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30 Dec 2014

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Vishay Intertechnology introduced a new automotive-grade IHLP® low-profile, high-current inductor with an industry-high continuous operating temperature range to +180°C. Offered in the 2525 case size with a low profile of 3.0 mm, the new Vishay Dale IHLP-2525CZ-8A provides a wide range of inductance values from 0.47 µH to 22 µH.

With a frequency range up to 1 MHz, the AEC-Q200-qualified device released today serves as a high-performing, space- and power-saving solution for voltage regulator modules (VRM) and DC/DC converters in high-temperature automotive applications. End products include engine and transmission control units, diesel injection drivers, entertainment and navigation systems, noise suppression for motors, windshield wipers, HID and LED lighting, heating and ventilation blowers, and power seats and mirrors.

New Vishay Intertechnology Automotive-Grade Low-Profile, High-Current Inductor Offers Continuous High-Temperature Operation to +180°C - [Link]

22 Dec 2014

obr1646_1

Moreover, new UMTS/HSPA module Quectel UG95 is pin-compatible with GSM/GPRS module M95 thus offering extraordinarily simple way to migrate to 3G without a PCB redesign.

To have a possibility to choose a component on a given PCB place according to our wish is certainly advantageous. For example in audio equipment to use a simple operating amplifier (for less demanding applications) or in other case to use a pin-compatible high-end operating amplifier for more demanding applications (on the same PCB position). This compatibility is common in some fields, in other ones not that much …

In a segment of GSM/GPRS/UMTS modules is this compatibility a sort of an exception, so arrival of the new Quectel UG95 module on the market can be an interesting solution how to use the same design for smaller GSM/GPRS/EDGE connection (with the M95 module) and also for a substantially faster UMTS/HSPA connection with the UG95 module.

Do you use 2G module M95 and you wish for a higher transfer speed?

UG95 offer extraordinary possibility to design your device able to work with M95 or also with UG95 module. UG95 features more pins than M95 but their position is compatible, so at a PCB design it´s possible to place all pins on a PCB and their real use will depend on whether you´ll use M95 or UG95.In result it´s possible to assemble the same PCB with M95 or UG95 module according to given application requirements.

UG95 is based on a new Intel XMM6255 chipset. In general, UMTS/HSPA transfer offers not only a higher transfer speed of pictures and data but mainly higher reliability of connection even in hazard conditions. That can be very important for critical applications like telemetry, process control, security and similar. Because from a new module we usually expect enhanced functionality, even in this field the UG95 has what to offer, for example:

  • rich set of internet protocols – TCP/UDP/PPP/MMS*/SMTP*/FTP*/SSL* (*-in development)
  • standard industrial interfaces – USB 2.0/UART/I2C/PCM
  • high sensitivity and top-class audio algorithms, digital audio output (PCM)

New module is available in a form of the module itself – UG95EA-02-NCH-STD (suitable for a mass usage into a target appliance) and also in a form of a known „adapter board“ UG95-TE-A mainly intended for development using the UC20EVBKIT development kit.

Detailed information will provide you the UG95 presentation, UG95 specification and the document Quectel UG95&M95 compatible design.


UMTS module UG95 = reliable transfer even in hazard conditions - [Link]

19 Dec 2014

VoiceSolutionBlockDiagram

by elektor.com:

Lattice Semiconductor has developed two power-saving IP cores intended for use in smartphones and mobile devices. Known as ‘Voice Solution’ the two IPs are: Voice Command supporting hands-free and always-on applications, and Voice Recognition which improves the user experience by enhancing security and reducing false trigger inputs. They essentially act as a processing front-end, allowing the main processor to remain in low power dormant mode until voice commands have been processed and recognized by the Lattice Voice Processor.

Lattice FPGA Voice Processors - [Link]

17 Dec 2014

SO6L-4pin

Toshiba America Electronic Components, Inc. (TAEC) announced the launch of a new transistor output photocoupler in a low-height SO6L 4 pin package – the TLP385. With its low-height of 2.3 mm (max), 45 percent lower than DIP4 packages, the TLP385 can be used in situations with strict height requirements. Applications including motherboards, programmable logic controllers, AC adapters, I/O interface boards, inverter interfaces and general purpose power supplies are suited to the new photocouplers.

Toshiba’s new photocoupler has an isolation specification equivalent to DIP4 F (wide lead) type package products, and provides a creepage and clearance distance of 8 mm (min) and isolation voltage of 5 kVrms (min).

Toshiba Introduces New Low-Height Transistor Output Photocoupler - [Link]


16 Dec 2014

nr141211

by Susan Nordyk @ edn.com:

International Rectifier’s IRFH4257D is a 25-V dual N-channel power MOSFET housed in a 4×5-mm PQFN power-block package aimed at 12-V input DC/DC synchronous buck applications, such as telecom equipment, servers, graphic cards, and computers. With this latest power-block addition, designers now have the option of choosing a 4×5-mm or 5×6-mm PQFN to suit their design requirements.

Dual MOSFET squeezes into PQFN package - [Link]

3 Nov 2014

article-2014october-mems-oscillators-challenge-fig2

by Bill Schweber @ digikey.com:

With very few exceptions, every electronic circuit needs an oscillator, also referred to as a clock, clock generator, or timing circuit. Its role is to provide the “heartbeat” for the processor, memory functions, communications ports, A/D and D/A converters (if any) and many other functions. In non-critical, low-budget situations such as $10 mass-market electronic thermometers, this clock may be made from a simple resistor/capacitor (RC) oscillator. However, for the vast majority of situations which are more critical, the oscillator is based on a quartz crystal (Figure 1). This is a mature (80+ years) and highly effective technology which can support of wide range of frequencies from kHz to hundreds of MHz, with performance spanning fairly good to excellent, depending on the crystal cut, fabrication, packaging, and other considerations.

MEMS Oscillators Challenge Quartz Crystals in RF Applications - [Link]

15 Oct 2014

obr1600_1

80 dB acoustic signal at only 3V power supply and a really miniature size place this new component into a top class.

Belgian company Sonitron and its top-level products ar probably familiar to you from our articles and from our offer in this segment. We continue in increasing of standard stock types and this time we have here an extraordinary interesting type – SMA-13LV, interesting mainly for low-voltage applications. Series of buzzers marked as “SMA” is known by its variousness, as we find here types with loudness of 75-98 dB, THT and SMT vesions, and versions with a stable, as well as intermittent signal. Various izes from 13 to 30 mm with a pitch of 7.5 to 20.32 mm enable to select the right type for a given application. In general, bigger types provide a more loud signal, but it depends on a concrete type. This series is suitable for general use – everywhere, where a reliable buzzer is necessary, including industrial conditions.

For a succesfull use, it´s only necessary to connect a suitable supply voltage – usually in extremely wide range (for example 1.5-15V). Usually, on the upper end of a supply voltage range we get the highest loudness and at lower voltages we receive a higher lifetime.

Very similar is also the SMAT series (transducers), which in contrast to the SMA series doesn´t contain a driver, that´s why it needs an extenal electronics.

For really tough conditions, the Sonitron SAP. series is suitable. These are buzzers for various usage in traffic, for example as a reverse movement indicator (danger of close approximation). They excell in extreme rigidity, what make them widely used even in avionics, miltary and trucks. SAP series has a specifi usage, that´s why we keep these types as items upúon request.

Another novelties in our standard stock offer can be found below this article. Detailed information can be found in datasheets at particular types and in the new Sonitron 2014 catalogue.

Piezo buzzer Sonitron SMA-13LV deploys maximum from a minimum - [Link]

11 Oct 2014

avoid_aluminum_capacitor_pitfalls_fig1

by Robert Kollman @ edn.com:

Aluminum electrolytic capacitors remain a popular choice in power supplies due to their low cost. However, they have limited life and are sensitive to both hot and cold temperature extremes.

Aluminum electrolytic capacitors are constructed with foils placed on opposite sides of paper saturated with an electrolyte. This electrolyte evaporates over the capacitor’s lifetime, altering its electrical properties. If the capacitor fails, it can be spectacular as pressure builds up in the capacitor, forcing it to vent a combustible and corrosive gas.

Avoid these common aluminum electrolytic capacitor pitfalls - [Link]

10 Oct 2014

advanced_capacitors_ensure_control_stability_fig2

by Radovan Faltus @ edn.com:

To meet the demanding performance and harsh environmental conditions of automotive applications, component manufacturers have developed professional-grade tantalum capacitors that ensure long-term electrical performance stability. The professional tantalum technology satisfies the automotive industry’s need for rugged capacitors that maintain high-performance standards under electrical and mechanical stress. Technical improvements have been made that strengthen the structure of the capacitor and give it more robust performance in a variety of applications.

Advanced capacitors ensure long-term performance stability - [Link]

8 Oct 2014

MP23AB02B

by Graham Prophet @ edn.com:

STMicroelectronics’ MP23AB02B MEMS microphone maintains ultra-low distortion at less than 10% up to very high external sound-pressure levels, enabling equipment such as smartphones and wearable devices to perform better when placing calls or recording audio in loud environments.

With acoustic overload level of 125 dB SPL and signal-to-noise ratio of 64 dBA, the 3.35 x 2.5 x 0.98-mm microphone employes ST’s dedicated preamplifier design, which prevents saturation of the output signal even when background-noise levels are high, such as in concert venues, bars or clubs, or if the user is speaking loudly close to the microphone. In addition, omnidirectional sensitivity ensures overall performance and versatility in mobile applications.

Smart MEMS mic hears better in loud environments - [Link]



 
 
 

 

 

 

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