Overview
The Texas Instruments LM50CIM3X/NOPB is a precision integrated-circuit temperature sensor designed to operate over a wide temperature range. This device is packaged in a 3-pin SOT-23 package and is calibrated directly in degrees Celsius, providing a linear output voltage proportional to temperature with a scale factor of 10 mV/°C. The LM50CIM3X/NOPB includes a 500 mV offset, allowing it to sense negative temperatures without the need for a negative supply voltage. It is suitable for various applications requiring accurate temperature sensing and is known for its low cost and high accuracy due to wafer-level trimming and calibration.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM50CIM3X/NOPB |
| Package | SOT-23 |
| Temperature Range | –40°C to 125°C |
| Scale Factor | 10 mV/°C |
| Offset Voltage | 500 mV |
| Supply Voltage | 4.5 V to 10 V |
| Quiescent Current | Less than 130 µA |
| Accuracy at 25°C | ±2°C |
| Accuracy over –40°C to 125°C | ±4°C |
| Self-Heating | Less than 0.2°C in still air |
| RoHS Compliance | Yes |
| ECCN | EAR99 |
Key Features
- Linear Output Voltage: The output voltage is linearly proportional to temperature with a scale factor of 10 mV/°C.
- Offset Voltage: Includes a 500 mV offset to enable sensing of negative temperatures without a negative supply voltage.
- Wide Temperature Range: Operates over a –40°C to 125°C temperature range.
- Low Power Consumption: Quiescent current is less than 130 µA, minimizing self-heating to less than 0.2°C in still air.
- High Accuracy: Achieves accuracies of ±2°C at 25°C and ±4°C over the full temperature range due to wafer-level trimming and calibration.
- RoHS Compliance: Compliant with EU RoHS requirements.
Applications
- Automotive Systems: Suitable for temperature sensing in automotive applications.
- Computers and Disk Drives: Used in computer systems and disk drives for temperature monitoring.
- Battery Management: Employed in battery management systems to monitor temperature).
- Medical Instruments: Used in portable medical instruments for accurate temperature sensing).
- HVAC Systems: Applied in heating, ventilation, and air conditioning systems for temperature control).
- Power Supply Modules: Utilized in power supply modules to ensure optimal operating temperatures).
Q & A
- What is the temperature range of the LM50CIM3X/NOPB?
The LM50CIM3X/NOPB operates over a –40°C to 125°C temperature range).
- What is the scale factor of the LM50CIM3X/NOPB?
The output voltage of the LM50CIM3X/NOPB is linearly proportional to temperature with a scale factor of 10 mV/°C).
- What is the offset voltage of the LM50CIM3X/NOPB?
The device includes a 500 mV offset to enable sensing of negative temperatures without a negative supply voltage).
- What is the supply voltage range for the LM50CIM3X/NOPB?
The LM50CIM3X/NOPB operates from a supply voltage of 4.5 V to 10 V).
- What is the quiescent current of the LM50CIM3X/NOPB?
The quiescent current is less than 130 µA).
- What is the accuracy of the LM50CIM3X/NOPB at 25°C?
The accuracy at 25°C is ±2°C).
- Is the LM50CIM3X/NOPB RoHS compliant?
Yes, the LM50CIM3X/NOPB is RoHS compliant).
- What are some common applications of the LM50CIM3X/NOPB?
Common applications include automotive systems, computers, disk drives, battery management, medical instruments, HVAC systems, and power supply modules).
- What is the self-heating of the LM50CIM3X/NOPB?
The self-heating is less than 0.2°C in still air).
- What is the ECCN code for the LM50CIM3X/NOPB?
The ECCN code is EAR99).
