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ADS1258IPHPREP датащи(PDF) 11 Page - Texas Instruments |
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ADS1258IPHPREP датащи(HTML) 11 Page - Texas Instruments |
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11 / 57 page ![]() Temperature ( _C) 20 18 16 14 12 10 8 6 4 −40 −20 0 20 40 60 80 100 DRATE[1:0] = 11 Common−Mode Input Voltage (V) 20 15 10 5 0 5 0 −5 −10 −15 −3 −2 3 −1 0 1 2 OFFSET CHOP = 1 OFFSET CHOP = 0 NOISE Offset ( µV) 200 180 160 140 120 100 80 60 40 20 0 311 units from one production lot. CHOP = 1 Offset Drift ( µV/_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. CHOP = 1 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. NOISE AND OFFSET vs NOISE vs TEMPERATURE COMMON-MODE INPUT VOLTAGE Figure 12. Figure 13. OFFSET HISTOGRAM OFFSET DRIFT HISTOGRAM Figure 14. Figure 15. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Link(s): ADS1258-EP |
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