±2.5°C analog output temperature sensor, with -11.77mV/°C gain

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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 2.5 Operating temperature range (C) -55 to 130 Supply voltage (Min) (V) 2.4 Supply voltage (Max) (V) 5.5 Supply current (Max) (uA) 7 Interface type Analog output Sensor gain (mV/Deg C) -11.77 Rating Catalog Features Industry standard pinout open-in-new Find other Analog temperature sensors

Package | Pins | Size

SOT-SC70 (DCK) 5 4 mm² 2 x 2.1 open-in-new Find other Analog temperature sensors

Features

  • 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

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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. Therefore, self-heating is less than 0.02°C in still air. Shutdown capability for the LMT89 device 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 LMT89 device is a cost-competitive alternative to thermistors.

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Technical documentation

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Type Title Date
* Datasheet LMT89 2.4-V, 10-µA, SC70 Temperature Sensor datasheet (Rev. A) Jan. 31, 2015
Technical articles How to choose the right thermistor for your temperature sensing application Feb. 12, 2020
Technical articles How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical articles Driving industrial innovation with small-size sensors Sep. 12, 2019
Application notes SC Temp Sensors Challenge Precision RTDs and Thermistors in Build Automation (Rev. A) May 08, 2019
Technical articles How sensor technology is evolving to meet cold chain needs Jun. 18, 2018
More literature Analog Temperature Sensors Apr. 18, 2013
User guides LMT88-LMT89EVM User's Guide Feb. 06, 2013

Design & development

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Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The Texas Instruments LMT88-9EVM evaluation module (EVM) helps designers evaluate the operation and performance of the LMT88 and LMT87 analog temperature sensors.

Features
  • Evaluation board for variety of analog temperature sensor products
  • The board is user-friendly and has access to the temp sensor output pins
  • Reference designs

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    SC70 (DCK) 5 View options

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