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ADBMS1818ASWZ-R7 数据表(PDF) 35 Page - Analog Devices |
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ADBMS1818ASWZ-R7 数据表(HTML) 35 Page - Analog Devices |
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35 / 92 page  Data Sheet ADBMS1818 THEORY OF OPERATION analog.com Rev. B | 35 of 92 Table 27. ADC Path Redundancy Selection Measure PS, Bits[1:0] = 00 PS, Bits[1:0] = 01 PS, Bits[1:0] = 10 PS, Bits[1:0] = 11 Path Select Redundant Measure Path Select Redundant Measure Path Select Redundant Measure Path Select Redundant Measure Cells 1, 7, 13 ADC1 Cell 1 ADC1 Cell 1 ADC2 Cell 7 ADC3 Cell 13 Cells 2, 8, 14 ADC2 Cell 8 ADC1 Cell 2 ADC2 Cell 8 ADC3 Cell 14 Cells 3, 9, 15 ADC3 Cell 15 ADC1 Cell 3 ADC2 Cell 9 ADC3 Cell 15 Cells 4, 10, 16 ADC1 Cell 4 ADC1 Cell 4 ADC2 Cell 10 ADC3 Cell 16 Cells 5, 11, 17 ADC2 Cell 11 ADC1 Cell 5 ADC2 Cell 11 ADC3 Cell 17 Cells 6, 12, 18 ADC3 Cell 18 ADC1 Cell 6 ADC2 Cell 12 ADC3 Cell 18 Cell 7 (ADOL) ADC2 Cell 7 ADC1 Cell 7 ADC2 Cell 7 ADC3 N/A 1 Cell 13 (ADOL) ADC2 Cell 13 ADC1 N/A1 ADC2 Cell 13 ADC3 Cell 13 GPIO[n]2 ADC1 GPIO[n] ADC1 GPIO[n] ADC2 N/A1 ADC3 N/A1 2nd Reference2 ADC1 2nd Reference ADC1 2nd Reference ADC2 N/A1 ADC3 N/A1 SC2 ADC1 SC ADC1 SC ADC2 N/A1 ADC3 N/A1 ITMP2 ADC1 ITMP ADC1 ITMP ADC2 N/A1 ADC3 N/A1 VA2 ADC1 VA ADC1 VA ADC2 N/A1 ADC3 N/A1 VD 2 ADC1 VD ADC1 VD ADC2 N/A1 ADC3 N/A1 1 N/A means not applicable. 2 Note that the ADAX and ADSTAT commands are identical to the ADAXD and ADSTATD commands except that ADAX and ADSTAT do not apply any digital redundancy. Figure 60. Timing of ADCVSC Command Measuring All 19 Cells, SC Table 28. Conversion and Synchronization Times for ADCVSC Command in Different Modes Mode Conversion Times (μs) Synchronization Time (μs) t0 t1M t2M t3M t4M t5M t6M t7M t7C tSKEW 27 kHz 0 58 104 151 205 259 306 352 1331 147 14 kHz 0 87 163 238 321 404 480 556 1534 235 7 kHz 0 145 279 413 554 695 829 963 2756 409 3 kHz 0 261 512 762 1020 1277 1527 1778 3571 758 2 kHz 0 494 977 1460 1950 2441 2924 3407 5200 1456 1 kHz 0 960 1908 2857 3812 4768 5717 6665 8458 2853 422 Hz 0 1890 3770 5649 7536 9423 11,302 13,181 14,974 5645 26 Hz 0 29,818 59,624 89,431 119,245 149,059 178,866 208,672 234,902 89,427 |
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