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LM92-具有温度比较器和 I2C 接口的 ±0.33°C 温度传感器
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TI产品 - LM92介绍
LM92 - 具有温度比较器和 I2C 接口的 ±0.33°C 温度传感器

LM92是TI公司的一款本地温度传感器产品,LM92是具有温度比较器和 I2C 接口的 ±0.33°C 温度传感器,本页介绍了LM92的产品说明、应用、特性等,并给出了与LM92相关的TI元器件型号供参考。

LM92 - 具有温度比较器和 I2C 接口的 ±0.33°C 温度传感器 - 本地温度传感器 - 温度传感器和控制IC - TI公司(Texas Instruments,德州仪器)

产品描述

The LM92 is a digital temperature sensor and thermal window comparator with an I2C Serial Bus interface and an accuracy of ±0.33°C. The window-comparator architecture of the LM92 eases the design of temperature control systems. The open-drain Interrupt (INT) output becomes active whenever temperature goes outside a programmable window, while a separate Critical Temperature Alarm (T_CRIT_A) output becomes active when the temperature exceeds a programmable critical limit. The INT output can operate in either a comparator or event mode, while the T_CRIT_A output operates in comparator mode only.

The host can program both the upper and lower limits of the window as well as the critical temperature limit. Programmable Hysteresis as well as a fault queue are available to minimize false tripping. Two pins (A0, A1) are available for address selection. The sensor powers up with default thresholds of 2°C THYST, 10°C TLOW, 64°C THIGH, and 80°C T_CRIT.

The LM92's 2.7V to 5.5V supply voltage range, Serial Bus interface, 12-bit + sign output, and full-scale range of over 128°C make it ideal for a wide range of applications. These include thermal management and protection applications in personal computers, electronic test equipment, office electronics, automotive, medical and HVAC applications.

产品特性

  • Window Comparison Simplifies Design of ACPI-Compatible Temperature Monitoring and Control
  • Serial Bus Interface
  • Separate Open-Drain Outputs for Interrupt and Critical Temperature Shutdown
  • Shutdown Mode to Minimize Power Consumption
  • Up to Four LM92s can be Connected to a Single Bus
  • 12-Bit + Sign Output
  • Operation up to 150°C

Key Specifications

  • Supply Voltage 2.7V to 5.5V
  • Supply Current operating 350 μA (typ) 625 μA (max) shutdown 5 μA (typ)
  • Temperature Accuracy
    • 30°C, ±0.33°C (max)
    • 10°C to 50°C, ±0.50°C (max)
    • −10°C to 85°C, ±1.0°C (max)
    • 125°C, ±1.25°C (max)
    • −25°C to 150°C, ±1.5°C (max)
  • Linearity ±0.5°C (max)
  • Resolution 0.0625°C

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