Overview
The LM35DZ/NOPB is a precision centigrade temperature sensor produced by Texas Instruments. It is part of the LM35 series, which are integrated-circuit temperature devices designed to provide an output voltage that is linearly proportional to the Centigrade temperature. This sensor is calibrated directly in Celsius, eliminating the need for external calibration or trimming. The LM35DZ/NOPB is known for its high accuracy, low self-heating, and ease of interfacing with readout or control circuitry, making it suitable for a wide range of temperature sensing applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | 0 to 100 | °C |
| Supply Voltage | 4 to 30 | V |
| Current Drain | Less than 60 μA | μA |
| Accuracy at 25°C | ±0.5°C | °C |
| Accuracy over Full Range | ±¾°C | °C |
| Scale Factor | 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-92 (LP) |
Key Features
- Calibrated directly in Celsius (Centigrade) to eliminate the need for external calibration or trimming.
- Linear + 10-mV/°C scale factor, providing a straightforward and accurate temperature reading.
- High accuracy with ±0.5°C ensured accuracy at 25°C and ±¾°C over the full temperature range.
- Rated for a full −55°C to 150°C range, though the LM35DZ/NOPB is specifically rated for 0 to 100°C.
- Suitable for remote applications due to its low self-heating and low current drain.
- Low-cost due to wafer-level trimming and calibration.
- Operates from 4 V to 30 V, making it versatile for various power supply configurations.
- Low self-heating of less than 0.1°C in still air, reducing thermal errors.
- Low-output impedance of 0.1 Ω for a 1-mA load, facilitating easy interfacing with readout or control circuitry.
Applications
The LM35DZ/NOPB is suitable for a variety of temperature sensing applications, including:
- Remote temperature sensing due to its low self-heating and low current drain.
- Industrial control systems where precise temperature monitoring is crucial.
- Automotive systems for temperature monitoring in various environments.
- Consumer electronics requiring accurate temperature sensing.
- Medical devices where precise temperature control is essential.
Q & A
- What is the operating temperature range of the LM35DZ/NOPB? The LM35DZ/NOPB operates from 0 to 100°C.
- What is the supply voltage range for the LM35DZ/NOPB? The supply voltage range is from 4 V to 30 V.
- How accurate is the LM35DZ/NOPB at 25°C? The accuracy at 25°C is ±0.5°C.
- What is the scale factor of the LM35DZ/NOPB? The scale factor is 10 mV/°C.
- How much current does the LM35DZ/NOPB draw from the supply? The LM35DZ/NOPB draws less than 60 μA from the supply.
- What is the self-heating of the LM35DZ/NOPB in still air? The self-heating is less than 0.1°C in still air.
- In what package types is the LM35DZ/NOPB available? The LM35DZ/NOPB is available in the TO-92 (LP) package.
- Is the LM35DZ/NOPB suitable for remote applications? Yes, it is suitable for remote applications due to its low self-heating and low current drain.
- What is the output impedance of the LM35DZ/NOPB for a 1-mA load? The output impedance is 0.1 Ω for a 1-mA load.
- Does the LM35DZ/NOPB require external calibration or trimming? No, it does not require external calibration or trimming as it is calibrated directly in Celsius at the wafer level.
