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Gallium Nitride FETs from Nexperia are efficient and effective high-power FETs

Posted on by mixos

Whether designing a motor drive/controller for the next generation of battery-electric vehicles, or a power supply for the latest 5G telecommunication networks, Nexperia’s GaN FETs will be key to your solution. Offering high power performance and high-frequency switching, the design and structure of Nexperia’s normally-off GaN FET products ensure standard, low-cost gate drivers can be used in your design.

Key features

  • VDS : 650 V
  • Threshold voltage: +4 V
  • Transient over voltage V DS : 800 V
  • VGS range: 20 V

Benefits

  • Easy to drive
  • Inherently safe against parasitic turn on
  • Reduced losses in reverse conduction mode
  • Ultra low Qrr for fast switching
  • Transient over voltage capability
  • Robust gate oxide

more information: www.nexperia.com

Small high-capacitance three-terminal MLCCs target automotive uses

Posted on by mixos

Murata Electronics today announced the availability of two new multilayer ceramic capacitors (MLCCs) for automotive safety-critical applications. The 0402-inch size (1.0×0.5mm) NFM15HC105D0G3D is the world’s smallest three-terminal low parasitic inductance (ESL) MLCC. The NFM18HC106D0G3L is also a three-terminal low-ESL MLCC but delivers the world’s highest capacitance of 10µF in a 0603 (1.6×0.8mm) package.

The NFM15HC105D0G3D is approximately 60 percent smaller than conventional solutions with the same capacitance. The NFM18HC106D0G3L features a capacitance 10 times higher than that of similarly-sized products. These advancements are achieved by coupling Murata’s proprietary thin-layer and high-precision lamination technologies with fine-particle and homogenization technology for ceramic and electrode materials. Compared with traditional MLCCs, the three-terminal structure and resulting low ESL allows automotive engineers to reduce the number of capacitors needed to realize their design goals. The reduced capacitor count not only increases overall system reliability but reduces size and assembly complexity.

The emergence of automotive technologies, such as advanced driver assistance systems (ADAS) and autonomous driving, has led to an increased number of microprocessors used in each vehicle. To ensure that these components work correctly, more and more MLCCs are being integrated. At the same time, there is also increased demand for automotive-grade capacitors that combine higher capacitance, a smaller footprint, and improved high-frequency characteristics with low ESL. Murata’s new solutions enable automakers to save valuable space and reduce the parts count while increasing reliability.

GWInstek C-1200 Multi-Channel LoRa Tester

Posted on by mixos

C-1200 is the first multi-channel LoRa-specific 1U rackmount tester for transmitter and receiver signal evaluation

Saelig Company, Inc. has introduced the GWInstek C-1200 LoRa Tester – a one-box tester that incorporates a multitude of LoRa transmit and receive tests. The C-1200 provides transmitter tests that include spectrum analysis, time domain, FEI (Frequency Error Indicator), and TOA (Time-On-Air).  LoRa Receiver tests include sensitivity, BER (Bit Error Rate), and PER (Packet Error Rate). In addition to sub-GHz frequencies, the C-1200 also supports the 2.4GHz band and the FSK signal test. Users can easily edit the transmitted test payloads.  Receiving data formats supported include binary/HEX, and ASCII code, which allows data transmission results to be easily verified.  A useful transfer box C-1201 is also available for easy connection of the C-1200 to a LoRa module being tested and controlled via UART/SPI/I2C interfaces.

The C-1200 can directly perform LoRa transmission signal measurement in the frequency domain as well as the time domain. In the frequency domain, LoRa’sCSS (Chirp Spread Spectrum) signal spectrum can be directly displayed; in the time domain, signal changes within a set time range can be displayed.

LoRa transmission signals may encounter a frequency error caused by environmental factors, resulting in a decreased sensitivity or loss of a packet. FEI can be used to measure the DUT transmission frequency error , so that adjustments or corrections for this error can be made during production or quality control, ensuring communication quality in deployed LoRa networks.  With four sets of half-duplex RF TRX test channels in the C-1200, it is ideal for end-of-line testing of LoRa products.

Since LoRa devices are usually located outdoors, even in remote areas, power consumption characteristics become an important part of the LoRa system. A setup with a C-1200 plus a PPH-1503 high-precision power meter or a GDM-9061 six-and-a-half digit digital meter can directly perform the power consumption test through the provided PC software, making the LoRa test even more comprehensive.

The dedicated test application software provided offers a wide range of accessible functions, allowing users to quickly become familiar with test operations. In addition to the complete RX and TX test functions, the MP (Mass Production) test can perform a large number of repetitive tests by selecting appropriate parameter settings to be tested in production-line environments. In the Spectrum Mode, users can perform US FCC 15.209/15.247 communications test regulations to ensure that the tested product complies with the communications rules both of Europe and the USA.

Housed in a 1U aluminum rackmount case and weighing 17lb, the 22” x 17” x 1.75” C-1200 LoRa tester is made by the Taiwanese test and measurement specialists GW Instek.

Fluke 365 – Industrial clamp multimeter with removable jaws

Posted on by mixos

AC and DC current measurement with a truly exceptional feature, removable jaws, for easy access to measured wires and comfortable monitoring of the display even in extremely tight spaces.

There are many “standard” clamp multimeter types on the market, and only a few of them step a bit out of the line because of their construction. These certainly include Fluke 365.

Miniature and, also, removable pliers connected to the instrument with a soft, flexible cable (90 cm) allow measurement even in areas where conventional pliers would be of no help. For example, in distribution boxes containing a big amount of cables, typical for industrial automation and solar segment.

Key features and benefits:

  • Measurement of AC and DC current 200 A (0.1A resolution)
  • Measurement of DC and AC voltage 600 V (0.1V resolution)
  • Resistance measurement (0.1Ohm resolution)
  • Detachable jaws facilitate access to the wires as well as viewing the display
  • Built-in luminaire allows lighting and identification of wires in the equipment
  • CAT III 600 V
  • Compact ergonomic design
  • EMC Immunity
  • State-of-the-art signal processing allows use in environments with high electrical noise
  • Large, easy-to-read backlit display
  • Automatic range selection
  • Fluke TL175 soft case and high-strength test leads included

Video

Find Fluke 365 in our SOSelectronics range.

For more information about FLUKE products, please do not hesitate to contact us at sales@soselectronic.com

3.5’SBC-PX30-TVI3329A – 3.5-inch SBC features Rockchip PX30

Posted on by mixos

Rockchip PX30 is the first Arm Cortex A35 processors from the company, and are designed for smart AI solutions such as smart speakers and smart displays. It usually be used in car infotainment systems, retail POS, advertising multimedia player. It turns typically PX30 car infotainment systems come with 2GB RAM, 16GB storage, a 7″ display with 1024×600 resolution, GPS location, WiFi and Bluetooth connectivity, optional 3G/4G support, and radio support with some models support DAB (Digital Audio Broadcast).And it also has dual VOP (Video Output Processor) support to handle up to two independent displays, as well as an Ethernet MAC and a USB host block.

Features

  • Rockchip PX30 3.5-inch SBC;
  • Max 4GB DDR3L & 64GB eMMC onboard;
  • Support eDP, Mipi_DSI & HDMI /LVDS display;
  • Support 2 independent displays;
  • Support I2C,GPIO,USB,RS232,Mini_PCIe slotinterface;
  • Support 2.4G/5G Wi-Fi, 3G/LTE & Ethernet connectivity;

For more details or customized requirements you can contact us info@techvision.com.cn or techvision.com.cn

Cost-effective air quality sensor functions with Raspberry Pi

Posted on by Tope Oluyemi

Metriful has announced a $39 “Sense” indoor air quality sensor module that functions with the Raspberry Pi and other I2C-enabled systems. The Covid-19 pandemic has led to most of the earth’s population being indoor, and for some especially less privileged they are stuck in crowded small apartments with poor air quality. However, the air quality outside has improved due to lesser emission of carbon mono-oxide and other free radicals.

Metriful met Kickstarter for launching, where it has created a cost-effective sensor board called Sense” which is an electronic sensor for home environment scanner. It functions by calculating the amount of pollution that enters the house. It also measures pollution from heating, ventilation, and AC. The sensor known as “sense” is also utilized for checking temperature, air pressure, light. Sense can be connected to Pi, Arduinos and other boards having I2C (Inter-Integrated circuit). Sense enables 3.3v and 5v, so it works with a broad variety of systems.

 

Sense Board details view

Based on a STM32 microcontroller, the 37.5 x 23.4 x 3.1mm version is designed with sensors from Bosch, Vishay, and other producers. The pivot is a Bosch BME680 metal-oxide gas that has high sensitivity and good safety function, its air quality sensor detects toxic volatile organic compounds. A design produces an air quality signal score which is based on the sum of volatile organic compounds and humidity situations from the separate humidity indicator. An algorithm then produces an approximation of volatile organic compounds from breath and the approximate amount of Carbon dioxide level. Sense has a pin header that is compatible with the Shinyei PPD42 air particulate matter indicator that calculates smoke and dust.

There are other sensors, which includes a temperature sensor and an air pressure barometer for detecting weather changes. Available also is a sound sensor that detects sound pressure levels, and peak sound amplitude, and a light sensor that can also detect white light levels. The Sense module offers on-demand or scheduled measurements, and enables automatic sensor setup and data analysis, with reports made available on a mobile app. There is also programmable light and sound interrupts available. Unique Features and Application Of Sense includes:

  • Automated indicator setup and data analysis on-board
  • Can be used for smart house technology
  • Used in computing data that is stored in the cloud, so the data can be viewed in other devices

There are other sensors that serve the purpose of detecting changes to the surrounding and compiles the information and send them to other electronics these are used to prevent interruption of power supply. Metriful posted set-up manual for Raspberry Pi and Arduino on Github and provides extra information. The Sense module is available starting at 31 Pounds ($39) with shipments due in September. More information can be found on the Sense Kickstarter page, GitHub page, and also the Metriful website.

Nordic Thingy:91 Cellular IoT Prototyping Kit

Posted on by mixos

Nordic Semiconductor’s multi-sensor kit supports LTE-M, NB-IoT, GPS, and Bluetooth low energy

Nordic Semiconductor’s Nordic Thingy:91 multi-sensor prototyping kit is ideal for cellular IoT projects using the nRF9160 system-in-package (SiP). The kit is equipped with a diverse collection of sensors and interfaces that make it highly adaptable to rapid prototyping and getting a user’s proof-of-concept off the ground quickly.

The Nordic Thingy:91 comes with a pre-loaded, feature-rich asset-tracking application that makes use of the on-kit sensors. LTE-M and GPS work from the device to the cloud and provides users with a working out-of-the-box asset-tracking and monitoring experience with the Nordic Thingy:91. The kit can be reprogrammed with the user’s dedicated application.

The Nordic Thingy:91 is built around the nRF9160 SiP. The nRF9160 has a separate application/radio modem architecture to aid development simplicity and the overall performance. The SiP incorporates the Arm® Cortex®-M33 as a dedicated application processor which is used solely for powerful application processing. The dedicated radio system can support LTE-M, NB-IoT, and GPS technologies for precise positioning. The nRF9160 SiP integrates a full front-end RF system with a complete power management system.

Security is critically important in IoT. The nRF9160 takes advantage of Cortex-M architectures by using Arm TrustZone® for secure boot and secure execution within the device. This technology has been the mainstay of secure operation in Cortex-A devices and is used to build secure operation in smartphones and tablets.

Features

  • Battery-operated prototyping platform for the nRF9160 SiP
  • LTE band support: 700 MHz to 900 MHz and 1,710 MHz to 2,200 MHz
  • Certifications: CE and FCC
  • nRF52840 multiprotocol SoC onboard
  • LTE-M, NB-IoT, and GPS antennas
  • Nano/4FF SIM card-slot
  • User-programmable button and RGB LEDs
  • Environmental sensor for temperature, humidity, air quality, and air pressure
  • Color and light sensor
  • Low-power accelerometer and high-g accelerometer
  • Buzzer
  • 4x NMOS transistors for external DC motors and LEDs
  • Rechargeable Li-Po battery with a capacity of 1,440 mA

The cellular IoT kit features Nordic Semiconductor’s flagship nRF52840 multiprotocol SoC for short-range applications. The nRF52840 supports a broad range of protocols including Bluetooth 5 and NFC. The Nordic Thingy:91 enables users to explore the exciting possibilities offered for short-range wireless applications when it is used in conjunction with cellular IoT technology.

The Thing:91 can leverage the nRF Connect SDK, where developers can begin building their short-range wireless applications. The nRF Connect SDK offers an extensible framework for building ultra-small applications in highly constrained circumstances and the ability to develop powerful, richly featured software for advanced applications. It integrates the Zephyr RTOS and a wide range of samples, application protocols, protocol stacks, libraries, and hardware drivers. The nRF Connect SDK is publicly hosted on GitHub, offers source code management with Git, and has free SEGGER Embedded Studio IDE support. For the Thingy:91, the nRF Connect SDK contains the needed software including protocol stacks.

more information: www.nordicsemi.com

World’s smallest ferrite chip beads target automotive power supply application

Posted on by mixos

Murata Manufacturing Co., Ltd. has introduced the BLM18SP_SH1 series of the world’s smallest chip ferrite beads (for noise suppression) for use in automotive power supply applications. The company has started shipping samples, and volume production is scheduled to begin in June 2020.

In recent years, in keeping with the progress of automobile electrification, cars have been equipped with an increasing number of electronic components such as cameras, radar, LiDAR and ECUs in order to support ADAS and autonomous driving. To ensure that the numerous in-vehicle components function properly and that a high degree of safety is maintained, it is essential to employ countermeasures against noise in power supply circuits and to ensure a stable power supply to each component. As the number of in-vehicle components increases, needs are growing for improved noise suppression capabilities as well as for miniaturization.

With a new structural design that utilizes internal electrode fabrication technology, the new series realizes improved impedance acquisition efficiency along with lower resistance, which leads to a large current. In addition, commercialized in 0603(1608) inch (mm) size (1.6mm × 0.8mm) package, this series has a 50% smaller base area compared to conventional products which are typically packaged in 0805(2012) inch (mm) size (2.0mm × 1.25mm). This provides manufacturers with more flexibility when designing automotive power supply circuits and helps to support more sophisticated autonomous driving with smaller in-vehicle components.

In addition to this series for automotive power supply applications, Murata has two other series in 0603 inch size—the BLM18SP_SZ1 series for in-vehicle infotainment and the BLM18SP_SN1 series for consumer devices. Going forward, we will continue to develop products which meets the needs of the market and contribute to enhancing automotive performance and functionality.

more information: www.murata.com

Infineon Technologies S2GO MEMSMIC IM69D Shield2Go Board

Posted on by mixos

Infineon Technologies S2GO MEMSMIC IM69D Shield2Go Board is a “plug and play” prototyping board based on the Shield2Go Evaluation Environment, and featuring two IM69D130 High-performance Digital MEMS Microphones.

Infineon Technology IM69D130 is a High-performance Digital MEMS Microphone making use of Infineon’s Dual Backplate MEMS technology to deliver 105dB dynamic range and high output linearity up to 130dBSPL. The IM69D130 is designed for applications where low self-noise (high SNR), wide dynamic range, low distortions, and a high acoustic overload point is required.

Shield2Go

Infineon Technologies Shield2Go Boards are equipped with one featured Infineon IC and provide a standardized form factor and pin layout for fast orientation. All Shield2Go Boards come with solderless connectors allowing designers to stack the boards instead of soldering them. This makes the Shield2Go boards simple, reusable, and flexible.

In addition, each Shield2Go comes with a dedicated and free software library for Arduino. The Shield2Go Boards are compatible with Arduino Uno when used with the Infineon My IoT Adapter. This combination of flexible hardware components and accompanying software speeds up the prototyping process.

Features

  • 2x IM69D130 Digital MEMS microphone in stereo mode configuration
    • Dynamic range of 105dBSignal to noise ratio of 69dB(A) SNR
    • <1% total harmonic distortions up to 128dBSPL
    • Acoustic overload point at 130dBSPL
    • Sensitivity (±1dB) and phase(±2° @1kHz) matched
    • Flat frequency response with low-frequency roll-off at 28Hz
    • Very fast analog to digital conversion speed (6µs latency @1kHz)
    • Power optimized modes determined by PDM clock frequency
    • Omnidirectional pickup pattern
  • Interface to Infineon My IoT Adapter
  • PDM and I2S output configuration
  • Flexibility to develop a custom application with Arduino or Raspberry PI

more information: www.infineon.com

ATtiny85 Audio Sample Player

Posted on by Emmanuel Odunlade

While the ATtiny series of microcontrollers have been around for a long time, their popularity until recently was low. DIY enthusiasts and Professional designers now use them in diverse projects, most of which, in the past, would have featured an Arduino or a bigger MCU like the Atmega328p. One of such amazing project is this simple but super-useful audio player who’s build process is published on technoloblogy.

The Audio player is based on an ATtiny85 and is able to play one of four audio samples from a DataFlash chip at the press of a button. It is an upgrade to an earlier project which played audio samples from the ATtiny85’s limited memory and output it to a loudspeaker.

The project uses a 4Mbyte DataFlash (W2Q32) chip available for around 20 pence/cents each AliExpress or eBay. The ATtiny85 reads the audio from the DataFlash chip and plays it through a loudspeaker, giving a maximum sample length of a total of 8 minutes and 44 seconds at a sample rate of 8kHz.

The entire project is powered by a 3.7V Lipo cell, as such, the DataFlash chip is disabled, and the ATtiny85 is put in Power Down mode when no audio is being played to save power.  The pushbuttons are connected to I/O pins on the ATtiny85, and the devices use pin-change interrupts to wake up the ATtiny85 and select the appropriate sample when the buttons are pressed.

The current setup allows users to play four different samples by pressing the corresponding buttons and one major advancement will be to programmatically use the buttons to loop through the samples rather than one button to play a tune. This will allow users to load as many audios as possible on the device.

The project is totally open-source and all design files including schematics, code, and a build guide, are available on the project’s page on technoblogy.

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