LM89
Sensor de temperatura local y remoto de ±0.75 °C con interfaz SMBus y 2 direcciones para compartir e
LM89
- Accurately Senses Die Temperature of Remote ICs
or Diode Junctions - Offset Register Allows Accurate Sensing of a Variety
of Thermal Diodes - On-Board Local Temperature Sensing
- 10-Bit Plus Sign Remote Diode Temperature Data Format,
0.125°C Resolution - T_CRIT_A Output Useful for System Shutdown
- ALERT Output Supports SMBus 2.0 Protocol
- SMBus 2.0 Compatible Interface, Supports TIMEOUT
- 8-Pin VSSOP and SOIC Packages
- Key Specifications:
- Supply Voltage: 3.0 V to 3.6 V
- Local Temp Accuracy (includes quantization error)
- TA = 25°C to 125°C ±3.0 °C (max)
- Remote Diode Temp Accuracy (includes quantization error)
- TA = 30°C, TD = 80°C ±0.75 °C (max)
The LM89 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) serial interface. The LM89 accurately measures its own temperature as well as the temperature of an external device, such as processor thermal diode or diode-connected transistor such as the 2N3904. The temperature of any ASIC, GPU, FPGA or MCU can be accurately determined using the LM89 as long as a dedicated diode (semiconductor junction) is available on the target die. The LM89 has an Offset register to allow calibration for different nonideality factors without requiring software management.
Activation of the ALERT occurs when any temperature goes outside a preprogrammed window set by the HIGH and LOW limit registers or exceeds the T_CRIT limit. Activation of the T_CRIT_A occurs when any temperature exceeds the T_CRIT programmed limit.
The LM89 is pin and register compatible with the LM86, LM90, LM99, On Semiconductor ADM1032 and Maxim MAX6657/8.
The LM89C and the LM89-1C have the same functions but different SMBus slave addresses, allowing multiple LM89's on a bus. LM89-1Ds default local T_CRIT temperature limit is 105°C; all other versions are 85°C.
Documentación técnica
Tipo | Título | Fecha | ||
---|---|---|---|---|
* | Data sheet | LM89 ±0.75°C Accurate, Remote Diode And Local Digital Temperature Sensor With Two-Wire Interface datasheet (Rev. D) | PDF | HTML | 23 jun 2014 |
User guide | LM86, LM89, LM89-1, LM90, LM99, LM99-1 Evaluation Board User’s Guide | 29 feb 2012 |
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.
LM90SW-LINUX — Controlador Linux para LM90
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- (...)
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
Sensores de temperatura digitales
ADC de precisión
Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
---|---|---|
SOIC (D) | 8 | Ultra Librarian |
VSSOP (DGK) | 8 | Ultra Librarian |
Pedidos y calidad
- 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
- Lugar de fabricación
- Lugar de ensamblaje
Soporte y capacitación
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