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AD9625BBPRL-2.5 Datasheet(PDF) 22 Page - Analog Devices |
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AD9625BBPRL-2.5 Datasheet(HTML) 22 Page - Analog Devices |
22 / 74 page ![]() AD9625 Data Sheet Rev. C | Page 20 of 72 AD9625-2.5 For the AD9625-2.5 model, full-scale range used is 1.2 V. 0 –120 –100 –80 –60 –40 –20 0 250 500 750 1000 1250 FREQUENCY (MHz) 2500MSPS 1816.7MHz AT –1.0dBFS SNR = 57.1dBFS SFDR = 80.35dBc Figure 25. FFT Plot at 2.5 GSPS, fIN = 1816.7 MHz at AIN (SFDR = 80.35 dBc, SNR = 57.1 dBFS) 0 –120 –100 –80 –60 –40 –20 0 250 500 750 1000 1250 FREQUENCY (MHz) 2500MSPS 730.3MHz AT –1.0dBFS SNR = 57.8dBFS SFDR = 77.1dBc Figure 26. FFT Plot at 2.5 GSPS, fIN = 730.3 MHz at AIN (SFDR = 77.1 dBc, SNR = 57.8 dBFS) 0 –120 –100 –80 –60 –40 –20 0 250 500 750 1000 1250 FREQUENCY (MHz) 2500MSPS 115.05MHz AT –1.0dBFS SNR = 58.1dBFS SFDR = 78.4dBc Figure 27. FFT Plot at 2.5 GSPS, fIN = 115.05 MHz at AIN (SFDR = 78.4 dBc, SNR = 58.1 dBFS) 0 –120 –100 –80 –60 –40 –20 0 250 500 750 1000 1250 FREQUENCY (MHz) 2500MSPS 2990.11MHz AT –1.0dBFS SNR = 55.3dBFS SFDR = 70.6dBc Figure 28. FFT Plot at 2.5 GSPS, fIN = 2990.11 MHz at AIN (SFDR = 70.6 dBc, SNR = 55.3 dBFS) (Input Network in Figure 75 Used) –140 –150 –148 –146 –144 –142 0 1000 2000 3000 4000 5000 6000 INPUT FREQUENCY (MHz) Figure 29. Noise Specrtal Density (NSD) vs. AIN at 2.5 GSPS (Input Network in Figure 76 Used <2 GHz, Input Network in Figure 75 Used >2 GHz) 100 90 80 70 60 50 40 30 20 10 0 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 AMPLITUDE (dB) SFDR (dBFS) SNR (dBFS) SFDR (dBc) SNR (dB) Figure 30. SNR/SFDR vs. Analog Input Amplitude at 2.5 GSPS, fIN = 241 MHz at AIN |
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