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Sensores de temperatura analógicos

LM94022

ACTIVO

Sensor de temperatura de ±1.5 °C con salida analógica de Clase AB y ganancia múltiple

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LM94022

ACTIVO
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Detalles del producto

Local sensor accuracy (max) 1.5 Rating Catalog Operating temperature range (°C) -50 to 150 Supply current (max) (µA) 8.1 Interface type Analog output Sensor gain (mV/°C) -13.6, -10.9, -8.2, -5.5 Features Selectable gain setting, UL recognized
Local sensor accuracy (max) 1.5 Rating Catalog Operating temperature range (°C) -50 to 150 Supply current (max) (µA) 8.1 Interface type Analog output Sensor gain (mV/°C) -13.6, -10.9, -8.2, -5.5 Features Selectable gain setting, UL recognized
SOT-SC70 (DCK) 5 4.2 mm² (2 mm × 2.1 mm)
  • LM94022/-Q1 is AEC-Q100 Grade 0 qualified and
    is Manufactured on an Automotive Grade Flow
  • Low 1.5-V to 5.5-V Operation With Low 5.4-µA
    Supply Current
  • Push-Pull Output With ±50-µA Source Current Capability
  • Four Selectable Gains
  • Very Accurate Over Wide Temperature Range of
    −50°C to +150°C:
    • ±1.5ºC Temperature Accuracy for 20ºC to
      40ºC Range
    • ±1.8ºC Temperature Accuracy for –50ºC to
      70ºC Range
    • ±2.1ºC Temperature Accuracy for –50ºC to
      90ºC Range
    • ±2.7ºC Temperature Accuracy for –50ºC to
      150ºC Range
  • Output is Short-Circuit Protected
  • Extremely Small SC70 Package
  • For the Similar Functionality in a TO-92 Package,
    See LMT84, LMT85, LMT86, or LMT87
  • Footprint Compatible With the Industry-Standard
    LM20 Temperature Sensor
  • LM94022/-Q1 is AEC-Q100 Grade 0 qualified and
    is Manufactured on an Automotive Grade Flow
  • Low 1.5-V to 5.5-V Operation With Low 5.4-µA
    Supply Current
  • Push-Pull Output With ±50-µA Source Current Capability
  • Four Selectable Gains
  • Very Accurate Over Wide Temperature Range of
    −50°C to +150°C:
    • ±1.5ºC Temperature Accuracy for 20ºC to
      40ºC Range
    • ±1.8ºC Temperature Accuracy for –50ºC to
      70ºC Range
    • ±2.1ºC Temperature Accuracy for –50ºC to
      90ºC Range
    • ±2.7ºC Temperature Accuracy for –50ºC to
      150ºC Range
  • Output is Short-Circuit Protected
  • Extremely Small SC70 Package
  • For the Similar Functionality in a TO-92 Package,
    See LMT84, LMT85, LMT86, or LMT87
  • Footprint Compatible With the Industry-Standard
    LM20 Temperature Sensor

The LM94022/-Q1 device is a precision analog output CMOS integrated-circuit temperature sensor with selectable linear negative temperature coefficient (NTC). A class-AB output structure gives the LM94022/-Q1 strong output source and sink current capability for driving heavy transient loads such as that presented by the input of a sample-and-hold analog-to-digital converter. The low 5.4-µA supply current and 1.5-V operating voltage of the LM94022/-Q1 make it ideal for battery-powered systems as well as general temperature-sensing applications.

The Gain Select 1 (GS1) and Gain Select 0 (GS0) logic inputs select one of four gains for the temperature-to-voltage output transfer function: −5.5 mV/°C, −8.2 mV/°C, −10.9 mV/°C, and −13.6 mV/°C. Selecting –5.5 mV/°C (GS1 and GS0 both tied low), allows the LM94022/-Q1 to operate down to 1.5-V supply while measuring temperature over the full range of −50°C to +150°C. Maximum temperature sensitivity, –13.6 mV/°C, is selected when GS1 and GS0 are both tied high. The gain-select inputs can be tied directly to VDD or Ground without any pullup or pulldown resistors, reducing component count and board area. These inputs can also be driven by logic signals allowing the system to optimize the gain during operation or system diagnostics.

The LM94022/-Q1 device is a precision analog output CMOS integrated-circuit temperature sensor with selectable linear negative temperature coefficient (NTC). A class-AB output structure gives the LM94022/-Q1 strong output source and sink current capability for driving heavy transient loads such as that presented by the input of a sample-and-hold analog-to-digital converter. The low 5.4-µA supply current and 1.5-V operating voltage of the LM94022/-Q1 make it ideal for battery-powered systems as well as general temperature-sensing applications.

The Gain Select 1 (GS1) and Gain Select 0 (GS0) logic inputs select one of four gains for the temperature-to-voltage output transfer function: −5.5 mV/°C, −8.2 mV/°C, −10.9 mV/°C, and −13.6 mV/°C. Selecting –5.5 mV/°C (GS1 and GS0 both tied low), allows the LM94022/-Q1 to operate down to 1.5-V supply while measuring temperature over the full range of −50°C to +150°C. Maximum temperature sensitivity, –13.6 mV/°C, is selected when GS1 and GS0 are both tied high. The gain-select inputs can be tied directly to VDD or Ground without any pullup or pulldown resistors, reducing component count and board area. These inputs can also be driven by logic signals allowing the system to optimize the gain during operation or system diagnostics.
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LM94022-Q1 ACTIVO Sensor de temperatura de ±1.5 °C con salida analógica de Clase AB y ganancia múltiple de calidad aut Automotive qualified version
Pin por pin con la misma funcionalidad que el dispositivo comparado
LMT84-Q1 ACTIVO Sensor de temperatura, con capacidad de 1,5 V y salida analógica de 10 uA de grado automotriz Fixed sensor gain (-5.5 mV/°C) with lower accuracy (±2.7°C) and similar pinout
LMT85-Q1 ACTIVO Sensor de temperatura de salida analógica, con capacidad de 1,8 V, 10 uA de grado automotriz Fixed sensor gain (-8.2 mV/°C) with lower accuracy (±2.7°C) and similar pinout
LMT86-Q1 ACTIVO Sensor de temperatura de salida analógica, con capacidad de 2,2 V, 10 uA de grado automotriz Fixed sensor gain (-10.9 mV/°C) with lower accuracy (±2.7°C) and similar pinout
LMT87-Q1 ACTIVO Sensor de temperatura automotriz de salida analógica de ±2,7 °C de 2,7V a 5,5 V con ganancia de -13, Fixed sensor gain (-13.6 mV/°C) with lower accuracy (±2.7°C) and similar pinout
LM94021 ACTIVO Sensor de temperatura de ±1.5 °C con opciones de salida analógica de ganancia múltiple Equivalent pin-compatible version with lower output source current capability (≤ 2µA)

Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM94022/-Q1 1.5-V, SC70, Multi-Gain Analog Temperature Sensor With Class-AB Output datasheet (Rev. F) PDF | HTML 29/09/2015
Certificado UL Certification 20141125-E232195 Vol 1 Sec 7 PDF | HTML 17/11/2023
Guía del usuario WEBENCH® Sensor Designer Thermocouple Sensor Ver 1 PCB (unpopulated) User Guide 27/01/2012
Guía de diseño LM94021 LM94022 LM94023 Design Aid (Rev. A) 26/01/2012
Informe Temperature sensor solutions for low-voltage systems 11/05/2005

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

LM9402XEVM — Módulo de evaluación para sensor de temperatura analógico de ganancia múltiple

The Texas Instruments LM9402xEVM evaluation module helps designers evaluate the operation and performance of the LM94021, LM94022, and LM94023 analog temperature sensors.

Guía del usuario: PDF
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