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AD9645 数据表(PDF) 12 Page - Analog Devices |
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AD9645 数据表(HTML) 12 Page - Analog Devices |
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12 / 36 page ![]() AD9645 Data Sheet Rev. 0 | Page 12 of 36 TYPICAL PERFORMANCE CHARACTERISTICS AD9645-80 0 –140 –120 –100 –80 –60 –40 –20 0 10 20 30 40 FREQUENCY (MHz) 80MSPS 9.7MHz AT –1dBFS SNR = 74.6dB (75.6dBFS) SFDR = 95.2dBc Figure 9. Single-Tone 16k FFT with fIN = 9.7 MHz, fSAMPLE = 80 MSPS 0 –140 –120 –100 –80 –60 –40 –20 0 10 20 30 40 FREQUENCY (MHz) 80MSPS 30.5MHz AT –1dBFS SNR = 74.3dB (75.3dBFS) SFDR = 90.9dBc Figure 10. Single-Tone 16k FFT with fIN = 30.5 MHz, fSAMPLE = 80 MSPS 0 –140 –120 –100 –80 –60 –40 –20 0 10 20 30 40 FREQUENCY (MHz) 80MSPS 70.2MHz AT –1dBFS SNR = 73.4dB (74.4dBFS) SFDR = 95.3dBc Figure 11. Single-Tone 16k FFT with fIN = 70.2 MHz, fSAMPLE = 80 MSPS 0 –140 –120 –100 –80 –60 –40 –20 0 10 20 30 40 FREQUENCY (MHz) 80MSPS 139.5MHz AT –1dBFS SNR = 71dB (72dBFS) SFDR = 80.8dBc Figure 12. Single-Tone 16k FFT with fIN = 139.5 MHz, fSAMPLE = 80 MSPS 0 –140 –120 –100 –80 –60 –40 –20 0 10 20 30 40 FREQUENCY (MHz) 80MSPS 200.5MHz AT –1dBFS SNR = 68.9dB (69.9dBFS) SFDR = 81.7dBc Figure 13. Single-Tone 16k FFT with fIN = 200.5 MHz, fSAMPLE = 80 MSPS 0 –15 –30 –45 –60 –75 –105 –90 –120 –135 0 8 4 12 16 28 20 24 32 40 36 FREQUENCY (MHz) 80MSPS 200.5MHz AT –1dBFS SNR = 70.8dB (71.8dBFS) SFDR = 81.5dBc Figure 14. Single-Tone 16k FFT with fIN = 200.5 MHz, fSAMPLE = 80 MSPS, Clock Divide = Divide-by-8 |
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