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AD4020 데이터시트(PDF) 13 Page - Analog Devices |
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AD4020 데이터시트(HTML) 13 Page - Analog Devices |
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13 / 37 page ![]() AD4020 Data Sheet Rev. A | Page 12 of 36 102 97 99 100 101 98 95 96 94 16.6 15.4 15.6 15.8 16.0 16.2 16.4 2.4 4.8 4.5 3.9 4.2 3.6 3.3 3.0 2.7 5.1 REFERENCE VOLTAGE (V) ENOB SINAD SNR Figure 17. SNR, SINAD, and ENOB vs. Reference Voltage 60 58 55 56 59 57 54 0 9 8 5 6 7 4 3 2 1 10 TIME (Seconds) Figure 18. 1/f Noise for 0.1 Hz to 10 Hz Bandwidth, 50 kSPS, 2500 Samples Averaged per Reading 95 100 105 110 115 120 125 130 135 140 0 2 4 8 16 32 64 128 256 512 1024 DECIMATION RATE DR fIN = 1kHz fIN = 10kHz Figure 19. SNR vs. Decimation Rate for Various Input Frequencies –114 –124 –120 –118 –116 –122 –128 –126 –130 133 126 127 128 130 129 131 132 2.4 4.8 4.5 3.9 4.2 3.6 3.3 3.0 2.7 5.1 REFERENCE VOLTAGE (V) SFDR THD Figure 20. THD and SFDR vs. Reference Voltage 0.4 0.5 0.6 0.7 0.8 0.9 1.0 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 REFERENCE VOLTAGE (V) Figure 21. Reference Current vs. Reference Voltage T 93 94 95 96 97 98 99 100 101 0 10 20 30 40 50 60 70 80 tQUIET2 (ns) VIO = 5.5V VIO = 3.6V VIO = 1.89V Figure 22. SINAD vs. tQUIET2 |
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