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LM35CH

LM35CH Description

The LM35CH by National Semiconductor is a precision analog voltage output temperature sensor designed for accurate temperature measurement in a wide range of applications. With an output voltage linearly proportional to Celsius temperature (10mV/°C), it eliminates the need for complex signal conditioning or calibration. The sensor operates over a 4V to 30V supply range, making it versatile for both low-power and industrial applications. Its ±0.4°C accuracy (at 25°C) and ±0.8°C worst-case deviation ensure reliable performance across its operating range. The through-hole mounting and bulk packaging simplify integration into PCB-based designs.

LM35CH Features

• Analog Voltage Output (10mV/°C): Directly interpretable without external amplification or linearization.
• Wide Supply Range (4V–30V): Compatible with diverse power sources, from battery-operated devices to industrial systems.
• High Accuracy (±0.4°C at 25°C): Superior precision for critical temperature monitoring.
• Low Self-Heating: Minimizes measurement errors due to sensor-generated heat.
• Linear Output: No need for external calibration, reducing design complexity.
• Through-Hole Mounting: Robust mechanical connection for durable installations.
• REACH & EAR99 Compliant: Meets environmental and export control regulations.

LM35CH Applications

The LM35CH excels in environments requiring stable, high-accuracy temperature sensing, such as:

• Industrial Control Systems: Monitoring machinery or process temperatures.
• HVAC Systems: Thermostats and climate control units.
• Medical Devices: Patient monitoring equipment where precision is critical.
• Automotive Electronics: Engine management and cabin temperature sensing.
• Consumer Electronics: Battery temperature monitoring in portable devices.
• Laboratory Instruments: Calibration tools and environmental chambers.

Conclusion of LM35CH

The LM35CH stands out for its simplicity, accuracy, and broad compatibility, making it a preferred choice for engineers seeking a reliable analog temperature sensor. Its linear output, low self-heating, and wide voltage range reduce design overhead while ensuring consistent performance. Whether in industrial, medical, or consumer applications, the LM35CH delivers cost-effective, high-precision temperature sensing with minimal external components. Its compliance with REACH and EAR99 further ensures global usability, solidifying its position as a versatile solution for temperature measurement challenges.