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STV9211 数据表(PDF) 30 Page - STMicroelectronics |
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STV9211 数据表(HTML) 30 Page - STMicroelectronics |
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30 / 37 page ![]() STV9211 + STV9556/55/53 applications hints STV9211 30/37 Step 3 Adjustment of the InfraBlack level register IBL (Register 10, 11, 12. See I²C table 1). These three 8 bit- registers adjust separately the infra-black level of the 3 outputs with a high resolution (100mV at 26V range or 140mV at 36V range). Figure 16: STV9211 and STV95xx - Cut-off adjustment IBR 0 1.8V DVib-P GND 1 Vib-P Vib-P (@IBR=1) IBL 0 255 2,22 0.92 0.66 0.40 1.3V IB0= 000 IB0= 001 IB0= 010 IB0= 111 VDD Vib-A OUT Amplifier STV95xx * G=20 * Vref=5.6V PreAmplifier STV9211 IN DVib-A 1.3V 36V 26V IBO 000 0.40V Vib-P 001 Vib-A 0.66V 110V 105V 010 --- 111 0.92V 100V 2.22V 75V --- --- Vib-A (@IBR=1) IBL 0 255 110V 105V 100V 75V 26V IB0=000 IB0=001 IB0=010 IB0=111 Vib-P (@IBO=000) IBL 0 255 2,20 1.70 0.40 1.3V IBR= 1 1.8V IBR= 0 Vib-A (@IBO=000) IBL 110V 84V 74V 26V IBR= 1 36V IBR =0 0 255 InfraBlack Range: IBR InfraBlack Offset: IBO Black InfraBlack Black InfraBlack |
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