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ISL71590SEHVF Datasheet(PDF) 10 Page - Intersil Corporation |
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ISL71590SEHVF Datasheet(HTML) 10 Page - Intersil Corporation |
10 / 16 page ISL71590SEH 10 June 3, 2016 FN8376.2 Submit Document Feedback Typical Applications The following section of the datasheet illustrates several application ideas, touching on each with a short explanation. There is an evaluation board ISL71590SEHEV1Z and accompanying user guide “ISL71590SEH Evaluation Board User’s Guide” that details 4 of the more fundamental implementations of this device. The sum of the ISL71590SEH currents appears across R, which represents the average temperature in the sensor array (see Figure 31). FIGURE 26. TRIM TWO: SLOPE FIGURE 27. TRIM THREE: OFFSET AGAIN Trimming Out Errors (Continued) T (K) T (K) FIGURE 28. TYPICAL APPLICATION FIGURE 29. SIMPLE CONNECTION. OUTPUT IS PROPORTIONAL TO ABSOLUTE TEMPERATURE + - ISL71590SEH 1kΩ +5V VOUT = 1mV/K T 423.0 298.2 218.0 218K 298.2K 423K (-55°C) (+25°C) (+150°C) TEMPERATURE FIGURE 30. LOWEST TEMPERATURE SENSING SCHEME. OUTPUT CURRENT IS THAT OF THE “ COLDEST” SENSOR FIGURE 31. AVERAGE TEMPERATURE SENSING SCHEME VS = +14V 1kΩ + ISL71590SEH - VOUT = 1mV/K + - + - 0.1% Maximum number = (VSmin - VOUTmax)/4V T T T VS = +12V + - + - + - VOUT = (Io1+Io2 - +Ion) . R e.g., with 4 sensors and R = 250Ω VOUT = 1mV/K) 1 R n Where n = number of ISL71590SEH 2 T T T n |
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