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LM35DZ

Analog temperature sensor, 10mV/C, +/-0.5C accuracy, 4-30V, TO-92

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Manufacturer Part：

LM35DZ

Package：

TO-92-3

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Description

Product Overview

The LM35DZ from Texas Instruments is a precision centigrade temperature sensor with 10mV/C linear output and 0.5C accuracy at 25C. Operating from 4V to 30V, it requires no external calibration and outputs an analog voltage directly proportional to temperature. Packaged in TO-92-3.

Key Specifications

Output 10mV/C (linear analog)
Accuracy (at 25C) +/-0.5C (D grade)
Temperature Range 0 to +100 C (D grade)
Supply Voltage 4V to 30V
Quiescent Current 60uA (typ)
Output Impedance 0.1 Ohm (typ)
Package TO-92-3
Operating Temperature 0 to +100 C

Features

  • Directly calibrated in Celsius (0mV at 0C)
  • +/-0.5C accuracy at 25C (D grade)
  • Linear output: 10mV/C
  • Low impedance output: 0.1 Ohm
  • No external calibration required
  • Suitable for remote applications

Applications

  • Environmental temperature monitoring
  • Battery temperature management
  • HVAC control systems
  • Industrial process control

The LM35DZ from Texas Instruments is a precision integrated-circuit temperature sensor whose output voltage is linearly proportional to the Celsius temperature. The LM35DZ does not require any external calibration to provide typical accuracies of +/-0.5C at 25C. It outputs 0mV at 0C and 10mV per degree Celsius, enabling direct interface with ADC or comparator inputs without complex signal conditioning. The low output impedance of 0.1 Ohm and linear output eliminate the need for additional circuitry. The 60uA quiescent current makes it suitable for battery-powered applications. The D grade operates from 0C to +100C.

The LM35DZ uses a pair of transistors operating at different current densities to generate a voltage proportional to absolute temperature (PTAT). The difference in base-emitter voltage (delta VBE) between the two transistors is proportional to absolute temperature and is amplified and level-shifted to produce a 10mV/C output referenced to 0V at 0C. The internal circuitry includes precision resistors for calibration and a buffer amplifier for low output impedance. The device is trimmed during manufacturing to achieve the specified accuracy without external adjustment.

Pin Name Function
1 VCC Supply voltage (4-30V)
2 VOUT Analog output (10mV/C)
3 GND Ground
  • Environmental temperature monitoring with direct 10mV/C analog output
  • Battery pack temperature management in UPS and EV systems
  • HVAC zone temperature sensing with +/-0.5C accuracy
  • Industrial process control with simple ADC interface (0-1V for 0-100C)
Model Manufacturer Key Difference
LM35CAZ TI +/-0.2C accuracy, SOT-23
LM34DZ TI Fahrenheit output (10mV/F)
DS18B20 onsemi Digital 1-Wire, 0.5C accuracy
TMP36GT9 ADI 500mV offset, 10mV/C, -40-125C
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Contact Information

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Tel / WhatsApp: +86 13760382860

Service & Packaging

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Contact Information

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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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