LMT89

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LMT89 SNIS176A – MARCH 2013 – REVISED JANUARY 2015 LMT89 2.4-V, 10-µA, SC70 Temperature Sensor 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 Automotive Disk Drives Portable Medical Instruments Computers Battery Management Printers Power Supply Modules FAX Machines Mobile Phones Automotive 3 Description The LMT89 device is a precision analog output CMOS integrated-circuit temperature sensor that operates over a −55°C to 130°C temperature range. The power supply operating range is 2.4 V to 5.5 V. The transfer function of LMT89 device is predominately linear, yet has a slight predictable parabolic curvature. The accuracy of the LMT89 device, 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 quiescent current of the LMT89 device is less than 10 μA. Therefo...