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LM95214-具有 SMBus 接口的 ±2°C 四路远程和本地温度传感器
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TI产品 - LM95214介绍
LM95214 - 具有 SMBus 接口的 ±2°C 四路远程和本地温度传感器

LM95214是TI公司的一款远程温度传感器产品,LM95214是具有 SMBus 接口的 ±2°C 四路远程和本地温度传感器,本页介绍了LM95214的产品说明、应用、特性等,并给出了与LM95214相关的TI元器件型号供参考。

LM95214 - 具有 SMBus 接口的 ±2°C 四路远程和本地温度传感器 - 远程温度传感器 - 温度传感器和控制IC - TI公司(Texas Instruments,德州仪器)

产品描述

The LM95214 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface that can very accurately monitor the temperature of four remote diodes as well as its own temperature. The four remote diodes can be external devices such as microprocessors, graphics processors that target the ideality of a 2N3904 transistor or diode-connected 2N3904s.

The LM95214 reports temperature in two different formats for +127.875°C/–128°C range and 0°C/255°C range. The LM95214 TCRIT1, TCRIT2 and TCRIT3 outputs are triggered when any unmasked channel exceeds its corresponding programmable 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 TCRIT1, TCRIT2 and TCRIT3 pins can be read back from the status registers. Mask registers are available for further control of the TCRIT outputs.

Two LM95214 remote temperature channels have programmable digital filters while the other two remote channels utilize a fault-queue to minimize unwanted TCRIT events when temperature spikes are encountered.

For optimum flexibility and accuracy, each LM95214 channel includes registers for offset correction. A three-level address pin allows connection of up to 3 LM95214s to the same SMBus master. The LM95214 includes power saving functions such as: programmable conversion rate, shutdown mode, and disabling of unused channels.

产品特性

  • Accurately Senses Die Temperature of 4 Remote ICs or Diode Junctions and Local Temperature
  • Programmable Digital Filters and Analog Front End Filter
  • 0.125°C LSb Temperature Resolution
  • 0.03125°C LSb Remote Temperature Resolution with Digital Filter Enabled
  • +127.875°C/–128°C and 0°C/255°C Remote Ranges
  • Remote Diode Fault Detection, Model Selection and Offset Correction
  • Mask and Status Register Support
  • 3 Programmable TCRIT Outputs with Programmable Shared Hysteresis and Fault-Queue
  • Programmable Conversion Rate and Shutdown Mode One-shot Conversion Control
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • Three-level Address Pin
  • 14-pin WSON Package

Key Specifications

  • Local Temperature Accuracy ±2.0°C (max)
  • Remote Diode Temperature Accuracy ±1.1°C (Max)
  • Supply Voltage 3.0V to 3.6V
  • Average Supply Current (1Hz Conversion Rate) 0.57 mA (Typ)

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