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AD7621 数据表(PDF) 14 Page - Analog Devices |
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AD7621 数据表(HTML) 14 Page - Analog Devices |
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14 / 32 page ![]() AD7621 Rev. 0 | Page 14 of 32 INPUT LEVEL (dB) 89.5 91.0 90.5 90.0 –60 –50 –40 –30 –20 –10 SNR SINAD 0 Figure 17. SNR and SINAD vs. Input Level (Referred to Full Scale) TEMPERATURE ( °C) 0 16 14 12 10 8 6 4 2 200 280 270 260 250 240 230 220 210 –55 –35 –15 5 25 45 65 85 105 125 AVDD DVDD OVDD, 3.3V OVDD, 2.5V Figure 18. Power-Down Operating Currents vs. Temperature SAMPLING RATE (SPS) 0.1 100k 10k 1k 100 10 1 10 100 1k 10k 100M 1M 10M AVDD, WARP/NORMAL AVDD, IMPULSE DVDD, ALL MODES OVDD, 2.5V, ALL MODES PDREF = PDBUF = HIGH OVDD = 3.3V, ALL MODES Figure 19. Operating Current vs. Sample Rate CL (pF) 4 6 8 10 12 14 16 18 20 0 50 100 150 200 OVDD = 2.5V @ 85 °C OVDD = 2.5V @ 25 °C OVDD = 3.3V @ 85 °C OVDD = 3.3V @ 25 °C Figure 20. Typical Delay vs. Load Capacitance CL |
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