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TI LM35DZ/NOPB
LM35DZ/NOPB belongs to TI LM35 series precision integrated‑circuit temperature sensor. It adopts TO‑92 3‑pin through‑hole package, simple peripheral circuit, easy for breadboard and PCB layout. Output voltage is strictly proportional to Celsius temperature with scale factor 10 mV per degree Celsius, users can calculate temperature value directly from output voltage without complex conversion algorithm.
Operating temperature range 0°C ~ +100°C, typical accuracy ±0.5°C at 25℃. Operating supply voltage ranges from 4V to 30V, quiescent current is less than 60μA, suitable for battery‑powered equipment. Low self‑heating feature only causes 0.08°C temperature rise under static air condition, guarantees measuring reliability.
Pin assignment: Pin1 V+, Pin2 GND, Pin3 Vout. It features low‑impedance output, convenient to connect with MCU ADC port. No extra signal conditioning circuit is required for normal‑range temperature testing.
Typical applications include environmental temperature monitoring, experimental equipment, home appliance temperature detection, Arduino‑based development, remote temperature sensing and general‑purpose industrial temperature collection. Proper heat dissipation shall be considered for high‑temperature working environment to avoid measurement deviation。
1. Precision Celsius‑Calibrated Analog Temperature Sensor LM35DZ/NOPB is a popular precision analog temperature sensor from Texas Instruments. The output voltage is linearly proportional to Celsius temperature with standard 10mV per °C gain. It is factory‑calibrated in Celsius scale, no external trimming or calibration required for general‑purpose measurement, greatly simplifies ADC reading and firmware conversion work for MCU systems德州仪器。
2. Excellent Measurement Accuracy & Low Self‑Heating Performance Typical accuracy ±0.5℃ at 25℃, ±0.75℃ full‑range error. Quiescent current less than 60μA, ultra‑low self‑heating effect only 0.08℃ under still air, avoiding measurement deviation caused by chip self‑heat. Low output impedance guarantees stable signal transmission for remote temperature‑sensing scenarios。
3. Wide Supply Voltage & Simple Peripheral Circuit Operating supply voltage from 4V up to 30V DC, supports single‑power‑supply system design. Only three pins: power supply, signal output and ground. Minimal external components needed, easy for prototype development and mass‑production PCB layout. TO‑92 through‑hole plastic package, convenient for manual soldering and through‑hole assembly。
4. Stable Analog Output for MCU & ADC Interface Linear analog voltage output can directly connect to ADC channels of Arduino, STM32, Raspberry Pi and other microcontrollers. Non‑linearity error is only ±0.25℃ typical value, delivering repeatable temperature‑reading results for continuous monitoring tasksTexas Inst...。
5. Mature Universal Sensing Component Widely adopted for new‑product design, experimental development and BOM replacement. RoHS compliant, well‑stocked worldwide for industrial control, household appliances and educational project material matchingTexas Inst...。
Item | Specifications |
|---|---|
Part Number | LM35DZ/NOPB |
Product Series | LM35 Precision Centigrade Temperature Sensor IC |
Manufacturer | Texas Instruments |
Measuring Range | 0℃ ~ +100℃ |
Output Type | Linear Analog Voltage, 10mV/°C |
Typical Accuracy | ±0.5℃ @25℃, ±0.75℃ full range |
Non‑linearity | ±0.25℃ Typical |
Supply Voltage | 4V ~ 30V DC |
Quiescent Current | <60μA |
Self‑Heating | 0.08℃ (Still Air) |
Package | TO‑92 3‑Lead Through‑Hole |
Pin Definition | Pin1:V+; Pin2:GND; Pin3:Vout |
Mounting Style | Through Hole |
Compliance | RoHS, REACH Compliant |
Core Advantages | Factory Celsius calibrated, linear 10mV/°C output, low self‑heating, wide voltage input, simple peripheral circuit, low‑cost TO‑92 package, easy ADC interface |
Application Grade | Industrial Temperature Monitoring, HVAC Control, Environmental Detection, Embedded Thermal Protection, Educational Development Platforms, BOM Replacement & Equipment Refurbishment |
1. Industrial Temperature Monitoring & Process Control Real‑time temperature acquisition for industrial equipment, analog temperature feedback for PLC and control units, over‑heat protection module for power devices.
2. HVAC & Environmental Monitoring Equipment Temperature detection for ventilation, air‑conditioning systems, indoor and cabinet ambient temperature measuring devices.
3. Embedded System & Electronic Device Thermal Protection Thermal monitoring for power supply unit, battery management system, automatic temperature alarm and fan‑control trigger circuit.
4. Educational & Prototype‑Verification Projects Classic temperature‑sensor component for Arduino, STM32 experimental platforms, widely used for student development and prototype validation.
5. BOM Maintenance & Legacy‑Equipment Repair Standard replacement IC for old‑version temperature‑measuring equipment repair, convenient for electronic component stocking and project material matching。
