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AD9789BBCZ Datasheet(PDF) 16 Page - Analog Devices |
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AD9789BBCZ Datasheet(HTML) 16 Page - Analog Devices |
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16 / 76 page ![]() AD9789 Rev. A | Page 16 of 76 0 –10 –20 –30 –40 –50 –60 –70 –80 50 250 450 650 850 1050 FREQUENCY (MHz) DOCSIS3 –40°C 0°C +25°C +85°C Figure 32. ACLR Performance over Temperature, 4-Channel QAM, fOUT = 200 MHz, fDAC = 2.3 GHz, Full-Scale Current = 25 mA, Sum Scale = 20 (DOCSIS SPEC Is −67 dBc; Harmonic Exception Is −63 dBc) –55 –60 –65 –70 –75 –80 –85 0 100 200 300 400 500 600 700 800 900 1000 fOUT (MHz) DOCSIS3 25°C 65°C 85°C Figure 33. Second-Order Harmonic Performance vs. fOUT over Temperature, 4-Channel QAM, fDAC = 2.3 GHz, Full-Scale Current = 25 mA, Sum Scale = 20 (DOCSIS SPEC Is −67 dBc; Harmonic Exception Is −63 dBc) –55 –60 –65 –70 –75 –80 –85 0 100 200 300 400 500 600 700 800 900 1000 fOUT (MHz) DOCSIS3 25°C 65°C 85°C Figure 34. Noise Floor vs. fOUT over Temperature (ACLR Measured Beyond 30 MHz), 4-Channel QAM, fDAC = 2.3 GHz, Full-Scale Current = 25 mA, Sum Scale = 20 (DOCSIS SPEC Is −67 dBc) 0 –10 –20 –30 –40 –50 –60 –70 –80 50 250 450 650 850 1050 FREQUENCY (MHz) DOCSIS3 –40°C 0°C +25°C +85°C Figure 35. ACLR Performance over Temperature, 4-Channel QAM, fOUT = 800 MHz, fDAC = 2.3 GHz, Full-Scale Current = 25 mA, Sum Scale = 20 (DOCSIS SPEC Is −67 dBc) –55 –60 –65 –70 –75 –80 –85 0 100 200 300 400 500 600 700 800 900 1000 fOUT (MHz) DOCSIS3 25°C 65°C 85°C Figure 36. Third-Order Harmonic Performance vs. fOUT over Temperature, 4-Channel QAM, fDAC = 2.3 GHz, Full-Scale Current = 25 mA, Sum Scale = 20 (DOCSIS SPEC Is −67 dBc; Harmonic Exception Is −63 dBc) 0 –10 –20 –30 –40 –50 –60 –70 –80 50 250 450 650 850 1050 FREQUENCY (MHz) DOCSIS3 2.3GHz 2.2GHz 2.4GHz Figure 37. ACLR Performance over fDAC, 4-Channel QAM, fOUT = 850 MHz, Full-Scale Current = 25 mA, Temperature = 25°C, Sum Scale = 20 (DOCSIS SPEC Is −67 dBc) |
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