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AD6644 Datasheet(PDF) 11 Page - Analog Devices |
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AD6644 Datasheet(HTML) 11 Page - Analog Devices |
11 / 25 page AD6644 Rev. D | Page 10 of 24 ANALOG FREQUENCY (MHz) 95 75 60 55 85 65 80 100 70 90 WORST OTHER SPUR HARMONICS (SECOND, THIRD) 0 102030 4050 6070 8090 100 ENCODE = 65MSPS AIN = –1dBFS Figure 10. Harmonics vs. Analog Frequency (IF) ANALOG INPUT POWER LEVEL (dBFS) 100 50 10 0 90 40 70 120 20 30 60 80 110 dBc dBFS ENCODE = 65MSPS AIN = 15.5MHz SFDR = 90dB REFERENCE LINE –80 –70 –60 –50 –40 –30 –20 –10 0 Figure 11. Single-Tone SFDR FREQUENCY (MHz) 0 –120 –130 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 5 10 15 20 25 30 ENCODE = 65MSPS AIN = 19MHz, 19.5MHz @ –7dBFS NO DITHER Figure 12. Two Tones at 19 MHz and 19.5 MHz FREQUENCY (MHz) 0 –120 –130 –110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 5 10 15 20 25 30 ENCODE = 65MSPS AIN = 15MHz, 15.5MHz @ –7dBFS NO DITHER Figure 13. Two Tones at 15 MHz and 15.5 MHz 100 50 10 0 90 40 70 20 30 60 80 110 dBFS dBc ENCODE = 65MSPS F1 = 15MHz F2 = 15.5MHz SFDR = 90dB REFERENCE LINE INPUT POWER LEVEL [(F1 = F2) dBFS] –77 –67 –57 –47 –37 –27 –17 –7 Figure 14. Two-Tone SFDR ENCODE FREQUENCY (MHz) 65 60 95 75 85 70 80 90 100 WORST SPUR SNR AIN = 2.2MHz @ –1dBFS 0 102030405060708090 Figure 15. SNR, Worst Spurious vs. Encode |
Similar Part No. - AD6644_17 |
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Similar Description - AD6644_17 |
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