LM50 ±2°C Analog Output Temperature Sensor | TI.com

LM50 (ACTIVE)

±2°C Analog Output Temperature Sensor

 

Description

The LM50 and LM50-Q1 devices are precision integrated-circuit temperature sensors that can sense a –40°C to 125°C temperature range using a single positive supply. The output voltage of the device is linearly proportional to temperature (10 mV/°C) and has a DC offset of 500 mV. The offset allows reading negative temperatures without the need for a negative supply.

The ideal output voltage of the LM50 or LM50-Q1 ranges from 100 mV to 1.75 V for a –40°C to 125°C temperature range. The LM50 and LM50-Q1 do not require any external calibration or trimming to provide accuracies of ±3°C at room temperature and ±4°C over the full –40°C to 125°C temperature range. Trimming and calibration of the LM50 and LM50-Q1 at the wafer level assure low cost and high accuracy. The linear output, 500 mV offset, and factory calibration of the LM50 and LM50-Q1 simplify the circuitry requirements in a single supply environment where reading negative temperatures is necessary. Because the quiescent current of the LM50 and LM50-Q1 is less than 130 µA, self-heating is limited to a very low 0.2°C in still air.

Features

  • LM50-Q1 is AEC-Q100 Grade 1 Qualified and is Manufactured on an Automotive Grade Flow
  • Calibrated Directly in Degrees Celsius (Centigrade)
  • Linear + 10 mV/°C Scale Factor
  • ±2°C Accuracy Specified at 25°C
  • Specified for Full –40° to 125°C range
  • Suitable for Remote Applications
  • Low Cost Due to Wafer-Level Trimming
  • Operates from 4.5 V to 10 V
  • Less than 130-µA Current Drain
  • Low Self-Heating: Less than 0.2°C in Still A
  • Nonlinearity Less than 0.8°C Over Temp
  • UL Recognized Component

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Parametrics Compare all products in Analog temperature sensors

 
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)
Rating
Features
Output impedance (ohms)
Interface
LM50 TMP235
2     1    
-40 to 125     -40 to 150    
4.5     2.3    
10     5.5    
130     12    
10     10    
Catalog     Catalog    
UL Recognized     Industry standard pinout    
2000     20    
Analog Output     Analog Output