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AD9912 Arkusz danych(PDF) 11 Page - Analog Devices |
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AD9912 Arkusz danych(HTML) 11 Page - Analog Devices |
11 / 40 page AD9912 Rev. F | Page 11 of 40 TYPICAL PERFORMANCE CHARACTERISTICS AVDD, AVDD3, and DVDD at nominal supply voltage; DAC RSET = 10 kΩ, unless otherwise noted. See Figure 26 for 1 GHz reference phase noise used for generating these plots. 0 100 200 300 400 500 OUTPUT FREQUENCY (MHz) –50 –55 –60 –65 –70 –75 –80 +25°C –40°C +85°C 0 100 200 300 400 500 FREQUENCY (MHz) 10 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 98.6MHz –67dBc 500MHz 3kHz 10kHz CARRIER: SFDR: FREQ. SPAN: RESOLUTION BW: VIDEO BW: Figure 3. Wideband SFDR vs. Output Frequency at −40°C, +25°C, and +85°C, SYSCLK = 1 GHz (SYSCLK PLL Bypassed) Figure 6. Wideband SFDR at 98.6 MHz, SYSCLK = 1 GHz (SYSCLK PLL Bypassed) 0 100 200 300 400 500 OUTPUT FREQUENCY (MHz) –50 –55 –60 –65 –70 –75 –80 HIGH VDD NORMAL VDD LOW VDD 0 100 200 300 400 500 FREQUENCY (MHz) 10 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 201.1MHz –61dBc 500MHz 3kHz 10kHz CARRIER: SFDR: FREQ. SPAN: RESOLUTION BW: VIDEO BW: Figure 4. Variation of Wideband SFDR vs. Frequency over DAC Power Supply Voltage, SYSCLK = 1 GHz (SYSCLK PLL Bypassed) Figure 7. Wideband SFDR at 201.1 MHz, SYSCLK = 1 GHz (SYSCLK PLL Bypassed) 0 100 200 300 400 500 FREQUENCY (MHz) 10 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 20.1MHz –79dBc 500MHz 3kHz 10kHz CARRIER: SFDR: FREQ. SPAN: RESOLUTION BW: VIDEO BW: 0 100 200 300 400 500 FREQUENCY (MHz) 10 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 398.7MHz –59dBc 500MHz 3kHz 10kHz CARRIER: SFDR: FREQ. SPAN: RESOLUTION BW: VIDEO BW: Figure 5. Wideband SFDR at 20.1 MHz, SYSCLK = 1 GHz (SYSCLK PLL Bypassed) Figure 8. Wideband SFDR at 398.7 MHz, SYSCLK = 1 GHz (SYSCLK PLL Bypassed) |
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