Inicio Sensores Sensores de temperatura Sensores de temperatura digitales
Inicio
Sensores
Sensores de temperatura
Sensores de temperatura digitales

LM94

ACTIVO

Sensor de temperatura local y remoto cuádruple de ±2 °C con compensación beta, control de ventilador

Haga su pedido ahora
Hoja de datos

LM94

ACTIVO
Hoja de datos Haga su pedido ahora

Detalles del producto

Local sensor accuracy (max) 3 Type Fan Controller Operating temperature range (°C) 0 to 100 Supply voltage (min) (V) 3 Interface type SMBus Supply voltage (max) (V) 3.6 Features PWM output, Tachometer Supply current (max) (µA) 1600 Temp resolution (max) (Bits) 8 Remote channels (#) 4 Addresses 3 Rating Catalog
Local sensor accuracy (max) 3 Type Fan Controller Operating temperature range (°C) 0 to 100 Supply voltage (min) (V) 3 Interface type SMBus Supply voltage (max) (V) 3.6 Features PWM output, Tachometer Supply current (max) (µA) 1600 Temp resolution (max) (Bits) 8 Remote channels (#) 4 Addresses 3 Rating Catalog
TSSOP (DGG) 56 113.4 mm² 14 x 8.1
  • 8-bit ΣΔ ADC
  • Monitors 16 Power Supplies
  • Monitors 4 Remote Thermal Diodes and 2 LM60
  • New TruTherm Technology Support for Precision Thermal Diode Measurements
  • Internal Ambient Temperature Sensing
  • Programmable Autonomous Fan Control Based on Temperature Readings with Fan Boost Support
  • Fan Boost Support on Tachometer Limit Error Event
  • Fan Control Based on 13-step Lookup Table or PI Control Loop or Combination of Both
  • PI Fan Control Loop Supports Tcontrol
  • Temperature Reading Digital Filters
  • 0.5°C digital Temperature Sensor Resolution
  • 0.0625°C Filtered Temperature Resolution for Fan Control
  • 2 PWM Fan Speed Control Outputs
  • 4 Fan Tachometer Inputs
  • Dual Processor Thermal Throttling (PROCHOT) Monitoring
  • Dual Dynamic VID Monitoring (6/7 VIDs per processor) Supports VRD10.2/11
  • 8 General Purpose I/Os:
    • 4 Can be Configured as Fan tachometer Inputs
    • 2 Can be Configured to Connect to Processor THERMTRIP
    • 2 are Standard GPIOs that Could be Used to Monitor IERR Signal
  • 2 General Purpose Inputs that Can be Used to Monitor the 7th VID Signal for VRD11
  • Limit Register Comparisons of all Monitored Values
  • 2-wire Serial Digital Interface, SMBus 2.0 Compliant
    • Supports Byte/block Read and Write
    • Selectable Slave Address (Tri-level Pin Selects 1 of 3 Possible Addresses)
    • ALERT Output Supports Interrupt or Comparator Modes
  • 2.5V Reference Voltage Output
  • 56-pin TSSOP Package
  • XOR-tree Test Mode

Key Specifications

  • Voltage Measurement Accuracy ... ±2% FS (max)
  • Temperature Resolution ... 9-bits, 0.5°C
  • Temperature Sensor Accuracy ... ±2.5 °C (max)
  • Temperature Range:
    • LM94 Operational ... 0°C to +85°C
    • Remote Temp Accuracy ... 0°C to +125°C
  • Power Supply Voltage ... +3.0V to +3.6V
  • Power Supply Current ... 1.6 mA

All trademarks are the property of their respective owners.

  • 8-bit ΣΔ ADC
  • Monitors 16 Power Supplies
  • Monitors 4 Remote Thermal Diodes and 2 LM60
  • New TruTherm Technology Support for Precision Thermal Diode Measurements
  • Internal Ambient Temperature Sensing
  • Programmable Autonomous Fan Control Based on Temperature Readings with Fan Boost Support
  • Fan Boost Support on Tachometer Limit Error Event
  • Fan Control Based on 13-step Lookup Table or PI Control Loop or Combination of Both
  • PI Fan Control Loop Supports Tcontrol
  • Temperature Reading Digital Filters
  • 0.5°C digital Temperature Sensor Resolution
  • 0.0625°C Filtered Temperature Resolution for Fan Control
  • 2 PWM Fan Speed Control Outputs
  • 4 Fan Tachometer Inputs
  • Dual Processor Thermal Throttling (PROCHOT) Monitoring
  • Dual Dynamic VID Monitoring (6/7 VIDs per processor) Supports VRD10.2/11
  • 8 General Purpose I/Os:
    • 4 Can be Configured as Fan tachometer Inputs
    • 2 Can be Configured to Connect to Processor THERMTRIP
    • 2 are Standard GPIOs that Could be Used to Monitor IERR Signal
  • 2 General Purpose Inputs that Can be Used to Monitor the 7th VID Signal for VRD11
  • Limit Register Comparisons of all Monitored Values
  • 2-wire Serial Digital Interface, SMBus 2.0 Compliant
    • Supports Byte/block Read and Write
    • Selectable Slave Address (Tri-level Pin Selects 1 of 3 Possible Addresses)
    • ALERT Output Supports Interrupt or Comparator Modes
  • 2.5V Reference Voltage Output
  • 56-pin TSSOP Package
  • XOR-tree Test Mode

Key Specifications

  • Voltage Measurement Accuracy ... ±2% FS (max)
  • Temperature Resolution ... 9-bits, 0.5°C
  • Temperature Sensor Accuracy ... ±2.5 °C (max)
  • Temperature Range:
    • LM94 Operational ... 0°C to +85°C
    • Remote Temp Accuracy ... 0°C to +125°C
  • Power Supply Voltage ... +3.0V to +3.6V
  • Power Supply Current ... 1.6 mA

All trademarks are the property of their respective owners.

The LM94 hardware monitor has a two wire digital interface compatible with SMBus 2.0. Using a ΣΔ ADC, the LM94 measures the temperature of four remote diode connected transistors as well as its own die and 16 power supply voltages. The LM94 has new TruTherm technology that supports precision thermal diode measurements of processors on sub-micron processes.

Description (continued)
To set fan speed, the LM94 has two PWM outputs that are each controlled by up to six temperature zones. The fan-control algorithm can be based on a lookup table, PI (proportional/integral) control loop, or a combination of both. The LM94 includes digital filters that can be invoked to smooth temperature readings for better control of fan speed such that acoustical noise is minimized. The LM94 has four tachometer inputs to measure fan speed. Limit and status registers for all measured values are included.

The LM94 builds upon the functionality of previous motherboard server management ASICs, such as the LM93. It also adds measurement and control support for dynamic Vccp monitoring for VRD10/11 and PROCHOT. It is designed to monitor a dual processor Xeon class motherboard with a minimum of external components.

The LM94 hardware monitor has a two wire digital interface compatible with SMBus 2.0. Using a ΣΔ ADC, the LM94 measures the temperature of four remote diode connected transistors as well as its own die and 16 power supply voltages. The LM94 has new TruTherm technology that supports precision thermal diode measurements of processors on sub-micron processes.

Description (continued)
To set fan speed, the LM94 has two PWM outputs that are each controlled by up to six temperature zones. The fan-control algorithm can be based on a lookup table, PI (proportional/integral) control loop, or a combination of both. The LM94 includes digital filters that can be invoked to smooth temperature readings for better control of fan speed such that acoustical noise is minimized. The LM94 has four tachometer inputs to measure fan speed. Limit and status registers for all measured values are included.

The LM94 builds upon the functionality of previous motherboard server management ASICs, such as the LM93. It also adds measurement and control support for dynamic Vccp monitoring for VRD10/11 and PROCHOT. It is designed to monitor a dual processor Xeon class motherboard with a minimum of external components.

open-in-new Buscar otro/a Sensores de temperatura digitales
Descargar Ver vídeo con transcripción Video

Documentación técnica

star =Principal documentación para este producto seleccionada por TI
No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 1
Tipo Título Fecha
* Data sheet LM94 TruTherm Hardware Monitor with PI Loop Fan Control for Server Management datasheet (Rev. C) 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

LM93SW-LINUX — Controlador Linux para LM93

The Linux driver supports the LM93 series of Hardware Monitors. 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:
  • lm93
  • lm94
Linux (...)
Ver opciones
Paquete Pasadores Descargar
TSSOP (DGG) 56 Ver opciones
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

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

Ver todos los temas del foro en inglés

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

Videos