LM335DT Overview
The LM335DT is a precision temperature sensor designed for accurate temperature monitoring in industrial and consumer electronics applications. It provides a linear output voltage directly proportional to absolute temperature, simplifying temperature measurement and control tasks. This device operates over a wide temperature range and features low self-heating, ensuring reliable performance in demanding environments. With its robust TO-92 package, the LM335DT is well-suited for integration into systems requiring consistent, high-accuracy temperature sensing. For detailed product sourcing and technical support, visit IC Manufacturer.
LM335DT Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | -40 to +100 | ??C |
| Output Voltage (at 25??C) | 2.98 | V |
| Voltage Sensitivity | 10 | mV/K |
| Supply Current | 400 | ??A |
| Operating Voltage | 4 to 30 | V |
| Line Regulation | 0.2 | mV/V |
| Calibration Accuracy (at 25??C) | ??1 | ??C |
| Thermal Resistance (junction to ambient) | 120 | ??C/W |
LM335DT Key Features
- Linear output voltage proportional to absolute temperature: simplifies calibration and temperature conversion in embedded systems.
- Wide operating voltage range (4V to 30V): enables flexible integration with various power supply levels.
- Low supply current consumption (~400??A): supports energy-efficient designs in battery-powered and portable equipment.
- Robust TO-92 package: offers ease of handling and reliable thermal conduction for stable temperature sensing.
Typical Applications
- Temperature monitoring and compensation in industrial process control systems, ensuring accurate environmental management and safety.
- Environmental sensing in HVAC systems to optimize climate control and energy usage.
- Thermal management in power supplies and battery-operated devices to prevent overheating and maintain efficiency.
- Embedded temperature sensing for consumer electronics, providing precise temperature data for system diagnostics and protection.
LM335DT Advantages vs Typical Alternatives
This temperature sensor offers superior linearity and precision compared to many thermistors and basic temperature sensors. Its low supply current and wide operating voltage range make it highly versatile and energy-efficient. The TO-92 package ensures reliable thermal conduction and ease of use in various applications. These characteristics provide engineers and sourcing specialists with a cost-effective, accurate, and robust solution for temperature measurement challenges.
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LM335DT Brand Info
The LM335DT is a product from Texas Instruments, a leading global semiconductor manufacturer known for high-quality analog and mixed-signal integrated circuits. The LM335 series is recognized for precise temperature sensing capabilities and has been widely adopted in both industrial and consumer markets. Texas Instruments supports this product with comprehensive datasheets, application notes, and reliable supply chain options, making it a preferred choice among engineers seeking dependable temperature measurement solutions.
FAQ
What is the principle of operation of the LM335DT temperature sensor?
The device operates as a temperature-dependent voltage source with an output voltage proportional to absolute temperature (in Kelvin). It uses a bandgap reference structure that provides a predictable voltage change with temperature, allowing direct temperature measurement by reading output voltage.
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What is the typical accuracy and calibration requirement of the sensor?
The sensor is factory calibrated to ??1??C accuracy at 25??C. For improved accuracy in critical applications, users can perform external calibration by adjusting the output voltage at a known temperature point.
Can the LM335DT be used in battery-powered applications?
Yes, because of its low supply current of approximately 400??A, it is suitable for battery-operated devices where power efficiency is important. The wide