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Sensores de temperatura analógicos

LMT89

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Sensor de temperatura de salida analógica de ±2.5 °C, con ganancia de –11.77 mV/°C

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LMT89

ACTIVO
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Detalles del producto

Local sensor accuracy (max) 2.5 Operating temperature range (°C) -55 to 130 Supply voltage (min) (V) 2.4 Supply voltage (max) (V) 5.5 Supply current (max) (µA) 7 Interface type Analog output Sensor gain (mV/°C) -11.77 Rating Catalog Features Industry standard pinout
Local sensor accuracy (max) 2.5 Operating temperature range (°C) -55 to 130 Supply voltage (min) (V) 2.4 Supply voltage (max) (V) 5.5 Supply current (max) (µA) 7 Interface type Analog output Sensor gain (mV/°C) -11.77 Rating Catalog Features Industry standard pinout
SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • 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

All trademarks are the property of their respective owners. All trademarks are the property of their respective owners.

  • 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

All trademarks are the property of their respective owners. All trademarks are the property of their respective owners.

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.

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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LM20 ACTIVO Sensor de temperatura de salida analógica de ±1.5 °C Higher accuracy (±1.5°C) in a 5-pin SOT-SC70 package or smaller 4-pin DSBGA package
LMT88 ACTIVO Sensor de temperatura de salida analógica de ±4 °C, con ganancia de –11.77 mV/°C Lower accuracy (±4°C) pin-to-pin alternative, for cost-optimized designs.
TMP20 ACTIVO Sensor de temperatura de salida analógica 5-pin SOT-SC70 package or smaller 6-pin SOT-563 package.

Documentación técnica

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* Data sheet LMT89 2.4-V, 10-µA, SC70 Temperature Sensor datasheet (Rev. A) PDF | HTML 31 ene 2015
Application note SC Temp Sensors Challenge Precision RTDs and Thermistors in Build Automation (Rev. A) 08 may 2019
More literature Analog Temperature Sensors 18 abr 2013
EVM User's guide LMT88-LMT89EVM User's Guide 06 feb 2013

Diseño y desarrollo

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Placa de evaluación

LMT88-9EVM — Sensor de temperatura EVM LMT88 y LMT89

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

Guía del usuario: PDF
No disponible en TI.com
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
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Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

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  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
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