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INFRARED LEDS, INVISIBLE DRIVERS OF OPTELECTRONICS COMPONENT MARKET O


ver the past 10 years, visible light- emitting diodes (LEDs) have been


adopted widely in many applications, as prices have fallen and new technologies have been developed. The Infrared LED market is now also experiencing a similar increase. The market for infrared ambient light and proximity sensors was expected to continue growing very quickly in the near future; however, it is now expected to slow down significantly, as the market for sensors in tablets and smartphones begins to saturate. But the market for infrared


components is still expected to grow from $1.3 billion in 2014 to $1.5 billion in 2020. So where is this growth coming from? The answer lies in the market for infrared LEDs, photodiodes, and phototransistors. Infrared LEDs have in the past been


used in a variety of applications, mostly in remote controls for consumer goods. But over the past few years, there has been a huge increase in the popularity of consumer do-it-yourself (DIY) security cameras. Each of these cameras has a number of rings of infrared (IR) LEDs, to


provide night vision capabilities, meaning that in each camera sold, there could be anywhere from 10 to 50 IR LEDs. Despite gains in security cameras, the real growth potential lies in the automotive market. Over the past 10 years, many leading automotive manufacturers have increased the number of sensors and “smart” capabilities into their vehicles. Many newer technologies such as rain,


light and tunnel sensors now come as standard on many vehicles. Over the next


six years, with the emergence of more smart technologies and the focus of many consumers on safety and security, the market for IR LEDs, photodiodes and phototransistors can only increase. However the market for visible LEDs is


more than 10 times the size of the market for IR LEDs, meaning that whatever happens to the market for IR LEDs, the effects on the wider optoelectronics industry will still be dictated by the behaviour of the visible LED market. www.ihs.com


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STEP-DOWN DC/DC CONVERTER ADDRESSES AUTOMOTIVE REQUIREMENTS


A 42V input capable, high efficiency quad output synchronous monolithic step-down switching regulator has been released by Linear Technology Corporation. The LT8602 features a


quad channel design that combines two high voltage 2.5A and 1.5A channels with two lower voltage 1.8A channels to provide four independent outputs, delivering voltages as low as 0.8V. Its synchronous rectification topology delivers up to 93% efficiency while Burst Mode operation keeps quiescent current under 30µA (all channels) in no-load standby conditions, making it ideal for always-on systems. For noise-sensitive applications, this


device utilises its pulse-skipping mode to minimise switching noise and meet the CISPR25, Class 5 EMI requirements.


Switching frequency can be programmed from 250kHz to 2.2MHz and is synchronisable throughout this range. The LT8602’s 60ns minimum on- step-


time enables 16VIN to 0.8VOUT


down conversions while switching at 2MHz, enabling designers to avoid critical noise-sensitive frequency bands such as AM radio, while using a very compact solution footprint. Its 3V to 42V input voltage range makes it ideal for automotive applications that must regulate through cold-crank and stop-start scenarios. www.linear.com


Rochester Electronics has been licensed by Freescale to provide a continuing manufacturing solution for the company’s MC68040 32bit microprocessor product family. Freescale announced the discontinuation of the 68040 devices and will be shipping the last products they will produce until November 2015. The agreement between Freescale and Rochester provides customers of the legacy MPUs with access to a secure and reliable source of parts for continued product supply.


www.rocelec.com PRECISION POWER


s modern warfare evolves so must the technical innovations in the changing face of military and defence applications. This is resonated by the sophisticated array of solutions being released by the electronic component sector. Some of these latest releases are presented in this month’s issue in our military and defence supplement, ahead of the military and defence equipment show, DSEI. Also in this issue are focuses on test and measurement with a look at the importance of simulating real-world scenarios in the simulated test environment on p17 and focuses on power electronics on p18-19, embedded devices, p28-31 along with interconnection on p24. Michelle Winny - Editor


A


Yokogawa has enhanced its WT3000 precision power analyser to produce the WT3000E: a highly accurate and stable power analyser. The specified 45 to 65Hz accuracy is 0.01% of reading plus 0.03% of range. The company advises these figures are based on RMS values rather than waveform peak values. Because power ranges are the


multiple of the voltage and current ranges, the actual power measurement error due to an uncertainty of 0.03% of range in this instrument is less than 0.01% of range for a power meter based on peak values. These accuracy levels are


important for testing devices such as solar inverters, which are already working at overall efficiencies of 90-


4 JULY/AUGUST 2015 | ELECTRONICS


96%. To increase the efficiency, even by a few decimal points, is a challenging and important goal for the manufacturers, and the WT3000E provides the necessary levels of precision to truly confirm even the smallest improvements in efficiency. The focus on sustainable and


renewable energy has also raised the importance and need for manufacturers to comply with IEC standards during their product development. The WT3000E provides the flexibility to mix 30A and 2A input current elements, which enables users to test the compliance of their products with today’s harmonics, flicker and standby power standards in a single instrument. Like other models in this series, the


WT3000E has a variety of alphanumeric and graphic display formats, including the ability to display the input signal as waveforms for easy analysis. It also offers high- speed data updating which allows users to capture fast-changing transient signals with high precision. www.yokogawa.com


A highly integrated sensor interface analogue front end (AFE) has been introduced by Exar Corporation that provides calibration of sensor outputs. The XR10910 offers an onboard 16:1 differential multiplexer, offset correction DAC, programmable gain instrumentation amplifier and voltage reference. This AFE provides 14-bit signal path linearity and is designed to connect multiple bridge sensors to a microcontroller (MCU) or field- programmable gate array (FPGA) with an embedded ADC. The integrated, DAC provides offset calibration for any offset voltage generated by bridge sensors, improving overall system sensitivity and accuracy.


www.exar.com


Rolec’s tough new range of aluSMART aluminium enclosures features a hidden mounting bracket for swift installation and added security. The new aluSMART is similar to Rolec’s aluCLIC range (which has click-to-fit mounting) but offers the added strength of the concealed screw-in bracket. The enclosures are rated to IP 67 (IP 69K optional) for a wide range of demanding industrial electronics applications. ‘Go anywhere’ installation means they can be fitted to wall, bulkheads and machines.


www.rolec-enclosures.co.uk / ELECTRONICS


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