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AD5449YRU 데이터시트(PDF) 11 Page - Analog Devices |
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AD5449YRU 데이터시트(HTML) 11 Page - Analog Devices |
11 / 28 page Data Sheet AD5429/AD5439/AD5449 Rev. E | Page 11 of 28 0 2 4 6 8 10 12 14 10k 1k 10 100 1 100k 1M 10M 100M FREQUENCY (Hz) TA = 25°C LOADING ZS TO FS VDD = 5V VDD = 3V VDD = 2.5V Figure 19. Supply Current vs. Update Rate –102 –66 –54 –42 –30 –18 –6 6 1 100 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) TA = 25°C LOADING ZS TO FS 0 –60 –48 –36 –24 –12 –84 –72 –78 –90 –96 TA = 25°C VDD = 5V VREF = ±3.5V CCOMP = 1.8pF AMP = AD8038 ALL ON DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 ALL OFF 10 Figure 20. Reference Multiplying Bandwidth vs. Frequency and Code –0.8 –0.6 –0.4 –0.2 0 0.2 10k 1k 10 100 1 100k 1M 10M 100M FREQUENCY (Hz) TA = 25°C VDD = 5V VREF = ±3.5V CCOMP = 1.8pF AMP = AD8038 Figure 21. Reference Multiplying Bandwidth—All 1s Loaded –9 –6 –3 0 3 10k 100k 1M 10M 100M FREQUENCY (Hz) TA = 25°C VDD = 5V VREF = ±2V, AD8038 CC 1.47pF VREF = ±2V, AD8038 CC 1pF VREF = ±0.15V, AD8038 CC 1pF VREF = ±0.15V, AD8038 CC 1.47pF VREF = ±3.51V, AD8038 CC 1.8pF Figure 22. Reference Multiplying Bandwidth vs. Frequency and Compensation Capacitor –0.010 –0.005 0.005 0.025 0.035 0.045 0.015 0 0.020 0.030 0.040 0.010 0 20 40 60 80 100 120 140 160 180 200 TIME (ns) TA = 25°C VREF = 0V AMP = AD8038 CCOMP = 1.8pF 0x7FF TO 0x800 0x800 TO 0x7FF VDD = 5V VDD = 3V VDD = 3V VDD = 5V Figure 23. Midscale Transition, VREF = 0 V 0 20 40 60 80 100 120 140 160 180 200 TIME (ns) –1.77 –1.76 –1.75 –1.74 –1.73 –1.72 –1.71 –1.70 –1.69 –1.68 0x7FF TO 0x800 0x800 TO 0x7FF VDD = 5V VDD = 3V VDD = 3V VDD = 5V TA = 25°C VREF = 3.5V AMP = AD8038 CCOMP = 1.8pF Figure 24. Midscale Transition, VREF = 3.5 V |
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