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ADUCM310 Scheda tecnica(PDF) 25 Page - Analog Devices |
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ADUCM310 Scheda tecnica(HTML) 25 Page - Analog Devices |
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25 / 28 page ![]() ADuCM310 Data Sheet Rev. B Page 24 of 27 160 140 120 100 80 60 40 20 0 5 21 7 9 11 13 15 17 19 IDAC OUTPUT CURRENT (mA) +115°C +85°C +25°C –40°C Figure 20. Typical IDAC5 PVDD_IDAC5 Pin Voltage Headroom vs. Output Current for Different Temperatures, PVDD = 1.8 V 90 0 10 20 30 40 50 60 70 80 1.30 1.45 1.50 1.60 1.80 2.00 2.50 EXT VREF (V) 20 80 46.2 61.9 77.2 77.6 78.2 Figure 21. ADC SNR vs. External Reference Voltage (EXT VREF) 3.0 0 0.5 1.0 1.5 2.0 2.5 0 2 4 6 8 10 12 14 16 LOAD CURRENT (mA) VOH MAX VOH MIN VOL MAX VOL MIN Figure 22. Typical Output Voltage vs. Load Current TIME (Not to Scale) 3.60 50ms min DVDD MUST BE ABOVE 2.9V FOR AT LEAST 50ms TO COMPLETE POR AFTER 50ms DVDD MUST STAY ABOVE 2.85V INCLUDING NOISE EXCURSIONS 2.90 2.85 Figure 23. DVDD Power-On Requirements |
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