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數位溫度感測器

LM74

現行

具 SPI 介面的 ±1.25°C 溫度感測器

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LM74

現行
產品規格表 立即訂購

產品詳細資料

Local sensor accuracy (max) 1.25 Type Local Operating temperature range (°C) -55 to 150 Interface type SPI Supply current (max) (µA) 470 Temp resolution (max) (bps) 13 Remote channels (#) 0 Rating Catalog
Local sensor accuracy (max) 1.25 Type Local Operating temperature range (°C) -55 to 150 Interface type SPI Supply current (max) (µA) 470 Temp resolution (max) (bps) 13 Remote channels (#) 0 Rating Catalog
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) DSBGA (YTA) 5 3.0625 mm² (— mm × — mm)
  • 0.0625°C Temperature Resolution
  • Shutdown Mode Conserves Power Between Temperature Reading
  • SPI and MICROWIRE Bus Interface
  • 5-Bump DSBGA Package Saves Space

Key Specifications

  • Supply Voltage 3.0V or 2.65V to 5.5V
  • Supply Current
    • Operating265μA (typ)520μA (max)
    • Shutdown3μA (typ)
  • Temperature Accuracy
    • −10°C to 65°C, ±1.25°C(max)
    • −25°C to 110°C, ±2.1°C(max)
    • −55°C to 125°C, ±3°C(max)

All trademarks are the property of their respective owners.

  • 0.0625°C Temperature Resolution
  • Shutdown Mode Conserves Power Between Temperature Reading
  • SPI and MICROWIRE Bus Interface
  • 5-Bump DSBGA Package Saves Space

Key Specifications

  • Supply Voltage 3.0V or 2.65V to 5.5V
  • Supply Current
    • Operating265μA (typ)520μA (max)
    • Shutdown3μA (typ)
  • Temperature Accuracy
    • −10°C to 65°C, ±1.25°C(max)
    • −25°C to 110°C, ±2.1°C(max)
    • −55°C to 125°C, ±3°C(max)

All trademarks are the property of their respective owners.

The LM74 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE compatible interface. The host can query the LM74 at any time to read temperature. A shutdown mode decreases power consumption to less than 10 μA. This mode is useful in systems where low average power consumption is critical.

The LM74 has 12-bit plus sign temperature resolution (0.0625°C per LSB) while operating over a temperature range of −55°C to +150°C.

The LM74's 3.0V to 5.5V supply voltage range, low supply current and simple SPI interface make it ideal for a wide range of applications. These include thermal management and protection applications in hard disk drives, printers, electronic test equipment, and office electronics. The LM74 is available in the SOIC package as well as the 5-Bump DSBGA package.

The LM74 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE compatible interface. The host can query the LM74 at any time to read temperature. A shutdown mode decreases power consumption to less than 10 μA. This mode is useful in systems where low average power consumption is critical.

The LM74 has 12-bit plus sign temperature resolution (0.0625°C per LSB) while operating over a temperature range of −55°C to +150°C.

The LM74's 3.0V to 5.5V supply voltage range, low supply current and simple SPI interface make it ideal for a wide range of applications. These include thermal management and protection applications in hard disk drives, printers, electronic test equipment, and office electronics. The LM74 is available in the SOIC package as well as the 5-Bump DSBGA package.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LM74 SPI/ MICROWIRE 12-Bit Plus Sign Temperature Sensor datasheet (Rev. K) 2013/3/22
應用說明 AN-1256 Tiny Temperature Sensors for Portable Systems (Rev. A) 2013/4/26
應用說明 Tiny Temperature Sensors for Remote Systems 2003/2/17

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驅動程式或資料庫

LM70SW-LINUX — 適用於 LM70 的 Linux 驅動程式

The Linux driver supports the LM70 series of Temperature Sensors. The Linux driver supports communication through the SPI 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:
  • lm70
  • tmp121
  • (...)
支援產品和硬體
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SOIC (D) 8 Ultra Librarian
DSBGA (YTA) 5 Ultra Librarian
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