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ULA1145G-N20-R Scheda tecnica(PDF) 4 Page - Unisonic Technologies |
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ULA1145G-N20-R Scheda tecnica(HTML) 4 Page - Unisonic Technologies |
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4 / 10 page ![]() ULA1145 Preliminary CMOS IC UNISONICTECHNOLOGIESCO.,LTD 4 of 10 www.unisonic.com.tw QW-R106-006.a PIN FUNCTIONS(Cont.) PIN NO. Function Internal Equivalent Circuit Notes 10 IF output Output to the phase circuit 11 IF input IF input via the phase shift circuit. The mute circuit malfunctions and demodulation output decreases if the voltage level at this pin drops below 180mV. 12 Vref 4.8V 13 VCC Supply voltage 7.5~14V 14 IF buffer output 15 GND 16 Mute driver Amount of mute attenuation depends on and is controlled by the voltage at this pin. 17 S-meter output PNP open collector output 18 SD sensitivity setting Can be used for S-meter output 19 SD output High active |
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