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AD9268 数据表(PDF) 20 Page - Analog Devices |
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AD9268 数据表(HTML) 20 Page - Analog Devices |
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20 / 45 page ![]() AD9268 Rev. A | Page 19 of 44 0 –20 –40 –60 –80 –100 –120 –140 FREQUENCY (MHz) SECOND HARMONIC 105MSPS 2.4MHz @ –6dBFS SNR = 78.2dB (79.2dBFS) SFDR = 90dBc THIRD HARMONIC 010 20 30 40 50 Figure 20. AD9268-105 Single-Tone FFT with fIN = 2.4 MHz 0 –20 –40 –60 –80 –100 –120 –140 FREQUENCY (MHz) SECOND HARMONIC THIRD HARMONIC 105MSPS 70.1MHz @ –1dBFS SNR = 77.5dB (78.5dBFS) SFDR = 93.0dBc 010 20 30 40 50 Figure 21. AD9268-105 Single-Tone FFT with fIN = 70.1 MHz 0 –20 –40 –60 –80 –100 –120 –140 FREQUENCY (MHz) 105MSPS 140.1MHz @ –1dBFS SNR = 75.7dB (76.7dBFS) SFDR = 85.5dBc SECOND HARMONIC THIRD HARMONIC 010 20 30 40 50 Figure 22. AD9268-105 Single-Tone FFT with fIN = 140.1 MHz 0 –20 –40 –60 –80 –100 –120 –140 FREQUENCY (MHz) THIRD HARMONIC 105MSPS 200.3MHz @ –1dBFS SNR = 74.0dB (75.0dBFS) SFDR = 79dBc SECOND HARMONIC 010 20 30 40 50 Figure 23. AD9268-105 Single-Tone FFT with fIN = 200.3 MHz 0 –20 –40 –60 –80 –100 –120 –140 FREQUENCY (MHz) SECOND HARMONIC THIRD HARMONIC 105MSPS 70.1MHz @ –6dBFS SNR = 72.7dB (78.7dBFS) SFDR = 97.6dBc 010 20 30 40 50 Figure 24. AD9268-105 Single-Tone FFT with fIN = 70.1 MHz with Dither Enabled 120 100 80 60 40 20 0 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 INPUT AMPLITUDE (dBFS) SNR (dBFS) SFDR (dBc) SNR (dBc) SFDR (dBFS) Figure 25. AD9268-105 Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with fIN = 98.12 MHz |
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