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AD7798BRUZ-REEL Folha de dados(PDF) 11 Page - Analog Devices |
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AD7798BRUZ-REEL Folha de dados(HTML) 11 Page - Analog Devices |
11 / 28 page Data Sheet AD7798/AD7799 Rev. B | Page 11 of 28 AD7799 Table 7 shows the AD7799 output rms noise for some update rates and gain settings. The numbers given are for the bipolar input range with a 2.5 V reference. These numbers are typical and are generated with a differential input voltage of 0 V. Table 8 shows the effective resolution, and the output peak-to-peak resolution is given in parentheses. Note that the effective resolution is calculated using the rms noise, whereas the peak-to-peak resolution is based on peak-to-peak noise. The peak-to-peak resolution represents the resolution for which there is no code flicker. These numbers are typical and are rounded to the nearest LSB. Table 7. Output RMS Noise (µV) vs. Gain and Output Update Rate for the AD7799 Using a 2.5 V Reference Update Rate Gain of 1 Gain of 2 Gain of 4 Gain of 8 Gain of 16 Gain of 32 Gain of 64 Gain of 128 4.17 Hz 0.64 0.6 0.185 0.097 0.075 0.035 0.027 0.027 8.33 Hz 1.04 0.96 0.269 0.165 0.108 0.048 0.037 0.040 16.7 Hz 1.55 1.45 0.433 0.258 0.176 0.085 0.065 0.065 33.2 Hz 2.3 2.13 0.647 0.364 0.24 0.118 0.097 0.094 62 Hz 2.95 2.85 0.952 0.586 0.361 0.178 0.133 0.134 123 Hz 4.89 4.74 1.356 0.785 0.521 0.265 0.192 0.192 242 Hz 11.76 9.5 3.797 2.054 1.027 0.476 0.326 0.308 470 Hz 11.33 9.44 3.132 1.773 1.107 0.5 0.413 0.374 Table 8. Typical Resolution (Bits) vs. Gain and Output Update Rate for the AD7799 Using a 2.5 V Reference Update Rate Gain of 1 Gain of 2 Gain of 4 Gain of 8 Gain of 16 Gain of 32 Gain of 64 Gain of 128 4.17 Hz 23 (20.5) 22 (19.5) 22.5 (20) 22.5 (20) 22 (19.5) 22 (19.5) 21.5 (19) 20.5 (18) 8.33 Hz 22 (19.5) 21.5 (19) 22 (19.5) 22 (19.5) 21.5 (19) 21.5 (19) 21 (18.5) 20 (17.5) 16.7 Hz 21.5 (19) 20.5 (18) 21.5 (19) 21 (18.5) 21 (18.5) 21 (18.5) 20 (17.5) 19 (16.5) 33.3 Hz 21 (18.5) 20 (17.5) 21 (18.5) 20.5 (18) 20.5 (18) 20.5 (18) 19.5 (17) 18.5 (16) 62 Hz 20.5 (18) 19.5 (17) 20.5 (18) 20 (17.5) 19.5 (17) 19.5 (17) 19 (16.5) 18 (15.5) 123 Hz 20 (17.5) 19 (16.5) 20 (17.5) 19.5 (17) 19 (16.5) 19 (16.5) 18.5 (16) 17.5 (15) 242 Hz 18.5 (16) 18 (15.5) 18.5 (16) 18 (15.5) 18 (15.5) 18.5 (16) 18 (15.5) 17 (14.5) 470 Hz 18.5 (16) 18 (15.5) 18.5 (16) 18.5 (16) 18 (15.5) 18.5 (16) 17.5 (15) 16.5 (14) |
Nº de peça semelhante - AD7798BRUZ-REEL |
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Descrição semelhante - AD7798BRUZ-REEL |
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