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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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NJM2597 датащи(PDF) 7 Page - New Japan Radio |
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NJM2597 датащи(HTML) 7 Page - New Japan Radio |
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7 / 16 page  NJM2590/97 Ver.2004-08-25 -7- TERMINAL FUNCTION (Ta=25°C, V +=1.8V) Pin No. SYMBOL EQUIVARENT CIRCUIT VOLTAGE FUNCTION 1 IF IN 1.75V IF Amplifier Input. Typical input impedance is 2kΩ. Built in ESD protective circuit. 3 DEC 1.75V IF Decoupling. Connected with an external decoupling capacitor. Built-in ESD protective circuit 2 GND -- Ground. 4 FSK REF 0.9V FSK Reference Input. This is a reference input of wave shaping comparator. Connected with an external capacitor. A quick charge/discharge circuit offers the voltage of pin 4 comes the same voltage of pin 8 quickly. Built-in ESD protective circuit. 5 QUAD IN 0.5V Quadrature Detector Input. Connected with a ceramic discriminator. Built-in ESD protective circuit. 6 AF OUT 0.2V FM demodulated signal output. Built-in ESD protective circuit. 3 1 V+ 5 V+ 6 V+ 4 V+ |
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