Overview
The LM35DT/NOPB by Texas Instruments is a precision analog temperature sensor characterized by its high accuracy and low voltage operation. This sensor is part of the LM35 series, which are precision integrated-circuit temperature devices with an output voltage linearly proportional to the Centigrade temperature. The LM35DT/NOPB operates over a temperature range from 0°C to 100°C and provides an analog voltage output with a sensitivity of 10 mV/°C. It is packaged in a TO-220 plastic container, which offers effective heat dissipation, crucial for consistent and accurate temperature measurements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | −55°C to 150°C (LM35), 0°C to 100°C (LM35D) | °C |
| Supply Voltage | 4 V to 30 V | V |
| Current Drain | Less than 60 μA | μA |
| Accuracy at 25°C | ±0.5°C | °C |
| Accuracy over Full Range | ±¾°C | °C |
| Sensitivity | 10 mV/°C | mV/°C |
| Self-Heating | Less than 0.1°C in still air | °C |
| Output Impedance | 0.1 Ω for 1-mA load | Ω |
| Package Type | TO-220 (NEB) | - |
| Lead Finish | Sn (Lead-free) | - |
Key Features
- Calibrated Directly in Celsius (Centigrade): No external calibration or trimming required to provide accurate Centigrade scaling.
- Linear + 10-mV/°C Scale Factor: Linear output voltage proportional to temperature.
- High Accuracy: Ensured accuracy of ±0.5°C at 25°C and ±¾°C over the full temperature range.
- Low Current Drain: Less than 60 μA, making it suitable for power-sensitive applications.
- Low Self-Heating: Less than 0.1°C in still air, minimizing thermal effects on measurements.
- Low-Output Impedance: 0.1 Ω for 1-mA load, facilitating easy interfacing with readout or control circuitry.
- Compliance with Regulatory Standards: RoHS and REACH compliant, ensuring suitability for use in environments with strict regulatory requirements.
Applications
- Environmental Monitoring: Suitable for use in weather stations or climate monitoring equipment to track ambient temperatures.
- Consumer Electronics: Used in household appliances such as thermostats, ovens, and refrigerators for temperature control.
- Industrial Automation: Employed in control systems within manufacturing plants to monitor and regulate temperature, safeguarding machinery and processes.
- Healthcare: Potential use in medical devices requiring precise temperature control, such as incubators and diagnostic equipment.
- Power Supplies and Battery Management: Suitable for monitoring temperature in power supplies and battery management systems...
- HVAC and Appliances: Used in heating, ventilation, and air conditioning systems, as well as in various appliances to ensure optimal operation...
Q & A
- What is the operating temperature range of the LM35DT/NOPB?
The LM35DT/NOPB operates over a temperature range from −55°C to 150°C, but the specific LM35D variant is rated for 0°C to 100°C.
- What is the supply voltage range for the LM35DT/NOPB?
The supply voltage range is from 4 V to 30 V.
- How accurate is the LM35DT/NOPB at room temperature?
The accuracy at 25°C is ensured to be ±0.5°C.
- What is the current drain of the LM35DT/NOPB?
The current drain is less than 60 μA.
- What is the sensitivity of the LM35DT/NOPB?
The sensitivity is 10 mV/°C.
- What type of package does the LM35DT/NOPB come in?
The LM35DT/NOPB comes in a TO-220 plastic package.
- Is the LM35DT/NOPB lead-free?
- What are some common applications of the LM35DT/NOPB?
- How does the LM35DT/NOPB comply with regulatory standards?
- What is the self-heating characteristic of the LM35DT/NOPB?
