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Sensores de temperatura digitales

LM95241

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Sensor de temperatura local y remoto doble de ±1.25 °C con compensación beta e interfaz SMBus, I2

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LM95241

ACTIVO
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Detalles del producto

Local sensor accuracy (max) 3 Type Remote Operating temperature range (°C) 0 to 85 Supply voltage (min) (V) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion Supply current (max) (µA) 640 Temp resolution (max) (Bits) 10 Remote channels (#) 2 Addresses 3 Rating Catalog
Local sensor accuracy (max) 3 Type Remote Operating temperature range (°C) 0 to 85 Supply voltage (min) (V) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion Supply current (max) (µA) 640 Temp resolution (max) (Bits) 10 Remote channels (#) 2 Addresses 3 Rating Catalog
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Accurately Senses Die Temperature of Remote ICs or Diode Junctions
  • Uses TruTherm Technology for Precision “Thermal Diode” Temperature Measurement
  • Thermal Diode Input Stage with Analog Filtering
  • Thermal Diode Digital Filtering
  • Intel Processor on 65nm or 90nm Process or 2N3904 Non-Ideality Selection
  • Remote Diode Fault Detection
  • On-board Local Temperature Sensing
  • Remote Temperature Readings Without Digital Filtering:
    • 0.125 °C LSb
    • 10-bits Plus Sign or 11-bits Programmable Resolution
    • 11-bits Resolves Temperatures Above
      127 °C
  • Remote Temperature Readings with Digital Filtering:
    • 0.03125 °C LSb with Filtering
    • 12-bits Plus Sign or 13-bits Programmable Resolution
    • 13-bits Resolves Temperatures Above
      127 °C
  • Local Temperature Readings:
    • 0.25 °C
    • 9-bits Plus Sign
  • Status Register Support
  • Programmable Conversion Rate Allows User Optimization of Power Consumption
  • Shutdown Mode One-shot Conversion Control
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • 8-pin VSSOP Package

Key Specifications

  • Remote Diode Temperature Accuracy
    • TA = 20°C to 40°C, TD = 45°C to 85°C ±1.25 °C (Max)
    • TA = 0°C to 85°C, TD = 25°C to 140°C ±2.5 °C (Max)
  • Local Temperature Accuracy
    • TA = 0°C to 85°C ±3.0 °C (Max)
  • Supply Voltage 3.0 V to 3.6 V
  • Average Supply Current 471 μA (Typ)

All trademarks are the property of their respective owners.

  • Accurately Senses Die Temperature of Remote ICs or Diode Junctions
  • Uses TruTherm Technology for Precision “Thermal Diode” Temperature Measurement
  • Thermal Diode Input Stage with Analog Filtering
  • Thermal Diode Digital Filtering
  • Intel Processor on 65nm or 90nm Process or 2N3904 Non-Ideality Selection
  • Remote Diode Fault Detection
  • On-board Local Temperature Sensing
  • Remote Temperature Readings Without Digital Filtering:
    • 0.125 °C LSb
    • 10-bits Plus Sign or 11-bits Programmable Resolution
    • 11-bits Resolves Temperatures Above
      127 °C
  • Remote Temperature Readings with Digital Filtering:
    • 0.03125 °C LSb with Filtering
    • 12-bits Plus Sign or 13-bits Programmable Resolution
    • 13-bits Resolves Temperatures Above
      127 °C
  • Local Temperature Readings:
    • 0.25 °C
    • 9-bits Plus Sign
  • Status Register Support
  • Programmable Conversion Rate Allows User Optimization of Power Consumption
  • Shutdown Mode One-shot Conversion Control
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • 8-pin VSSOP Package

Key Specifications

  • Remote Diode Temperature Accuracy
    • TA = 20°C to 40°C, TD = 45°C to 85°C ±1.25 °C (Max)
    • TA = 0°C to 85°C, TD = 25°C to 140°C ±2.5 °C (Max)
  • Local Temperature Accuracy
    • TA = 0°C to 85°C ±3.0 °C (Max)
  • Supply Voltage 3.0 V to 3.6 V
  • Average Supply Current 471 μA (Typ)

All trademarks are the property of their respective owners.

The LM95241 is a precision dual remote diode temperature sensor (RDTS) that uses TI's TruTherm technology. The 2-wire serial interface of the LM95241 is compatible with SMBus 2.0. The LM95241 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The LM95241 includes digital filtering and an advanced input stage that includes analog filtering and TruTherm technology that reduces processor-to-processor non-ideality spread. The diode connected transistors can be a “thermal diode” as found in Intel and AMD processors or can simply be a diode connected MMBT3904 transistor. TruTherm technology allows accurate measurement of “thermal diodes” found on small geometry processes such as 90nm and 65nm. The LM95241 supports user selectable thermal diode non-ideality of either Intel processor on 90nm or 65nm process or 2N3904.

The LM95241 resolution format for remote temperature readings can be programmed to be 11-bits signed or unsigned with the digital filtering disabled. When the filtering is enabled the resolution increases to 13-bits signed or unsigned. In the unsigned mode the LM95241 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.

The LM95241 is a precision dual remote diode temperature sensor (RDTS) that uses TI's TruTherm technology. The 2-wire serial interface of the LM95241 is compatible with SMBus 2.0. The LM95241 can sense three temperature zones, it can measure the temperature of its own die as well as two diode connected transistors. The LM95241 includes digital filtering and an advanced input stage that includes analog filtering and TruTherm technology that reduces processor-to-processor non-ideality spread. The diode connected transistors can be a “thermal diode” as found in Intel and AMD processors or can simply be a diode connected MMBT3904 transistor. TruTherm technology allows accurate measurement of “thermal diodes” found on small geometry processes such as 90nm and 65nm. The LM95241 supports user selectable thermal diode non-ideality of either Intel processor on 90nm or 65nm process or 2N3904.

The LM95241 resolution format for remote temperature readings can be programmed to be 11-bits signed or unsigned with the digital filtering disabled. When the filtering is enabled the resolution increases to 13-bits signed or unsigned. In the unsigned mode the LM95241 remote diode readings can resolve temperatures above 127°C. Local temperature readings have a resolution of 9-bits plus sign.
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Documentación técnica

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* Data sheet LM95241 Dual Remote Diode Temp Sensor w/SMBus Interface & TruTherm Technology datasheet (Rev. E) 22 mar 2013

Diseño y desarrollo

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Controlador o biblioteca

LM95241SW-LINUX — Controlador Linux para LM95241

The Linux driver supports the LM95241 series of Dual Remote and Local Temp Sensors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported (...)
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Soporte de software

SENSOREVAL — Eval Board Software For Hardware Monitors And Digital Temperature Sensors

SensorEval
SensorEval software supports the latest TI temperature sensor and hardware monitor evaluation boards via USB interface. It also allows access to sensors mounted directly on motherboards that support Intel chip sets.

  • Download SensorEval Software and Manual
  • Windows XP support is offered for (...)
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Sensores de temperatura digitales
LM63 — 1 sensor de temperatura local y remoto con control de ventilador LM64 — 1 sensor de temperatura local y remoto con control de ventilador y 5 GPIO LM71 — Sensor de temperatura de ±1.5 °C con interfaz SPI LM71-Q1 — Sensor de temperatura de ±1.5 °C con interfaz SPI de calidad automotriz LM73 — Sensor de temperatura de ±1 °C con interfaz I2C/SMBus LM75A — Sensor de temperatura estándar de la industria de 2 °C con interfaz I2C/SMBus LM86 — Sensor de temperatura local y remota de ±0.75 °C con interfaz SMBus LM89 — Sensor de temperatura local y remoto de ±0.75 °C con interfaz SMBus y 2 direcciones para compartir e LM90 — Sensor de temperatura local y remoto con interfaz SMBus LM93 — Un sensor de temperatura local, 2 remotos con monitor de hardware y 16 monitores de tensión de fuent LM95010 — Sensor de temperatura de ±2 °C con interfaz SensorPath LM95071 — Sensor de temperatura de ±1 °C con interfaz SPI LM95172-Q1 — Sensor de temperatura de ±1 °C de calidad automotriz con capacidad para 200 °C e interfaz SPI LM95214 — Sensor de temperatura local y remoto cuádruple de ±2 °C con interfaz SMBus LM95221 — Sensor de temperatura local y remoto doble de 3 °C con compensación beta e interfaz SMBus, I2C LM95231 — Sensor de temperatura local y remoto doble con tecnología TruTherm e interfaz SMBus LM95233 — Sensor de temperatura local y remoto doble de ±2 °C con tecnología TruTherm e interfaz SMBus LM95234 — Sensor de temperatura local y remoto cuádruple de ±2 °C con tecnología TruTherm e interfaz SMBus LM95235 — Sensor de temperatura local y remoto de ±0.75 °C con SMBus y compensación beta para diodo de 65/9 LM95235-Q1 — Sensor de temperatura local y remoto de ±2 °C con tecnología TruTherm y SMBus de calidad automotriz LM95241 — Sensor de temperatura local y remoto doble de ±1.25 °C con compensación beta e interfaz SMBus, I2 LM95245 — Sensor de temperatura local y remoto de ±0.75 °C con SMBus y compensación beta para diodo de 45 n LM96000 — Monitor de hardware con control de ventilador y 6 monitores de tensión de fuente de alimentación LM96080 — Un sensor de temperatura local con velocidad del ventilador y monitor de tensión de alimentación LM96163 — Un sensor de temperatura local y remoto con compensación beta y control de ventilador LM99 — Sensor de temperatura local y remoto con tecnología TruTherm e interfaz SMBus
ADC de precisión
ADC128D818 — ADC Delta-Sigma de 12 bits, 82 SPS, 8 canales con sensor de temperatura, referencia de tensión INT/E
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VSSOP (DGK) 8 Ver opciones
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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
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  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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