LM71 具有 SPI 接口的 ±1.5°C 温度传感器 | 德州仪器 TI.com.cn

LM71 (正在供货)

具有 SPI 接口的 ±1.5°C 温度传感器

具有 SPI 接口的 ±1.5°C 温度传感器 - LM71


The LM71 is a low-power, high-resolution digital temperature sensor with an SPI and MICROWIRE compatible interface, available in the 5-pin SOT-23 or the 6-pin WSON (no pull back) package. The host can query the LM71 at any time to read temperature. Its low operating current is useful in systems where low power consumption is critical.

The LM71 has 13-bit plus sign temperature resolution (0.03125°C per LSB) while operating over a temperature range of −40°C to +150°C.

The LM71’s 2.65V to 5.5V supply voltage range, fast conversion rate, low supply current, and simple SPI interface make it ideal for a wide range of applications. The LM71Q is available in the 5-lead SOT-23 package only.


  • LM71Q is AEC-Q100 Grade 0 Qualified and is Manufactured on an Automotive Grade Flow
  • 5-Pin SOT-23 Package or 6-Pin No-Pull-Back WSON Package
  • Operates Over a Full −40°C to +150°C Range
  • SPI and MICROWIRE Bus Interface

Key Specifications

  • Supply Voltage: 2.65V to 5.5V
  • Supply Current
    • Operating: 300 µA (typ)
    • 550 µA (max)
  • Temperature Accuracy
    • −10°C to +65°C: ±1.5°C (max)
    • −40°C to 150°C: +3/− 2°C (max)
  • Termperature Resolution: 31.25 m°C

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参数 与其它产品相比 数字温度传感器

Device Type
Local Sensor Accuracy (Max) (+/- C)
Temp Resolution (Max) (bits)
Operating Temperature Range (C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Max) (uA)
Remote Channels (#)
Package Group
Package Size: mm2:W x L (PKG)
LM71 LM71-Q1 LM73
Local     Local     Local    
SPI, Microwire     SPI, Microwire     I2C, SMBus, 2-Wire    
1.5     1.5     1    
14     14     14    
-40 to 150     -40 to 150     -40 to 150    
2.65     2.65     2.7    
5.5     5.5     5.5    
550     550     550    
Shutdown     Shutdown     Configurable Resolution
Programmable Alert
One-Shot Conversion
UL Recognized    
0     0     0    
NA     NA     6    
Catalog     Automotive     Catalog    
SOT-23     SOT-23-THIN    
5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)
See datasheet (WSON)    
5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)     6SOT-23-THIN: 8 mm2: 2.8 x 2.9(SOT-23-THIN)    

其它合格版本 LM71

版本 器件型号 定义
汽车电子 LM71-Q1 Q100 适用于追求零缺陷的高可靠性汽车电子应用的器件