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AD5446YRM-REEL bảng dữ liệu(PDF) 11 Page - Analog Devices |
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AD5446YRM-REEL bảng dữ liệu(HTML) 11 Page - Analog Devices |
11 / 28 page Data Sheet AD5444/AD5446 Rev. E | Page 11 of 28 10k 100k 1M 10M 100M FREQUENCY (Hz) 3 –9 0 TA = 25°C VDD = 5V –6 –3 VREF = ±2V, AD8038 CCOMP = 1pF VREF = ±2V, AD8038 CCOMP = 1.5pF VREF = ±15V, AD8038 CCOMP = 1pF VREF = ±15V, AD8038 CCOMP = 1.5pF VREF = ±15V, AD8038 CCOMP = 1.8pF Figure 24. Reference Multiplying Bandwidth vs. Frequency and Compensation Capacitor 50 200 225 250 TIME (ns) 0.08 –0.06 –0.02 175 100 125 150 75 0.06 0.04 0.02 0 –0.04 TA = 25°C VREF = 0V AD8038 AMP CCOMP = 1.8pF VDD = 5V 0x7FF TO 0x800 NRG = 2.154nV-s VDD = 3V 0x7FF TO 0x800 NRG = 1.794nV-s VDD = 5V 0x800 TO 0x7FF NRG = 0.694nV-s VDD = 5V 0x800 TO 0x7FF NRG = 0.694nV-s Figure 25. Midscale Transition, VREF = 0 V 50 200 225 250 TIME (ns) –1.66 –1.80 –1.76 175 100 125 150 75 –1.68 –1.70 –1.72 –1.74 –1.78 TA = 25°C VREF = 3.5V AD8038 AMP CCOMP = 1.8pF VDD = 5V 0x7FF TO 0x800 NRG = 2.154nV-s VDD = 3V 0x7FF TO 0x800 NRG = 1.794nV-s VDD = 5V 0x800 TO 0x7FF NRG = 0.694nV-s VDD = 5V 0x800 TO 0x7FF NRG = 0.694nV-s Figure 26. Midscale Transition, VREF = 3.5 V 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) 10 –100 –90 –70 –50 –30 –10 TA = 25°C VDD = 3V AD8038 AMPLIFIER –80 –60 –40 –20 0 FULL SCALE ZERO SCALE Figure 27. Power Supply Rejection Ratio vs. Frequency TA = 25°C VDD = 5V VREF = ±3.5V 100 1k 10k 100k FREQUENCY (Hz) –60 –90 –85 –75 –65 –80 –70 Figure 28. THD + Noise vs. Frequency 0 50 fOUT (kHz) 100 0 40 20 30 40 10 80 60 20 TA = 25°C VREF = 3.5V AD8038 AMP MCLK = 500kHz MCLK = 1MHz MCLK = 200kHz Figure 29. Wideband SFDR vs. fOUT Frequency |
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