LM94021 (正在供货)

具有多个增益模拟输出选项的 ±1.5°C 温度传感器

具有多个增益模拟输出选项的 ±1.5°C 温度传感器 - LM94021


The LM94021 is a precision analog output CMOS integrated-circuit temperature sensor that operates at a supply voltage as low as 1.5V. While operating over the wide temperature range of −50°C to +150°C, the LM94021 delivers an output voltage that is inversely proportional to measured temperature. The LM94021's low supply current makes it ideal for battery-powered systems as well as general temperature sensing applications.

Two logic inputs, Gain Select 1 (GS1) and Gain Select 0 (GS0), select the gain of the temperature-to-voltage output transfer function. Four slopes are selectable: −5.5 mV/°C, −8.2 mV/°C, −10.9 mV/°C, and −13.6 mV/°C. In the lowest gain configuration (GS1 and GS0 both tied low), the LM94021 can operate with a 1.5V supply while measuring temperature over the full −50°C to +150°C operating range. Tying both inputs high causes the transfer function to have the largest gain of −13.6 mV/°C for maximum temperature sensitivity. The gain-select inputs can be tied directly to VDD or Ground without any pull-up or pull-down resistors, reducing component count and board area. These inputs can also be driven by logic signals allowing the system to optimize the gain during operation or system diagnostics.


  • LM94021Q is AEC-Q100 Grade 0 Qualified
    and is Manufactured on an Automotive Grade Flow
  • Low 1.5V Operation
  • Four Selectable Gains
  • Very Accurate Over Wide Temperature Range of
    −50°C to +150°C
  • Low Quiescent Current
  • Output is Short-Circuit Protected
  • Extremely Small SC70 Package
  • Footprint Compatible with the Industry-Standard
    LM20 Temperature Sensor
  • UL Recognized Component


参数 与其它产品相比 本地模拟温度传感器

Local Sensor Accuracy (Max) (+/- C)
Operating Temperature Range (C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Max) (uA)
Sensor Gain (mV/Deg C)
Output Impedance (Ohm)
LM94021 LM20 LM94022 LM94023 LMT84
1.5    1.5    1.5    1.5    2.7   
-50 to 150    -40 to 125
-40 to 85
-55 to 130   
-50 to 150    -50 to 150    -50 to 150   
1.5    2.4    1.5    1.5    1.5   
5.5    5.5    5.5    5.5    5.5   
12    7    8.1    8.1    8.1   
-5.5 to -13.6    -11.7    -5.5 to -13.6    -5.5 or -8.2    -5.5   
Catalog    Catalog    Catalog    Catalog    Catalog   
UL Recognized    Industry standard pinout    Selectable gain setting    Selectable gain setting    Industry standard pinout   
8    160    5.2    4.4     
Analog Output    Analog Output    Analog Output    Analog Output    Analog Output   

其它合格版本 LM94021

版本 器件型号 定义
汽车电子 LM94021-Q1 Q100 适用于追求零缺陷的高可靠性汽车电子应用的器件