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Sensores de temperatura analógicos

LMT90

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Sensor de temperatura de salida analógica positiva de +10,0 mV/°C de ganancia

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LMT90

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Detalles del producto

Local sensor accuracy (max) 4 Rating Catalog Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 10 Supply current (max) (µA) 130 Interface type Analog output Sensor gain (mV/°C) 10 Features Industry standard pinout
Local sensor accuracy (max) 4 Rating Catalog Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 10 Supply current (max) (µA) 130 Interface type Analog output Sensor gain (mV/°C) 10 Features Industry standard pinout
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Industry-Standard Sensor Gain/Offset:
    • 10mV/°C, 500mV at 0°C
    • Drop-in functional equivalent to LM50C
  • LMT90 Temperature Accuracy:
    • ±3°C (Max) at 25°C
    • ±4°C (Max) over −40°C to +125°C
  • Operating supply range: 4.5V to 10V
  • Quiescent Current (Typ): 95µA
  • Available in Standard SOT23-3 package
  • Nonlinearity: ±0.8°C (Max)
  • DC Output Impedance: 2kΩ/4kΩ (typ/Max)
    • Enables driving large capacitive loads
  • Cost-Effective Alternative to Thermistors
  • Industry-Standard Sensor Gain/Offset:
    • 10mV/°C, 500mV at 0°C
    • Drop-in functional equivalent to LM50C
  • LMT90 Temperature Accuracy:
    • ±3°C (Max) at 25°C
    • ±4°C (Max) over −40°C to +125°C
  • Operating supply range: 4.5V to 10V
  • Quiescent Current (Typ): 95µA
  • Available in Standard SOT23-3 package
  • Nonlinearity: ±0.8°C (Max)
  • DC Output Impedance: 2kΩ/4kΩ (typ/Max)
    • Enables driving large capacitive loads
  • Cost-Effective Alternative to Thermistors

The LMT90 device is a cost-optimized precision analog temperature sensor developed as a linear alternative to discrete thermistors. This device can measure temperatures from -40°C to 125°C using a single positive supply. The output voltage of the device is linearly proportional to temperature (10mV/°C) and has a DC offset of 500mV at 0°C. The offset allows reading negative temperatures without the need for a negative supply. The output voltage of the LMT90 ranges from 100mV (at –40°C) to 1.75V (at 125°C), simplifying analog-to-digital converter (ADC) interfacing.

The LMT90 is a drop-in equivalent to LM50C and does not require any external calibration, trimming or software linearization leading to simplifying the circuitry requirements in a single supply environment. Due to low quiescent current of LMT90 (typically around 95µA), self-heating is limited to a very low 0.2°C (in still air). This device is suitable for HVAC, appliance, and consumer electronics applications. Trimming and calibration of the LMT90 at the wafer level supports long-term availability, low cost and consistent accuracy (±3°C at 25°C, ±4°C over temperature range).

The LMT90 device is a cost-optimized precision analog temperature sensor developed as a linear alternative to discrete thermistors. This device can measure temperatures from -40°C to 125°C using a single positive supply. The output voltage of the device is linearly proportional to temperature (10mV/°C) and has a DC offset of 500mV at 0°C. The offset allows reading negative temperatures without the need for a negative supply. The output voltage of the LMT90 ranges from 100mV (at –40°C) to 1.75V (at 125°C), simplifying analog-to-digital converter (ADC) interfacing.

The LMT90 is a drop-in equivalent to LM50C and does not require any external calibration, trimming or software linearization leading to simplifying the circuitry requirements in a single supply environment. Due to low quiescent current of LMT90 (typically around 95µA), self-heating is limited to a very low 0.2°C (in still air). This device is suitable for HVAC, appliance, and consumer electronics applications. Trimming and calibration of the LMT90 at the wafer level supports long-term availability, low cost and consistent accuracy (±3°C at 25°C, ±4°C over temperature range).
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LM50 ACTIVO Sensor de temperatura con salida analógica de ±2 °C con ganancia de 10 mV/°C Higher accuracy (±2°C) with UL recognition
TMP235 ACTIVO Sensor de temperatura analógico de 1 °C y 10 mV/°C Higher accuracy (±1°C) in a 3-pin SOT-23 package or smaller 5-pin SOT-SC70 package
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ISOTMP35 ACTIVO Sensor de temperatura aislado básico de 1.2 °C con salida analógica de 10 mV/°C First-in-market integrated isolation with the same sensor gain (10 mV/°C). Higher accuracy (±1.2°C) and wider temperature range (-40 to 150°C).

Documentación técnica

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* Data sheet LMT90 Industry-Standard, ±3°C Accurate, Analog Centigrade (10mV/°C) Temperature Sensor in SOT-23 Package datasheet (Rev. C) PDF | HTML 20 may 2025
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
User guide LMT90 User Guide 31 ene 2013

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

LMT90EVM — Módulo de evaluación del sensor de temperatura LMT90EVM

The Texas Instruments LMT90EVM evaluation module (EVM) helps designers evaluate the operation and performance of the LMT90 analog temperature sensor.

Guía del usuario: PDF
No disponible en TI.com
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23 (DBZ) 3 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • 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
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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