Two-wire digital temperature sensor TI LMT01. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

Two-wire digital temperature sensor TI LMT01

06.10.2015

Texas Instruments has introduced a new LMT01 digital temperature sensor with a resolution of over 0.1°C and operating on a two-wire line. The temperature is output as a number of pulses, which is directly proportional to the measured temperature. The result pulses go along the same lines as the sensor power supply. This method does not require the formation of precise delays and greatly simplifies the microcontroller program - it is enough to apply power to the LMT01 and then count the number of received pulses.

Depending on the temperature, LMT01 generates from 26 (-50°C) to 3218 pulses (+150°C). The value of each pulse is 0,0625°C. Pulses follow at a frequency of 88 kHz and can be counted in different ways: programmatically, in an interrupt from a signal change on the port, or using a timer in counter mode.

The accuracy of LMT01 temperature determination is not worse than 0,5°C in the range -20...90°C (0,7°C in the entire range from -50°C to 90°C). The sensor consumes only 34µA during the conversion, which takes a maximum of 54ms, after which the LMT01 outputs the conversion results for a further maximum of 50ms. Thus, the full cycle "measurement-reading" fits into 104 ms (max.), while the pulse current does not exceed 143 μA, which allows LMT01 to be successfully used in battery devices. Sensor supply voltage from 2 to 5,5 V (between Vp and Vn pins).

Due to the digital nature of the measurement, LMT01 is not sensitive to interference and can be placed up to 2 meters from the device. The number of pulses issued is converted into a temperature value using a simple formula:

Temperature (°C) = (Number of pulses / 16) - 50

In its ideology, LMT01 is close to the popular DS18B20 sensor, but surpasses it in ease of control, accuracy, current consumption and conversion speed.

<< Back: ASUS X99-WS/IPMI motherboard with remote control system 07.10.2015

>> Forward: Irradiation and brain genes 06.10.2015

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

energy from the ear 06.03.2021

Experts have discovered a new power source, which is convenient because it is always near you and never runs out of power. Moreover, you yourself are such a source of nutrition, or rather, your inner ear.

Scientists from the Massachusetts Institute of Technology were able to learn how to turn the cochlea of the inner ear of mammals into a source, albeit a small one, but still energy. The cochlea is a tube coiled and filled with liquid.

It is with its help that all mammals perceive sounds, and a small amount of energy is produced in it. For example, a guinea pig snail is capable of generating an electric current of up to 28 milliamps, and a voltage of 30 to 55 volts. In order to collect information about the electricity generated by the guinea pig's snail, experts designed a special chip measuring 9 by 11 millimeters.

This small device ran on the energy generated by the inner ear for 5 hours, transmitting all the necessary data to scientists at a frequency of 2,4 gigahertz. This technology could help scientists invent microscopic hearing aids or stapes prostheses that will be powered directly from the energy of the inner ear.

In the future, this can make a real breakthrough in the treatment of hearing diseases, and defeat deafness, from which more and more people suffer every year. True, so far, experts have not figured out how to implant electrodes into the cochlea safely for hearing. And until this problem can be dealt with, all work in this direction will not move beyond experiments on laboratory animals.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews