Details

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Below is the parameter table and instructions for the LM35DZ/NOPB temperature sensor.

LM35DZ/NOPB Parameter Table

Parameter	Symbol	Min	Typical	Max	Unit
Supply Voltage	VCC	4.0	-	30	V
Operating Temperature Range	TOP	-55	-	150	°C
Output Voltage at 0°C	VOUT(0°C)	-	0	+0.2	V
Temperature Coefficient	α	9.0	10	11	mV/°C
Quiescent Current	IQ	40	60	100	μA
Impedance (Output)	ZOUT	-	0.5	-	Ω
Rise Time (25°C to 100°C)	tR	-	1	-	s
Fall Time (100°C to 25°C)	tF	-	1	-	s
Thermal Response Time	τ	-	0.5	-	s
Output Noise Voltage	VN	-	10	-	μVrms
Line Regulation	ΔVOUT/ΔVCC	-	0.01	-	%/V
Load Regulation	ΔVOUT/ΔIL	-	0.01	-	%/mA

Instructions for Use

1. Power Supply:

   • The LM35DZ/NOPB operates from a single power supply ranging from 4.0V to 30V.
   • Connect the positive terminal of the power supply to the V_CC pin and the negative terminal to the GND pin.

2. Temperature Measurement:

   • The output voltage of the LM35DZ/NOPB is directly proportional to the temperature in Celsius.
   • The output voltage is 10mV per degree Celsius (10mV/°C).
   • For example, at 25°C, the output voltage will be 250mV.

3. Output Connection:

   • Connect the output pin (V_OUT) to the input of your measuring device or ADC.
   • The output impedance is very low (0.5Ω), making it suitable for direct connection to most analog inputs.

4. Mounting:

   • Ensure the sensor is mounted in a location that accurately reflects the temperature you want to measure.
   • Avoid placing the sensor near heat sources or in areas with significant air currents, as this can affect the accuracy of the readings.

5. Calibration:

   • The LM35DZ/NOPB is factory-calibrated, but if higher precision is required, you can calibrate it using a known temperature reference.
   • Measure the output voltage at a known temperature and adjust your system accordingly.

6. Power Consumption:

   • The quiescent current is typically 60μA, making it suitable for battery-powered applications.
   • To further reduce power consumption, consider using a low-power mode or intermittent measurement techniques.

7. Noise Considerations:

   • The output noise voltage is typically 10μV_rms. If noise is a concern, use a low-pass filter or averaging techniques to improve signal quality.

8. Thermal Response:

   • The thermal response time is approximately 0.5 seconds, which means the sensor will reach 63.2% of the final temperature change within this time.
   • For faster response times, ensure the sensor is in direct contact with the medium being measured.

9. Operating Environment:

   • The sensor can operate in temperatures ranging from -55°C to 150°C.
   • Ensure the operating environment does not exceed these limits to avoid damage to the sensor.

10. Handling:

    • Handle the sensor with care to avoid mechanical stress, which can affect its performance.
    • Avoid exposing the sensor to harsh chemicals or environments that could corrode the pins or damage the housing.

By following these instructions, you can effectively use the LM35DZ/NOPB temperature sensor in your application.

(For reference only)