LM45CIM3X National Semiconductor, LM45CIM3X Datasheet
LM45CIM3X
Specifications of LM45CIM3X
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LM45CIM3X Summary of contents
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... The LM45 is rated to operate over a −20˚ to +100˚C temperature range. Connection Diagram Order Number LM45BIM3 LM45BIM3X LM45CIM3 LM45CIM3X © 2005 National Semiconductor Corporation Applications n Battery Management n FAX Machines n Printers n Portable Medical Instruments ± 3˚C over a full −20 to ...
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... Choose R = −V /50 µ (10 mV/˚C x Temp ˚C) OUT V = +1,000 mV at +100˚C OUT = +250 mV at +25˚C = −200 mV at −20˚C www.national.com 01175403 FIGURE 1. Basic Centigrade Temperature Sensor (+2.5˚C to +100˚C) 01175404 FIGURE 2. Full-Range Centigrade Temperature Sensor (−20˚C to +100˚C) 2 ...
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... Note 9: Quiescent current is measured using the circuit of Figure 1. Note 10: For best long-term stability, any precision circuit will give best results if the unit is aged at a warm temperature, and/or temperature cycled for at least 46 hours before long-term life test begins. This is especially true when a small (Surface-Mount) part is wave-soldered; allow time for stress relaxation to occur. ...
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... Thermal Response in Still Air with Heat Sink (Figure 3) Start-Up Voltage vs Temperature www.national.com To generate these curves the LM45 was mounted to a printed Thermal Time Constant 01175424 01175426 01175428 4 01175425 Thermal Response in Stirred Oil Bath with Heat Sink 01175427 Quiescent Current vs Temperature (In Circuit of Figure 1) 01175429 ...
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... Typical Performance Characteristics circuit board as shown in Figure 3. (Continued) Quiescent Current vs Temperature (In Circuit of Figure 2) Noise Voltage Start-Up Response To generate these curves the LM45 was mounted to a printed Accuracy vs Temperature 01175430 01175432 01175434 5 (Guaranteed) 01175431 Supply Voltage vs Supply Current 01175433 www.national.com ...
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... This presumes that the ambient air temperature is almost the same as the surface temperature; if the air temperature were much higher or lower than the surface temperature, the actual temperature of the LM45 die would interme- diate temperature between the surface temperature and the air temperature. ...
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... Figure 5, are often useful. FIGURE 4. LM45 with Decoupling from Capacitive Load FIGURE 5. LM45 with R-C Damper 01175412 FIGURE 6. Temperature Sensor, Single Supply, −20˚C to +100˚C FIGURE 7. 4-to-20 mA Current Source (0˚C to +100˚C) 01175408 01175409 FIGURE 8 ...
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... Typical Applications FIGURE 11. Temperature To Digital Converter (Serial Output) (+128˚C Full Scale) FIGURE 12. Temperature To Digital Converter (Parallel TRI-STATE Standard Data Bus to µP Interface) (128˚C Full Scale) www.national.com (Continued) FIGURE 10. Expanded Scale Thermometer (50˚ to 80˚ Fahrenheit, for Example Shown) 8 01175417 ...
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... R for V =3.075V B B -Trim R for V =1.955V C C -Trim R for V =0.075V + 100mV/˚ ambient -Example, V =2.275V at 22˚C A FIGURE 13. Bar-Graph Temperature Display (Dot Mode) FIGURE 14. LM45 With Voltage-To-Frequency Converter And Isolated Output (2.5˚C to +100˚ 1000 Hz) 9 01175420 01175421 www.national.com ...
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Block Diagram www.national.com 01175422 10 ...
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... SOT-23 Molded Small Outline Transistor Package (M3) Order Number LM45BIM3, LM45BIM3X, LM45CIM3 or LM45CIM3X National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. ...