LM235Z Precision Celsius Temperature Sensor 1°C Accuracy 2°C to 150°C Range

Product Specification

LM235Z Precision Celsius Temperature Sensor 1°C Accuracy 2°C to 150°C Range Linear 10mV/°C Output Easy Calibration Wide 4V-30V Supply Low Self-Heating TO-92 Package

Features

■ Directly calibrated in °K

■ 1°C initial accuracy

■ Operates from 450µA to 5mA

■ Less than 1Ω dynamic impedance

Applications

Temperature Measurement & Monitoring Systems

Used in industrial equipment, HVAC systems and other applications requiring precise temperature detection, featuring ±1°C high accuracy and linear output.

Automotive Electronics

Monitors engine temperature, cabin environment temperature, etc., supporting wide voltage range (4V-30V) and automotive-grade temperature requirements.

Consumer Electronics

Integrated into appliances (refrigerators, air conditioners) for temperature control, benefiting from low self-heating error and stable performance.

Medical Equipment

Used in thermometers, patient monitors and other devices requiring high temperature accuracy to ensure measurement reliability.

Data Acquisition Systems

Serves as front-end sensor for ADCs, providing linear 10mV/°C output to simplify signal processing circuit design.

Industrial Process Control

Used in PLC/DCS systems for process temperature monitoring, supporting extended -40°C to +125°C range (LM235AZ version).

Laboratory Instruments

Integrated into constant temperature baths, incubators, etc., achieving high-precision temperature control through single-point calibration.

Cost-Effective Temperature Sensing Solutions

Replaces complex solutions like thermocouples, with TO-92 package enabling easy prototyping and small-scale production.

Description

The LM135, LM235, LM335 are precision temperature sensors which can be easily calibrated. They operate as a 2-terminal Zener and the breakdown voltage is directly proportional to the absolute temperature at 10mV/°K.

The circuit has a dynamic impedance of less than 1Ω and operates within a range of current from 450µA to 5mA without alteration of its characteristics.

Calibrated at +25°C, the LM135, LM235, and LM335 have a typical error of less than 1°C over a 100°C temperature range. Unlike other sensors, the LM135, LM235, LM335 have a linear output.

INFORMATION

Drawing

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