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LM50

SOT-23 Single-Supply Centigrade Temperature Sensor

Partnumber Manufacturer Quantity Availability
LM50 320 In Stock

Description and Introduction

SOT-23 Single-Supply Centigrade Temperature Sensor The LM50 is a precision integrated-circuit temperature sensor manufactured by Texas Instruments. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Manufacturer Specifications:**  
- **Supply Voltage Range:** 4.5V to 10V  
- **Operating Temperature Range:** -40°C to +125°C  
- **Output Voltage:** 10mV/°C (linear slope)  
- **Accuracy:** ±2°C (at 25°C)  
- **Quiescent Current:** 120µA (typical)  
- **Output Impedance:** 80Ω (typical)  
- **Package Options:** TO-92, SOT-23  

### **Descriptions:**  
- The LM50 is an analog temperature sensor that provides a voltage output linearly proportional to the Celsius temperature.  
- It is calibrated to output 500mV at 0°C and increases by 10mV per degree Celsius.  
- The device does not require external calibration and is designed for low-cost applications.  

### **Features:**  
- Linear +10mV/°C scale factor  
- Operates from a single power supply (4.5V to 10V)  
- Low self-heating (0.08°C in still air)  
- Wide temperature range (-40°C to +125°C)  
- Low quiescent current (120µA typical)  
- Directly calibrated in Celsius (°C)  
- Suitable for remote applications due to low output impedance  

These details are sourced from Texas Instruments' official documentation on the LM50 temperature sensor.

Application Scenarios & Design Considerations

SOT-23 Single-Supply Centigrade Temperature Sensor

Alternative Part Number

  • TMP36GT9Z --: Analog temperature sensor with linear voltage output similar to LM50, wide supply range and low cost, direct functional replacement in most circuits.
  • LMT85LP --: Precision analog temperature sensor with analog voltage output, comparable accuracy and supply range, suitable drop-in alternative for LM50 applications.
  • MCP9700A-E/TO --: Low-cost linear active thermistor IC with analog voltage output proportional to temperature, widely used as an LM50 substitute in embedded designs.

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