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AD7699 датащи(PDF) 12 Page - Analog Devices |
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AD7699 датащи(HTML) 12 Page - Analog Devices |
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12 / 28 page ![]() AD7682/AD7689 Rev. 0 | Page 12 of 28 100 95 90 85 80 75 70 65 60 0 50 100 150 200 FREQUENCY (kHz) VDD = VREF = 5V, –0.5dB VDD = VREF = 5V, –10dB VDD = VREF = 2.5V, –0.5dB VDD = VREF = 2.5V, –10dB Figure 12. SNR vs. Frequency 96 94 92 90 88 86 84 82 80 17.0 16.5 16.0 15.5 15.0 14.5 14.0 13.5 13.0 1.0 REFERENCE VOLTAGE (V) 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SNR @ 2kHz SINAD @ 2kHz SNR @ 20kHz SINAD @ 20kHz ENOB @ 2kHz ENOB @ 20kHz Figure 13. SNR, SINAD, and ENOB vs. Reference Voltage 96 94 92 90 88 86 84 –55 TEMPERATURE (°C) –35 –15 5 25 45 65 85 105 125 fIN = 20kHz VDD = VREF = 5V VDD = VREF = 2.5V Figure 14. SNR vs. Temperature 100 95 90 85 80 75 70 65 60 0 50 100 150 200 FREQUENCY (kHz) VDD = VREF = 5V, –0.5dB VDD = VREF = 5V, –10dB VDD = VREF = 2.5V, –0.5dB VDD = VREF = 2.5V, –10dB Figure 15. SINAD vs. Frequency 130 125 120 115 110 105 100 95 90 85 80 75 70 1.0 –60 –65 –70 –75 –80 –85 –90 –95 –100 –105 –110 –115 –120 REFERENCE VOLTAGE (V) 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SFDR = 2kHz SFDR = 20kHz THD = 2kHz THD = 20kHz Figure 16. SFDR and THD vs. Reference Voltage –90 –95 –100 –105 –110 –55 TEMPERATURE (°C) –35 –15 5 25 45 65 85 105 125 fIN = 20kHz VDD = VREF = 5V VDD = VREF = 2.5V Figure 17. THD vs. Temperature |
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