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ADBMS1818ASWZ-R7 数据表(PDF) 25 Page - Analog Devices |
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ADBMS1818ASWZ-R7 数据表(HTML) 25 Page - Analog Devices |
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25 / 89 page  Data Sheet ADBMS1818 THEORY OF OPERATION analog.com Rev. 0 | 25 of 89 Table 18. ADC Range and Resolution Mode Full Range1 Specified Range Precision Range2 LSB Format Maximum Noise Noise Free Resolution3 26 Hz (Filtered) –0.8192 V to +5.7344 V 0 V to 5 V 0.5 V to 4.5 V 100 μV Unsigned 16 bits ±50 μV p-p 16 bits 1 Negative readings are rounded to 0 V. 2 Precision range is the range over which the noise is less than the maximum noise. 3 Noise free resolution is a measure of the noise level within the precision range. Figure 55. Timing for ADCV Command Measuring all 18 Cells Table 19. Conversion and Synchronization Times for ADCV Command Measuring All 18 Cells in Different Modes Mode Conversion Times (μs) Synchronization Time (μs) t0 t1M t2M t5M t6M t6C tSKEW2 27 kHz 0 58 104 244 291 1,121 233 14 kHz 0 87 163 390 466 1,296 379 7 kHz 0 145 279 681 815 2343 670 3 kHz 0 261 512 1263 1513 3041 1252 2 kHz 0 494 977 2426 2909 4437 2415 1 kHz 0 960 1,908 4753 5702 7230 4742 422 Hz 0 1890 3770 9408 11,287 12,816 9397 26 Hz 0 29,818 59,624 149,044 178,851 201,325 149,033 Figure 56. Timing for ADCV Command Measuring 3 Cells Table 20 shows the conversion time for the ADCV command measuring only 3 cells. t1C indicates the total conversion time for this command. Table 20. Conversion Times for ADCV Command Measuring 3 Cells in Different Modes Mode Conversion Times (μs) t0 t1M t1C 27 kHz 0 58 203 14 kHz 0 87 232 7 kHz 0 145 407 |
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