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AD5426YRM bảng dữ liệu(PDF) 11 Page - Analog Devices |
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AD5426YRM bảng dữ liệu(HTML) 11 Page - Analog Devices |
11 / 24 page Data Sheet AD5426/AD5432/AD5443 Rev. G | Page 11 of 24 FREQUENCY (Hz) 100M 1 100 1k 10 10k 100k 1M 10M 3.5 3.0 2.0 2.5 1.5 1 0.5 0 TA = 25°C AD5443 LOADING 010101010101 VCC = 5V VCC = 3V Figure 24. Supply Current vs. Update Rate FREQUENCY (Hz) 100M 1 10 100 1k 10k 100k 1M 10M 6 0 –6 –12 –18 –24 –30 –36 –42 –48 –54 –60 –66 –72 –78 –84 –90 –96 –102 LOADING ZS TO FS ALL ON DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 ALL OFF TA = 25°C VDD = 5V VREF = ±3.5V CCOMP = 1.8pF AD8038 AMPLIFIER Figure 25. Reference Multiplying Bandwidth vs. Frequency and Code FREQUENCY (Hz) 100M 1 10 100 1k 10k 100k 1M 10M 0.2 0 –0.2 –0.4 –0.6 –0.8 TA = 25°C VDD = 5V VREF = ±3.5V CCOMP = 1.8pF AD8038 AMPLIFIER Figure 26. Reference Multiplying Bandwidth—All 1s Loaded FREQUENCY (Hz) 100M 10k 100k 1M 10M 3 0 –3 –6 –9 TA = 25°C VDD = 5V AD8038 AMPLIFIER 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 VREF = ±2V, AD8038 CC 1.47pF Figure 27. Reference Multiplying Bandwidth vs. Frequency and Compensation Capacitor TIME (ns) 300 0 50 100 150 200 250 0.060 0.030 0.040 0.050 0.010 0.020 –0.010 0 –0.020 TA = 25°C VREF = 0V AD8038 AMPLIFIER CCOMP = 1.8pF AD5443 VDD 3V, 0V REF NRG = 0.088nVs 0x800 TO 0x7FF VDD 5V, 0V REF NRG = 0.119nVs, 0x800 TO 0x7FF VDD 3V, 0V REF NRG = 1.877nVs 0x7FF TO 0x800 VDD 5V, 0V REF NRG = 2.049nVs 0x7FF TO 0x800 Figure 28. Midscale Transition VREF = 0 V TIME (ns) 300 0 50 100 150 200 250 –1.70 –1.71 –1.72 –1.73 –1.74 –1.75 –1.76 TA = 25°C VREF = 3.5V AD8038 AMPLIFIER CCOMP = 1.8pF AD5443 VDD 3V, 3.5V REF NRG = 0.647nVs 0x800 TO 0x7FF VDD 5V, 3.5V REF, NRG = 0.364nVs, 0x800 TO 0x7FF VDD 3V, 3.5V REF NRG = 1.433nVs 0x7FF TO 0x800 VDD 5V, 3.5V REF NRG = 1.184nVs 0x7FF TO 0x800 Figure 29. Midscale Transition VREF = 3.5 V |
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