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AD9481 датащи(PDF) 13 Page - Analog Devices |
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AD9481 датащи(HTML) 13 Page - Analog Devices |
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13 / 29 page ![]() AD9481 Rev. 0 | Page 12 of 28 TYPICAL PERFORMANCE CHARACTERISTICS AVDD, DRVDD = 3.3 V, T = 25°C, AIN differential drive, FS = 1, internal reference mode, unless otherwise noted. 0 –90 –80 –70 –60 –50 –40 –30 –20 –10 040 80 20 60 100 120 (MHz) SNR = 45.8dB H2 = –65.2dBc H3 = –63.2dBc SFDR = 63.2dBc Figure 4. FFT: fS = 250 MSPS, AIN = 10.3 MHz @ −1 dBFS 0 –90 –80 –70 –60 –50 –40 –30 –20 –10 040 80 20 60 100 120 (MHz) SNR = 45.8dB H2 = –68.5dBc H3 = –63.5dBc SFDR = 63.8dBc Figure 5. FFT: fS = 250 MSPS, AIN = 70 MHz @ −1 dBFS 0 –90 –80 –70 –60 –50 –40 –30 –20 –10 040 80 20 60 100 120 (MHz) SNR = 45.9dB H2 = –66.6dBc H3 = –70.1dBc SFDR = 65.9dBc Figure 6. FFT: fS = 250 MSPS, AIN = 70 MHz @ −1 dBFS, Single-Ended Input 0 –90 –80 –70 –60 –50 –40 –30 –20 –10 040 80 20 60 100 120 (MHz) SNR = 45.6dB H2 = –72.9dBc H3 = –65.2dBc SFDR = 59.6dBc Figure 7. FFT: fS = 250 MSPS, AIN = 170 MHz @ −1 dBFS 90 85 80 75 70 65 60 55 50 45 40 0 400 350 300 250 200 150 100 50 AIN (MHz) H3 SFDR SNR SINAD H2 Figure 8. Analog Input Frequency Sweep, AIN = −1 dBFS, FS = 1 V, fS = 250 MSPS 90 85 80 75 70 65 60 55 50 45 40 0 400 350 300 250 200 150 100 50 AIN (MHz) H3 SNR SINAD H2 SFDR Figure 9. Analog Input Frequency Sweep, AIN =−1 dBFS, FS = 0.75 V, fS = 250 MSPS, External VREF Mode |
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