LM335Z

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LM335Z

+BOM

SENSOR ANALOG -40C-100C TO92-3

  • ManufacturerTexas Instruments

  • Mfr. Part #LM335Z

  • In Stock3758

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Specifications

Attribute Value
Part Status Obsolete
Base Product Number LM335
Sensor Type Analog, Local
Sensing Temperature - Local -40°C ~ 100°C
Output Type Analog Voltage
Resolution 10mV/°K
Accuracy - Highest (Lowest) ±6°C (±9°C)
Test Condition 25°C (-40°C ~ 100°C)
Operating Temperature -40°C ~ 100°C
Mounting Type Through Hole
Package TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package TO-92-3
Packaging Box

Overview

Description

The LM335Z is a precision temperature sensor widely used for measuring temperature in electronic applications. It operates as a temperature-dependent voltage source, outputting a linear voltage proportional to the absolute temperature in Kelvin. The LM335Z typically outputs 10 mV per Kelvin, allowing for easy conversion to Celsius or Fahrenheit. For example, at 25°C (298.15 Kelvin), it outputs approximately 2.98 volts.
This sensor is notable for its accuracy and wide operating temperature range, typically from -40°C to +100°C. It is designed for easy interfacing with microcontrollers or other monitoring systems due to its simple three-pin configuration: one pin for ground, one for output voltage, and one for supply voltage, usually ranging from 4V to 30V.
The LM335Z is versatile, making it suitable for various applications, including environmental monitoring, industrial controls, and consumer electronics. Its ease of calibration, high reliability, and low cost make it a popular choice for both hobbyists and engineers looking for precise temperature measurement solutions.

Equivalent

The LM335Z is a precision temperature sensor. Equivalent products include:
1. LM35 series (e.g., LM35DZ) - Similar temperature sensors with different calibration.
2. TMP36 - Analog temperature sensor with low voltage operation.
3. MCP9700/9701 - Low-power analog temperature sensors.
4. DS18B20 - Digital temperature sensor with 1-Wire interface.
5. TMP37 - Similar to TMP36, with a different temperature range.
These alternatives offer similar functionalities with varying specifications and interfaces.

Features

The LM335Z is a precision temperature sensor that provides a linear voltage output proportional to the Kelvin temperature. Key features include:
1. High Accuracy: Provides accurate temperature measurements with a typical error of ±1°C.
2. Wide Temperature Range: Operates effectively over a broad range from -40°C to +100°C.
3. Linear Output: Delivers a voltage output of 10 mV/°K, making it easy to convert voltage readings to temperature values.
4. Easy Calibration: Offers simple calibration options to enhance accuracy further.
5. Low Cost: Economical solution for temperature sensing applications.
6. Versatile Package: Available in a TO-92 package, suitable for various applications and easy to handle.
7. Low Power Consumption: Efficient power use, beneficial for battery-powered devices.
8. Robust Design: Durable and capable of functioning in various environmental conditions.
This sensor is ideal for applications requiring precise temperature monitoring, including environmental controls, home automation, and industrial systems.

Pinout

The LM335Z is a precision temperature sensor with 3 pins. Its primary function is to provide an analog voltage output that is linearly proportional to the temperature in Kelvin. Here's a brief description of its pin configuration:
1. Pin 1 (V+): This is the positive supply voltage pin. The device is typically powered with a voltage supply ranging from 4V to 30V.
2. Pin 2 (GND): This is the ground pin, which should be connected to the system ground.
3. Pin 3 (Vout): This is the output voltage pin. The sensor provides a linear output of 10 mV per Kelvin, allowing for easy conversion of the output voltage to temperature readings in Kelvin.
The LM335Z is commonly used in applications requiring precise temperature measurements, such as environmental monitoring, industrial processes, and consumer electronics. Its ease of use and accuracy make it a popular choice for temperature sensing applications.

Manufacturer

The LM335Z is a precision temperature sensor manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. It designs and manufactures a variety of analog and embedded processing chips. TI is known for its focus on innovation and technology development, providing products and solutions that enable innovation in electronics across various industries, including automotive, industrial, personal electronics, communications, and enterprise systems.

Application

The LM335Z is a precision temperature sensor used in various applications. It provides accurate temperature readings by outputting a voltage directly proportional to the temperature in Kelvin. Common application areas include HVAC systems for climate control, weather monitoring stations, and industrial process control where precise temperature measurements are crucial. It's also used in consumer electronics for thermal management, scientific research for temperature monitoring, and automotive systems for engine and cabin temperature sensing. The LM335Z's ease of integration with microcontrollers makes it popular in DIY electronics projects and embedded systems for developing custom temperature measurement solutions.

Package

The LM335Z is a precision temperature sensor available in a TO-92 package type. This package is a small, plastic, and inexpensive form factor commonly used for transistors and other small-signal devices.

Frequently Asked Questions


Q: What is the output scale factor of the LM335Z temperature sensor?
A: The LM335Z provides an analog voltage output with a linear scale factor of 10mV per degree Kelvin (10mV/°K).


Q: What is the local sensing temperature range for this device?
A: The LM335Z can sense local temperatures from -40°C up to +100°C with a typical operating range matching this span.


Q: How accurate is the LM335Z at 25°C test condition?
A: At 25°C, the highest accuracy is ±6°C, while the lowest accuracy over the full range (-40°C to 100°C) is ±9°C.


Q: Is the LM335Z suitable for board-level mounting on a PCB?
A: Yes, it features a through-hole mounting type in a standard TO-92-3 package, ideal for breadboard and PCB prototyping.


Q: Can I use this sensor to directly read Centigrade (Celsius) temperature?
A: Yes, by calibrating the 10mV/°K output to 0V at 0°C (273.15K), it can be configured for direct Celsius reading with external circuitry.


Q: What is the output type of this part for system interface?
A: The LM335Z outputs an analog voltage, which is directly proportional to absolute temperature, requiring an ADC for digital systems.


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