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數位溫度感測器

LM73

現行

具 I2C/SMBus 介面的 ±1°C 溫度感測器

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產品規格表

LM73

現行
產品規格表 立即訂購

產品詳細資料

Local sensor accuracy (max) 1 Type Local Operating temperature range (°C) -40 to 150 Supply voltage (min) (V) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion, UL recognized Supply current (max) (µA) 550 Temp resolution (max) (Bits) 14 Remote channels (#) 0 Addresses 6 Rating Catalog
Local sensor accuracy (max) 1 Type Local Operating temperature range (°C) -40 to 150 Supply voltage (min) (V) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion, UL recognized Supply current (max) (µA) 550 Temp resolution (max) (Bits) 14 Remote channels (#) 0 Addresses 6 Rating Catalog
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • Single Address Pin Offers Choice of Three
    Selectable Addresses Per Version for a Total of
    Six Possible Addresses.
  • SMBus and I2C-compatible Two-Wire Interface
  • Supports 400-Khz Operation
  • Shutdown Mode With One-shot Feature Available
    for Very Low Average Power Consumption
  • Programmable Digital Temperature Resolution
    From 11 Bits to 14 Bits
  • Fast Conversion Rate Ideal for Quick Power Up
    and Measuring Rapidly Changing Temperature
  • Open-Drain ALERT Output Pin Goes Active When
    Temperature is Above a Programmed
    Temperature Limit
  • Very Stable, Low-noise Digital Output
  • UL Recognized Component
  • Key Specifications
    •  Supply Current
      • Operating
        • 320 µA (Typical)
        • 495 µA (Maximum)
      • Shutdown
        • 8 µA (Maximum)
        • 1.9 µA (Typical)
    • Temperature Accuracy
      • −10°C to 80°C: ±1.0°C (Maximum)
      • −25°C to 115°C: ±1.5°C (Maximum)
      • −40°C to 150°C: ±2°C (Maximum)
    • Resolution
      • 0.25°C to 0.03125°C
    • Conversion Time
      • 11-Bit (0.25°C): 14 ms (Maximum)
      • 14-Bit (0.03125°C): 112 ms (Maximum)
  • Single Address Pin Offers Choice of Three
    Selectable Addresses Per Version for a Total of
    Six Possible Addresses.
  • SMBus and I2C-compatible Two-Wire Interface
  • Supports 400-Khz Operation
  • Shutdown Mode With One-shot Feature Available
    for Very Low Average Power Consumption
  • Programmable Digital Temperature Resolution
    From 11 Bits to 14 Bits
  • Fast Conversion Rate Ideal for Quick Power Up
    and Measuring Rapidly Changing Temperature
  • Open-Drain ALERT Output Pin Goes Active When
    Temperature is Above a Programmed
    Temperature Limit
  • Very Stable, Low-noise Digital Output
  • UL Recognized Component
  • Key Specifications
    •  Supply Current
      • Operating
        • 320 µA (Typical)
        • 495 µA (Maximum)
      • Shutdown
        • 8 µA (Maximum)
        • 1.9 µA (Typical)
    • Temperature Accuracy
      • −10°C to 80°C: ±1.0°C (Maximum)
      • −25°C to 115°C: ±1.5°C (Maximum)
      • −40°C to 150°C: ±2°C (Maximum)
    • Resolution
      • 0.25°C to 0.03125°C
    • Conversion Time
      • 11-Bit (0.25°C): 14 ms (Maximum)
      • 14-Bit (0.03125°C): 112 ms (Maximum)

The LM73 is an integrated, digital-output temperature sensor featuring an incremental Delta-Sigma ADC with a two-wire interface that is compatible with the SMBus and I2C interfaces. The host can query the LM73 at any time to read temperature.

Available in a 6-pin SOT package, the LM73 occupies very little board area while operating over a wide temperature range (–40°C to 150°C) and providing ±1°C accuracy from –10°C to 80°C. The user can optimize between the conversion time and the sensitivity of the LM73 by programming it to report temperature in any of four different resolutions. Defaulting to 11-bit mode (0.25°C/LSB), the LM73 measures temperature in a maximum time of 14 ms, making it ideal for applications that require temperature data very soon after power-up. In its maximum resolution, 14-bit mode (0.03125°C/LSB), the LM73 is optimized to sense very small changes in temperature.

A single multi-level address line selects one of three unique device addresses. An open-drain ALERT output goes active when the temperature exceeds a programmable limit. Both the data and clock lines are filtered for excellent noise tolerance and reliable communication. Additionally, a time-out feature on the clock and data lines causes the LM73 to automatically reset these lines if either is held low for an extended time, thus exiting any bus lock-up condition without processor intervention.

The LM73 is an integrated, digital-output temperature sensor featuring an incremental Delta-Sigma ADC with a two-wire interface that is compatible with the SMBus and I2C interfaces. The host can query the LM73 at any time to read temperature.

Available in a 6-pin SOT package, the LM73 occupies very little board area while operating over a wide temperature range (–40°C to 150°C) and providing ±1°C accuracy from –10°C to 80°C. The user can optimize between the conversion time and the sensitivity of the LM73 by programming it to report temperature in any of four different resolutions. Defaulting to 11-bit mode (0.25°C/LSB), the LM73 measures temperature in a maximum time of 14 ms, making it ideal for applications that require temperature data very soon after power-up. In its maximum resolution, 14-bit mode (0.03125°C/LSB), the LM73 is optimized to sense very small changes in temperature.

A single multi-level address line selects one of three unique device addresses. An open-drain ALERT output goes active when the temperature exceeds a programmable limit. Both the data and clock lines are filtered for excellent noise tolerance and reliable communication. Additionally, a time-out feature on the clock and data lines causes the LM73 to automatically reset these lines if either is held low for an extended time, thus exiting any bus lock-up condition without processor intervention.
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類型 標題 日期
* Data sheet LM73 2.7-V, SOT-23, 11- to 14-Bit Digital Temperature Sensor With 2-Wire Interface datasheet (Rev. F) PDF | HTML 2015年 10月 29日
Application note How to Read and Interpret Digital Temperature Sensor Output Data PDF | HTML 2024年 4月 12日
Certificate UL Certificate of Compliance Vol1-Sec6 E232195 2018年 8月 9日
Application note Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) 2013年 5月 6日

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驅動程式或資料庫

LM73SW-LINUX — 適用於 LM73 的 Linux 驅動程式

The Linux driver supports the LM73 Temperature Sensor. 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:

  • lm73

 

Linux Source Files

(...)

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DIGITALTEMPSENSORSEVM-SW — Eval Board Software for Hardware Monitors and Digital Temp Sensors

Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
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產品
數位溫度感測器
LM63 — 具風扇控制的 1 個遠端與本機溫度感測器 LM64 — 具風扇控制與 5 個 GPIO 的 1 個遠端與本機溫度感測器 LM71 — 具 SPI 介面的 ±1.5°C 溫度感測器 LM71-Q1 — 具 SPI 介面的汽車級、±1.5°C 溫度感測器 LM73 — 具 I2C/SMBus 介面的 ±1°C 溫度感測器 LM86 — 具 SMBu 介面的 ±0.75°C 遠端和本機溫度感測器 LM89 — 具 SMBus 介面和 2 個匯流排分載位址的 ± 0.75 ° C 遠端和本機溫度感測器 LM90 — 具 SMBus 介面的遠端和本機溫度感測器 LM93 — 具硬體監控器和 16 個電源電壓監控器的 2 個遠端、1 個本機溫度感測器 LM95010 — 具 SensorPath 介面的 ±2°C 溫度感測器 LM95071 — 具 SPI 介面的 ±1°C 溫度感測器 LM95221 — 具 beta 補償和 SMBus、I2C 介面的 ±3°C 雙遠端和本機溫度感測器 LM95231 — 具 TruTherm™ 技術和 SMBus 介面的雙遠端和本機溫度感測器 LM95235 — 具 SMBus、beta 補償且適用 65/90nm 二極體的 ±0.75°C 遠端和本機溫度感測器 LM95235-Q1 — 具 TruTherm™ 技術和 SMBus 的汽車級 ±2°C 遠端和本機溫度感測器 LM96000 — 具風扇控制和 6 個電源電壓監控器的硬體監控器 LM96080 — 具風扇速度和電源電壓監控器的 1 個本機溫度感測器 LM96163 — 具 beta 補償和風扇控制的 1 個遠端與本機溫度感測器 LM99 — 具 TruTherm™ 技術和 SMBus 介面的遠端和本機溫度感測器
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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
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產品
數位溫度感測器
LM63 — 具風扇控制的 1 個遠端與本機溫度感測器 LM64 — 具風扇控制與 5 個 GPIO 的 1 個遠端與本機溫度感測器 LM71 — 具 SPI 介面的 ±1.5°C 溫度感測器 LM71-Q1 — 具 SPI 介面的汽車級、±1.5°C 溫度感測器 LM73 — 具 I2C/SMBus 介面的 ±1°C 溫度感測器 LM75A — 2C 業界標準溫度感測器、I2C/SMBus 介面 LM86 — 具 SMBu 介面的 ±0.75°C 遠端和本機溫度感測器 LM89 — 具 SMBus 介面和 2 個匯流排分載位址的 ± 0.75 ° C 遠端和本機溫度感測器 LM90 — 具 SMBus 介面的遠端和本機溫度感測器 LM93 — 具硬體監控器和 16 個電源電壓監控器的 2 個遠端、1 個本機溫度感測器 LM95010 — 具 SensorPath 介面的 ±2°C 溫度感測器 LM95071 — 具 SPI 介面的 ±1°C 溫度感測器 LM95172-Q1 — 具 200°C 功能和 SPI 介面的汽車級 ±1°C 溫度感測器 LM95214 — 具 SMBus 介面的 ±2°C 四遠端和本機溫度感測器 LM95221 — 具 beta 補償和 SMBus、I2C 介面的 ±3°C 雙遠端和本機溫度感測器 LM95231 — 具 TruTherm™ 技術和 SMBus 介面的雙遠端和本機溫度感測器 LM95233 — 具 TruTherm™ 技術和 SMBus 介面的 ±2°C 雙遠端和本機溫度感測器 LM95234 — 具 TruTherm™ 技術和 SMBus 介面的 ±2°C 雙遠端和本機溫度感測器 LM95235 — 具 SMBus、beta 補償且適用 65/90nm 二極體的 ±0.75°C 遠端和本機溫度感測器 LM95235-Q1 — 具 TruTherm™ 技術和 SMBus 的汽車級 ±2°C 遠端和本機溫度感測器 LM95241 — 具 beta 補償和 SMBus、I2C 介面的 ±1.25°C 雙遠端和本機溫度感測器 LM95245 — 具 SMBus、beta 補償且適用 45nm 二極體的 ±0.75°C 遠端和本機溫度感測器 LM96000 — 具風扇控制和 6 個電源電壓監控器的硬體監控器 LM96080 — 具風扇速度和電源電壓監控器的 1 個本機溫度感測器 LM96163 — 具 beta 補償和風扇控制的 1 個遠端與本機溫度感測器 LM99 — 具 TruTherm™ 技術和 SMBus 介面的遠端和本機溫度感測器
精確 ADC
ADC128D818 — 具溫度感測器、內部/外部電壓參考和 I2C 介面的 12 位元 82SPS 8 通道 ΔΣ ADC
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模擬型號

LM73 IBIS Model

SNOM464.ZIP (41 KB) - IBIS Model
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23-THN (DDC) 6 Ultra Librarian
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