LM90CIMMX National Semiconductor, LM90CIMMX Datasheet - Page 18

• Manufacturer Part Number: LM90CIMMX
• Manufacturer: National Semiconductor

Specifications of LM90CIMMX

• Temperature Sensor Function: Temp Sensor
• Interface Type: Serial (2-Wire)
• Output Type: Digital
• Package Type: MSOP
• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / Rohs Status: Not Compliant

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4.0 Application Hints
Temperature errors associated with non-ideality may be re-
duced in a specific temperature range of concern through
use of the offset registers (11h and 12h). Figure 14 shows
how the offset register may be used to compensate for the
non-ideality errors shown in Figure 13 . For the case of
non-ideality=1.008, the offset register was set to −0.5˚C
resulting in the calculated residual error as shown in Figure
Error Caused by Non-Ideality Factor
FIGURE 12.
Compensating for an Untargeted Non-Ideality Factor
(Continued)
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FIGURE 14.
18
14 . This offset has resulted in an error of less than 0.05˚C for
the temperatures measured in the critical range between 60
to 100˚C. This method yeilds a first order correction factor.
Please send an email to hardware.monitor.team
requesting further information on our recommended setting
of the offset register for different processor types.
Errors Induced when Temperature Sensor is Not
Calibrated to Typical Non-Ideality
20033738
FIGURE 13.
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