LM95245

ACTIVO

Sensor de temperatura local y remoto de ±0.75 °C con SMBus y compensación beta para diodo de 45 n

Detalles del producto

Local sensor accuracy (max) 2 Type Remote Operating temperature range (°C) -40 to 125 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) 670 Temp resolution (max) (bps) 11 Remote channels (#) 1 Addresses 3 Rating Catalog
Local sensor accuracy (max) 2 Type Remote Operating temperature range (°C) -40 to 125 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) 670 Temp resolution (max) (bps) 11 Remote channels (#) 1 Addresses 3 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Remote and Local Temperature Channels
  • Targeted for Intel 45nm Processor Diodes
  • Two Formats: −128°C to +127.875°C and 0°C to 255.875°C
  • Digital Filter for Remote Channel
  • Programmable TCRIT and OS Thresholds
  • Programmable Shared Hysteresis Register
  • Diode Fault Detection
  • Mask, Offset, and Status Registers
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • Programmable Conversion Rate for Best Power Consumption
  • Three-Level Address Pin
  • Standby Mode One-Shot Conversion Control
  • Pin-for-Pin Compatible With the LM95235 and LM86, LM89, LM99
  • 8-Pin VSSOP and SOIC Packages

Key Specifications

  • Supply Voltage 3.0 to 3.6 V
  • Supply Current, Conv. Rate = 1 Hz 350 µA (typ)
  • Remote Diode Temperature Accuracy
    • TA = 25°C to 85°C; TD = 50°C to 105°C, ±0.75 °C (max)
    • TA = 25°C to 85°C; TD = 40°C to 125°C, ±1.5 °C (max)
  • Local Temperature Accuracy
    • TA = 25°C to 100°C, ±2.0 °C (max)
  • Conversion Rate, Both Channels 16 to 0.4 Hz

All trademarks are the property of their respective owners.

  • Remote and Local Temperature Channels
  • Targeted for Intel 45nm Processor Diodes
  • Two Formats: −128°C to +127.875°C and 0°C to 255.875°C
  • Digital Filter for Remote Channel
  • Programmable TCRIT and OS Thresholds
  • Programmable Shared Hysteresis Register
  • Diode Fault Detection
  • Mask, Offset, and Status Registers
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • Programmable Conversion Rate for Best Power Consumption
  • Three-Level Address Pin
  • Standby Mode One-Shot Conversion Control
  • Pin-for-Pin Compatible With the LM95235 and LM86, LM89, LM99
  • 8-Pin VSSOP and SOIC Packages

Key Specifications

  • Supply Voltage 3.0 to 3.6 V
  • Supply Current, Conv. Rate = 1 Hz 350 µA (typ)
  • Remote Diode Temperature Accuracy
    • TA = 25°C to 85°C; TD = 50°C to 105°C, ±0.75 °C (max)
    • TA = 25°C to 85°C; TD = 40°C to 125°C, ±1.5 °C (max)
  • Local Temperature Accuracy
    • TA = 25°C to 100°C, ±2.0 °C (max)
  • Conversion Rate, Both Channels 16 to 0.4 Hz

All trademarks are the property of their respective owners.

The LM95245 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface and TruTherm technology that can monitor the temperature of a remote diode as well as its own temperature. The LM95245 can be used to very accurately monitor the temperature of external devices such as microprocessors. TruTherm technology allows the LM95245 to precisely monitor thermal diodes found in 90 nm and smaller geometry processes. The LM95245 is specifically targeted for Intel processors on 45nm process. LM95245 reports temperature in two different formats for +127.875°C/-128°C range and 0°C/255°C range. The LM95245 T_CRIT and OS outputs are asserted when either unmasked channel exceeds its programmed limit and can be used to shutdown the system, to turn on the system fans, or as a microcontroller interrupt function. The current status of the T_CRIT and OS pins can be read back from the status registers via the SMBus interface. All limits have a shared programmable hysteresis register.

The remote temperature channel of the LM95245 has a programmable digital filter. The LM95245 is targeted for a typical Intel® processor on a 45 nm, 65 nm or 90nm process, and has an offset register for maximum flexibility and best accuracy.

The LM95245 has a three-level address pin to connect up to 3 devices to the same SMBus master, that is shared with the OS output. The LM95245 has a programmable conversion rate register and a standby mode to save power. One conversion can be triggered in standby mode by writing to the one-shot register.

The LM95245 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface and TruTherm technology that can monitor the temperature of a remote diode as well as its own temperature. The LM95245 can be used to very accurately monitor the temperature of external devices such as microprocessors. TruTherm technology allows the LM95245 to precisely monitor thermal diodes found in 90 nm and smaller geometry processes. The LM95245 is specifically targeted for Intel processors on 45nm process. LM95245 reports temperature in two different formats for +127.875°C/-128°C range and 0°C/255°C range. The LM95245 T_CRIT and OS outputs are asserted when either unmasked channel exceeds its programmed limit and can be used to shutdown the system, to turn on the system fans, or as a microcontroller interrupt function. The current status of the T_CRIT and OS pins can be read back from the status registers via the SMBus interface. All limits have a shared programmable hysteresis register.

The remote temperature channel of the LM95245 has a programmable digital filter. The LM95245 is targeted for a typical Intel® processor on a 45 nm, 65 nm or 90nm process, and has an offset register for maximum flexibility and best accuracy.

The LM95245 has a three-level address pin to connect up to 3 devices to the same SMBus master, that is shared with the OS output. The LM95245 has a programmable conversion rate register and a standby mode to save power. One conversion can be triggered in standby mode by writing to the one-shot register.

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Documentación técnica

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Tipo Título Fecha
* Data sheet Precision Diode Digital Temp Sensor w/TruTherm BJT Comp Tech for 45nm Process datasheet (Rev. G) 22 mar 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.

Controlador o biblioteca

LM95245SW-LINUX — Controlador Linux para LM95245

The Linux driver supports the LM95245 series of 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 Devices:
  • (...)
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
Modelo de simulación

LM95245 IBIS MODEL

SNIM006.ZIP (25 KB) - IBIS Model
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian

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

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

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