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ADS1258 Datasheet(PDF) 11 Page - Texas Instruments |
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ADS1258 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 47 page www.ti.com Temperature ( _C) 210 200 190 180 170 160 150 140 −40 −20 120 40 0 20 60 80 100 Temperature Reading ( _C) 8 7 6 5 4 3 2 1 0 50 units from two production lots. T A = +25_ C Temperature ( _C) 18 17 16 15 14 −40 −20 120 100 0 20 80 60 40 Ratio ( µA/µA) 25 20 15 10 5 0 50 units from two production lots. Temperature ( _C) 10 8 6 4 2 0 1.0 0.8 0.6 0.4 0.2 0 −40 −20 120 0 20 40 60 80 100 AVDD, AVSS DVDD Master Clock (MHz) 20 16 12 8 4 0 20 16 12 8 4 0 0.1 1 100 10 DRATE[1:0] = 11 Noise Linearity ADS1258 SBAS297A – JUNE 2005 – REVISED SEPTEMBER 2005 TYPICAL CHARACTERISTICS (continued) At T A = +25°C, AVDD = +2.5V, AVSS = –2.5V, DVDD = +3.3V, fCLK = 16MHz (external), OPA227 buffer between MUX outputs and ADC inputs, VREFP = +2.048V, and VREFN = –2.048V, unless otherwise noted. TEMPERATURE SENSOR VOLTAGE vs TEMPERATURE TEMPERATURE SENSOR READING HISTOGRAM Figure 27. Figure 28. SENSOR BIAS CURRENT SOURCE RATIO SENSOR BIAS CURRENT SOURCE RATIO HISTOGRAM vs TEMPERATURE Figure 29. Figure 30. SUPPLY CURRENT vs TEMPERATURE NOISE AND INL vs MASTER CLOCK Figure 31. Figure 32. 11 |
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