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AD7190 Arkusz danych(PDF) 11 Page - Analog Devices |
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AD7190 Arkusz danych(HTML) 11 Page - Analog Devices |
11 / 21 page Preliminary Technical Data AD7190 Rev.PrD 7/08 | Page 11 CHOP ENABLED Table 7 shows the AD7190’s rms noise for some of the update rates and gain settings. The numbers given are for the bipolar input range with an external 5 V reference. These numbers are typical and are generated with a differential input voltage of 0 V. Table 8 shows the effective resolution, while the output peak-to- peak (p-p) resolution is listed in brackets. It is important to note that the effective resolution is calculated using the rms noise, while the p-p resolution is calculated based on peak-to-peak noise. The p-p resolution represents the resolution for which there will be no code flicker. These numbers are typical and are rounded to the nearest half-LSB. Table 7. RMS Noise (nV) vs. Gain and Output Update Rate (continuous conversion mode) Using a 5 V Reference - Chop Enabled Filter Word (Decimal) Update Rate (Hz) Gain of 1 Gain of 8 Gain of 16 Gain of 32 Gain of 64 Gain of 128 1023 1.175 123 17.47 8.94 7.07 5.87 5 640 1.875 138 21.41 10.27 8.68 7.33 7.07 480 2.5 174 26.87 13.67 10 8.49 7.25 96 12.5 395 61.52 31.11 25.22 19.64 17.9 16 75 950 132 74.25 51.5 48.49 37.24 2 600 3008 412 228 164 141 118 1 1200 9192 1255 636 479 351 266 Table 8. Typical Resolution (Bits) vs. Gain and Output Update Rate (continuous conversion mode) Using a 5 V Reference - Chop Enabled Filter Word (Decimal) Update Rate (Hz) Gain of 1 Gain of 8 Gain of 16 Gain of 32 Gain of 64 Gain of 128 1023 1.175 24 (23.5) 24 (23.5) 24 (23.5) 24 (22.5) 24 (22) 24 (21.5) 640 1.875 24 (23.5) 24 (23) 24 (23) 24 (22.5) 24 (21.5) 23.5 (21) 480 2.5 24 (23) 24 (22.5) 24 (22.5) 24 (22) 24 (21.5) 23 (20.5) 96 12.5 24 (22) 24 (21.5) 24 (21.5) 23.5 (21) 23 (20.5) 22 (19.5) 16 75 23.5 (21) 23 (20.5) 23 (20.5) 22.5 (20) 21.5 (19) 21 (18.5) 2 600 21.5 (19) 21.5 (19) 21.5 (19) 21 (18.5) 20 (17.5) 19.5 (17) 1 1200 20 (17.5) 20 (17.5) 20 (17.5) 19.5 (17) 18.5 (16) 18 (15.5) |
Podobny numer części - AD7190 |
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Podobny opis - AD7190 |
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