGC Voltage versus Input Level. 3 IFFBcap VCC 3 2.0 k IF Amplifier Feedback Capacitor A capacitor which is specified to have a low ESR at 450 kHz is normally used at Pin 3. The value recommended for this capacitor is 0.47 µF from Pin 3 to ground. This component forms a low pass filter which has a corner frequency around 30 kHz. |
유사한 부품 번호 - MC13028A |
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유사한 설명 - MC13028A |
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