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ADS1258IPHPREP датащи(PDF) 13 Page - Texas Instruments |
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ADS1258IPHPREP датащи(HTML) 13 Page - Texas Instruments |
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13 / 57 page ![]() Temperature ( _C) 30 20 10 0 −10 −40 −20 100 0 20 80 60 40 Gain Drift (ppm/ _C) 80 60 40 20 0 50 units from two production lots. Based on 20 _C intervals over the range of −40_C to +105_C. V REF (V) 20 15 10 5 0 −5 −10 −15 −20 0.5 1.0 5.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Time After Power−On (s) 10 8 6 4 2 0 −2 −4 −6 −8 −10 0 10 60 20 30 40 50 Free−Air V REF (V) 10 8 6 4 2 0 0.5 1.0 5.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 V IN (V) −5 −4 10 8 6 4 2 0 −2 −4 −6 −8 −10 5 −3 −2 −1 0 1 2 3 4 V REF = 5V T A = − 40_ C, −10_ C, +25_ C, +55_ C, +85_ C, +105_ C ADS1258-EP www.ti.com SBAS445C – MARCH 2009 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS (continued) At TA = +25°C, AVDD = +2.5V, AVSS = –2.5V, DVDD = +3.3V, fCLK = 16MHz (external clock) or fCLK = 15.729MHz (internal clock), OPA227 buffer between MUX outputs and ADC inputs, VREFP = +2.048V, and VREFN = –2.048V, unless otherwise noted. GAIN DRIFT HISTOGRAM GAIN ERROR vs TEMPERATURE Figure 20. Figure 21. GAIN ERROR vs VREF GAIN ERROR POWER-ON WARMUP Figure 22. Figure 23. INTEGRAL NONLINEARITY vs VREF INTEGRAL NONLINEARITY vs INPUT LEVEL Figure 24. Figure 25. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 13 Product Folder Link(s): ADS1258-EP |
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