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AD9851 Arkusz danych(PDF) 8 Page - Analog Devices |
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AD9851 Arkusz danych(HTML) 8 Page - Analog Devices |
8 / 24 page AD9851 –8– FREQUENCY OFFSET – Hz –155 100 1k 10k 100k –145 –140 –135 –130 –125 –120 AD9851 RESIDUAL PHASE NOISE –150 TPC 11. Output Residual Phase Noise (5.2 MHz AOUT), 6 OUT OUT REFCLK Multiplier Disabled, System Clock = 180 MHz, Ref- erence Clock = 180 MHz SYSTEM CLOCK FREQUENCY – MHz 45 10 20 40 60 80 100 120 140 160 180 50 55 60 65 70 75 VS = +3.3V VS = +5V FUNDAMENTAL OUTPUT = SYSTEM CLOCK/3 TPC 12. Spurious-free dynamic range (SFDR) is generally a function of the DAC analog output frequency. Analog output frequencies of 1/3 the system clock rate are consid- ered worst case. Plotted below are typical worst case SFDR numbers for various system clock rates. 1 Ch1 100mV T [ ] Tek Stop 2.50GS/s 22 Acgs : 2.0ns @ : 105.2ns C1 Rise 2.03ns M 20.0ns Ch 1 252mV D 5.00ns Runs After TPC 13. Comparator RiseTime, 15 pF Load 1 Ch1 100mV T [ ] Tek Stop 2.50GS/s 2227 Acgs : 2.3ns @ : 103.6ns C1 Fall 2.33ns M 20.0ns Ch 1 252mV D 5.00ns Runs After TPC 14. Comparator FallTime, 15 pF Load ANALOG OUTPUT FREQUENCY – MHz 30 10 20 30 40 50 60 0 70 50 70 80 90 110 120 VS = +3.3V VS = +5V 100 60 40 output frequency at 180 MHz system clock (upper trace) and 125 MHz system clock (lower trace) SYSTEM CLOCK – MHz 0 140 20 40 60 100 80 120 0 20 40 60 80 100 120 VS = +3.3V VS = +5V 160 180 clock frequency REV. D |
Podobny numer części - AD9851_15 |
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Podobny opis - AD9851_15 |
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