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AD7294 데이터시트(PDF) 17 Page - Analog Devices |
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AD7294 데이터시트(HTML) 17 Page - Analog Devices |
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17 / 48 page ![]() AD7294 Data Sheet Rev. I | Page 16 of 47 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 –2.5 0 6 5 4 3 2 1 REFERENCE VOLTAGE (V) MIN INL MAX INL TA = 25°C VDRIVE = 5V, VREF RANGE VDD = 5V SINGLE-ENDED I2C MODE 400kHz Figure 18. ADC INL vs. Reference Voltage 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 0 6 5 4 3 2 1 REFERENCE VOLTAGE (V) MIN DNL MAX DNL TA = 25°C VDRIVE = 5V, VREF RANGE VDD = 5V SINGLE-ENDED I2C MODE 400kHz Figure 19. ADC DNL vs. Reference Voltage 2.0 1.0 1.5 0.5 0 –1.0 –2.0 –0.5 –1.5 CODE 256 512 0 768 1024 1280 1536 1792 2048 2304 2560 2816 3072 3328 3584 3840 4096 AVDD = DVDD = 5V VDRIVE = 5V, INTERNAL REF, OFFSET IN A/B/C/D = FLOATING Figure 20. DAC INL 0.6 0.4 0.2 0 –0.4 –0.6 –0.2 CODE 256 512 0 768 1024 1280 1536 1792 2048 2304 2560 2816 3072 3328 3584 3840 4096 AVDD = DVDD = 5V VDRIVE = 5V, INTERNAL REF, OFFSET IN A/B/C/D = FLOATING Figure 21. DAC DNL 20 –20 –15 –10 –5 0 5 10 15 TIME (s) 0 1 2 3 4 5 6 7 8 9 10 Figure 22. 0.1 Hz to 10 Hz DAC Output Noise (Code 800) 5.0 0 0.5 1.0 1.5 2.5 3.5 4.5 2.0 3.0 4.0 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 8 9 10 TIME (µs) 64pF 1nF 10nF Figure 23. Settling Time for a ¼ to ¾ Output Voltage Step |
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