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AD9789BBCZ bảng dữ liệu(PDF) 19 Page - Analog Devices |
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AD9789BBCZ bảng dữ liệu(HTML) 19 Page - Analog Devices |
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19 / 76 page ![]() AD9789 Rev. A | Page 19 of 76 CENTER 834.00MHz RES BW 30kHz VBW 300kHz SPAN 18MHz SWEEP 58.4ms (601 PTS) ATTEN 2dB REF –35.96dBm FREQ. LOWER UPPER OFFSET REF BW dBc dBm dBc dBm CARRIER POWER –23.62dBm/ 6.00000MHz RMS RESULTS 3.375MHz 750.0kHz –72.95 –96.56 –10.86 –34.48 6.375MHz 5.250MHz –69.38 –92.99 –0.51 –24.13 Figure 46. Zoomed 4-Channel QAM ACLR, fOUT = 840 MHz, Temperature = 25°C, Sum Scale = 20, Full-Scale Current = 25 mA, Span = 18 MHz, Channel 1 50 48 46 44 42 40 38 36 34 32 30 50 150 250 350 450 550 650 750 850 950 fOUT (MHz) +25°C +85°C –40°C Figure 47. Modulation Error Ratio, Equalized, 1-Channel 256-QAM, fDAC = 2.29376 GHz, Full-Scale Current = 20 mA, Sum Scale = 48 (Equalization Filter from Demodulation Toolbox on Spectrum Analyzer Used) 50 48 46 44 42 40 38 36 34 32 30 50 150 250 350 450 550 650 750 850 950 fOUT (MHz) +25°C +85°C –40°C Figure 48. Modulation Error Ratio, Unequalized, 1-Channel 256-QAM, fDAC = 2.29376 GHz, Full-Scale Current = 20 mA, Sum Scale = 48 CENTER 852.00MHz RES BW 30kHz VBW 300kHz SPAN 18MHz SWEEP 58.4ms (601 PTS) ATTEN 2dB REF –35.96dBm FREQ. LOWER UPPER OFFSET REF BW dBc dBm dBc dBm CARRIER POWER –23.20dBm/ 6.00000MHz RMS RESULTS 3.375MHz 750.0kHz –11.20 –34.40 –74.44 –97.64 6.375MHz 5.250MHz –0.77 –23.96 –69.07 –92.26 Figure 49. Zoomed 4-Channel QAM ACLR, fOUT = 840 MHz, Temperature = 25°C, Sum Scale = 20, Full-Scale Current = 25 mA, Span = 18 MHz, Channel 4 50 48 46 44 42 40 38 36 34 32 30 50 150 250 350 450 550 650 750 850 950 fOUT (MHz) +25°C +85°C –40°C Figure 50. Modulation Error Ratio, Equalized, 4-Channel 256-QAM, fDAC = 2.29376 GHz, Full-Scale Current = 25 mA, Sum Scale = 20 (Equalization Filter from Demodulation Toolbox on Spectrum Analyzer Used) 50 48 46 44 42 40 38 36 34 32 30 50 150 250 350 450 550 650 750 850 950 fOUT (MHz) +25°C +85°C –40°C Figure 51. Modulation Error Ratio, Unequalized, 4-Channel 256-QAM, fDAC = 2.29376 GHz, Full-Scale Current = 25 mA, Sum Scale = 20 |
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