Overview
The LM50QIM3X/NOPB is a precision integrated-circuit temperature sensor produced by Texas Instruments (TI). This sensor is designed to provide a voltage output that is linearly proportional to the Celsius temperature, making it highly accurate and reliable for various applications. The LM50QIM3X/NOPB is part of the automotive, AEC-Q100 series, ensuring it meets rigorous standards of quality and reliability. It does not require any external calibration and offers typical accuracies of ±0.5°C at room temperature and ±3°C over a full −40°C to 125°C temperature range.
Key Specifications
| Parameter | Conditions | Typical Limit | Max Limit | Units |
|---|---|---|---|---|
| Temperature Range | −40°C to 125°C | °C | ||
| Accuracy at +25°C | TA = +25°C | ±2.0 | ±3.0 | °C |
| Accuracy at TMAX | TA = TMAX | ±4.0 | °C | |
| Accuracy at TMIN | TA = TMIN | +3.0, −3.5 | °C | |
| Nonlinearity | ±0.8 | °C | ||
| Sensor Gain (Average Slope) | +9.7 to +10.3 | mV/°C | ||
| Output Resistance | 2000 to 4000 | Ω | ||
| Line Regulation | +4.5V ≤ VS ≤ +10V | ±0.8 to ±1.2 | mV/V | |
| Quiescent Current | < 130 µA | µA | ||
| Package Type | SOT-23 | |||
| RoHS Compliance | Yes |
Key Features
- Linear Output: The LM50QIM3X/NOPB provides a voltage output that is linearly proportional to the Celsius temperature with a scale factor of +10 mV/°C.
- No External Calibration: The sensor does not require any external calibration or trimming to provide high accuracy.
- Wide Temperature Range: Operates over a −40°C to 125°C temperature range, making it suitable for various applications.
- Low Quiescent Current: The quiescent current is less than 130 µA, which minimizes self-heating to 0.2°C in still air.
- RoHS Compliance: The NOPB designation indicates that the product is lead-free and RoHS compliant, ensuring it meets environmental standards for hazardous substances.
- AEC-Q100 Qualified: Designed to meet the rigorous standards of the automotive industry, ensuring high reliability and quality.
Applications
- Automotive Systems: Ideal for temperature monitoring in automotive applications due to its AEC-Q100 qualification.
- Industrial Control Systems: Suitable for use in industrial environments where accurate temperature monitoring is critical.
- Consumer Electronics: Can be used in various consumer electronics where temperature sensing is required.
- Medical Devices: Applicable in medical devices that require precise temperature monitoring.
- Environmental Monitoring: Useful in environmental monitoring systems where temperature data is essential.
Q & A
- What is the temperature range of the LM50QIM3X/NOPB?
The LM50QIM3X/NOPB operates over a −40°C to 125°C temperature range.
- Does the LM50QIM3X/NOPB require external calibration?
No, the LM50QIM3X/NOPB does not require any external calibration or trimming to provide high accuracy.
- What is the quiescent current of the LM50QIM3X/NOPB?
The quiescent current is less than 130 µA.
- What is the package type of the LM50QIM3X/NOPB?
The LM50QIM3X/NOPB is available in the SOT-23 package.
- Is the LM50QIM3X/NOPB RoHS compliant?
Yes, the LM50QIM3X/NOPB is lead-free and RoHS compliant.
- What is the scale factor of the LM50QIM3X/NOPB?
The scale factor is +10 mV/°C.
- What are some common applications of the LM50QIM3X/NOPB?
Common applications include automotive systems, industrial control systems, consumer electronics, medical devices, and environmental monitoring.
- What is the accuracy of the LM50QIM3X/NOPB at room temperature?
The accuracy at room temperature is ±2.0°C.
- How does the LM50QIM3X/NOPB handle negative temperatures?
The LM50QIM3X/NOPB can read negative temperatures without the need for a negative supply due to its offset voltage.
- Is the LM50QIM3X/NOPB suitable for automotive applications?
Yes, it is AEC-Q100 qualified, making it suitable for automotive applications.
