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ADCA3270ACEZ-R7 数据表(PDF) 13 Page - Analog Devices |
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ADCA3270ACEZ-R7 数据表(HTML) 13 Page - Analog Devices |
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13 / 14 page ![]() Data Sheet ADCA3270 Rev. 0 | Page 13 of 14 Figure 22 and Figure 23 illustrates the MER performance trade- off for different supply voltage configurations. Figure 24 and Figure 25 illustrates the modulation error ratio performance trade-off for different bias current configurations. 60 35 71.5 75.5 TOTAL COMPOSITE OUTPUT POWER (dBmV) 40 45 50 55 72.0 72.5 73.0 73.5 74.0 74.5 75.0 18V 19V 20V 21V 22V 23V 24V Figure 22. MER RMS vs. Total Composite Output Power, ICC = 475 mA, VCC = 18 V to 24 V, 1 V Steps, 9 dB Tilt 60 35 71.5 75.5 TOTAL COMPOSITE OUTPUT POWER (dBmV) 40 45 50 55 72.0 72.5 73.0 73.5 74.0 74.5 75.0 18V 19V 20V 21V 22V 23V 24V Figure 23. MER RMS vs. Total Composite Output Power, ICC = 475 mA, VCC = 18 V to 24 V, 1 V Steps, 22 dB Tilt 60 35 71.5 75.5 TOTAL COMPOSITE OUTPUT POWER (dBmV) 40 45 50 55 72.0 72.5 73.0 73.5 74.0 74.5 75.0 350mA 375mA 400mA 425mA 450mA 475mA Figure 24. MER RMS vs. Total Composite Output Power, VCC = 24 V, 25 mA Steps from 350 mA to 475 mA, 9 dB Tilt 60 35 71.5 75.5 TOTAL COMPOSITE OUTPUT POWER (dBmV) 40 45 50 55 72.0 72.5 73.0 73.5 74.0 74.5 75.0 350mA 375mA 400mA 425mA 450mA 475mA Figure 25. MER RMS vs. Total Composite Output Power, VCC = 24 V, 25 mA Steps from 350 mA to 475 mA, 22 dB Tilt |
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