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.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LMT88 2.4-V, 10-µA, SC-70 Temperature Sensor datasheet (Rev. A) | PDF | HTML | Jan 31, 2015 |
| Application note | SC Temp Sensors Challenge Precision RTDs and Thermistors in Build Automation (Rev. A) | May 8, 2019 | ||
| Technical article | It may be small, but it’s powerful | PDF | HTML | Oct 27, 2016 | |
| More literature | Analog Temperature Sensors | Apr 18, 2013 |
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The Texas Instruments LMT88-9EVM evaluation module (EVM) helps designers evaluate the operation and performance of the LMT88 and LMT87 analog temperature sensors.
This reference design is a 650-W inverter power stage designed for low-frequency (transformer-based), single-phase UPS operating from a 12-V battery. The design enables low form factor and high-efficiency implementation, taking advantage of the TI SMD MOSFET in a SON5x6 package with very low R (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOT-SC70 (DCK) | 5 | Ultra Librarian |
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