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AD6657EBZ 数据表(PDF) 13 Page - Analog Devices |
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AD6657EBZ 数据表(HTML) 13 Page - Analog Devices |
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13 / 32 page ![]() AD6657 Rev. 0 | Page 13 of 32 0 –20 –40 –60 –80 –120 –100 –140 10 0 20 3040506070 8090 FREQUENCY (MHz) SECOND HARMONIC THIRD HARMONIC fS = 185MSPS fIN = 230.3MHz @ –1.6dBFS NSR 33% BW MODE, TW = 17 SNR = 69.3dB (71dBFS) (IN-BAND) SFDR = 85.4dBc (IN-BAND) Figure 11. Single-Tone FFT with fIN = 230.3 MHz, NSR Enabled in 33% BW Mode with Tuning Word = 17 0 10 20 30 40 50 60 70 80 90 100 INPUT AMPLITUDE (dBFS) SNR (dBc) SFDR (dBc) SNR (dBFS) SFDR (dBFS) Figure 12. Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with fIN = 70.3 MHz 60 65 70 75 80 85 90 95 60 110 160 210 260 300 INPUT FREQUENCY (MHz) SNR (dBFS) SFDR (dBc) Figure 13. Single-Tone SNR/SFDR vs. Input Frequency (fIN) with 1.75 V p-p Full Scale 60 65 70 75 80 85 90 95 60 110 160 210 260 300 INPUT FREQUENCY (MHz) SNR (dBFS) SFDR (dBc) Figure 14. Single-Tone SNR/SFDR vs. Input Frequency (fIN) with 2.0 V p-p Full Scale 50 55 60 65 70 75 80 85 90 95 30 50 70 90 110 130 150 170 190 210 230 250 SAMPLE RATE (MSPS) SFDR (dBc) SNR (dBFS) Figure 15. Single-Tone SNR/SFDR vs. Sample Rate (fS) with fIN = 70.1 MHz 0 –20 –40 –60 –80 –100 –120 10 0 2030 405060 708090 FREQUENCY (MHz) fS = 185MSPS fIN1 = 169.1MHz @ –7dBFS fIN2 = 172.1MHz @ –7dBFS SFDR = 81.8dBc Figure 16. Two-Tone FFT with fIN1 = 169.1 MHz and fIN2 = 172.1 MHz |
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