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1 Features

1? Cost-Effective Alternative to Thermistors

? Rated for Full ?55°C to 130°C Range

? Available in an SC70 Package

? Predictable Curvature Error

? Suitable for Remote Applications

2 Applications

? Industrial

? HVAC

? Disk Drives

? Automotive

? Portable Medical Instruments

? Computers

? Battery Management

? Printers

? Power Supply Modules

? FAX Machines

? Mobile Phones

? Automotive

3 Description

The LMT88 device is a precision analog output

CMOS integrated-circuit temperature sensor that operates over a temperature range of ?55°C to

130°C . The power supply operating range is 2.4 V to

5.5 V. The transfer function of LMT88 is

predominately linear, yet has a slight predictable parabolic curvature. The accuracy of the LMT88

when specified to a parabolic transfer function is typically ±1.5°C at an ambient temperature of 30°C.

The temperature error increases linearly and reaches

a maximum of ±2.5°C at the temperature range

extremes. The temperature range is affected by the

power supply voltage. At a power supply voltage of

2.7 V to 5.5 V, the temperature range extremes are

130°C and ?55°C. Decreasing the power supply

voltage to 2.4 V changes the negative extreme to ?30°C, while the positive remains at 130°C.

The LMT88 quiescent current is less than 10 μA. Therefore, self-heating is less than 0.02°C in still air.

Shutdown capability for the LMT88 is intrinsic

because its inherent low power consumption allows it

to be powered directly from the output of many logic gates or does not necessitate shutdown at all.

The LMT88 is a cost-competitive alternative to

thermistors.