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Shunt-based current sensor supports solar inverter applications Measurement technology specialist Isabellenhütte has developed a current sensor in the low-amperage range which is ideal for use in frequency converters for industrial applications and solar inverters. The ILF current sensor covers a measurement range of up to 60 amperes and displays the flowing current via the corresponding voltage value on the analog output. Thanks to its compact IC housing, the ILF current sensor is ideal for SMD mounting. The ILF’s current measurement is based on Isabellenhütte’s proven shunt technology. Conventional current sensors in the same measurement range are based on the magnetic principle. Using shunt technology method, a current is detected by the magnetic field of a live conductor. Compared to products that use the magnetic principle, shunt-based current measurement claims to be more accurate. ILF’s relative error amounts to deviation from the measurement value of less than one per cent over the entire measurement range. The ILF also ensures high continuous output, outstanding long-term stability and high continuous load and pulse capacity. The ILF is designed for two different current ranges: ± 60 amperes und ± 30 amperes. The device is compatible with supply voltages of 3.3 V or 5 V. The pins of the ILF sensor consist of two load current contacts as well as four signal and supply communication contacts. Isabellenhütte www.isabellenhuette.de Carbon nanobud films as thin as 23μm for haze-free touch interfaces Canatu’s latest offering includes a super-thin 23μm CNB conductive film to support thinner, sleeker touch devices. In emerging flexible devices the thin film substrate results in less stresses and better mechanical durability when implementing resistive or capacitive touch sensors. The new transparent film is over 50 % thinner than before, enabling 1-layer touch at 23μm and 2-layer touch at less than 100μm thickness, claims the company. This film complements a portfolio which now covers substrate thicknesses of 23μm, 50μm, 100μm and 130μm. The new CNB Film enables truly foldable touch devices, tested to withstand more than 150 000 bends at bending radii of less than 2mm. Because CNB thin film material has inherently zero reflections and zero haze, it offers excellent readability indoors and outdoors. Canatu Oy www.canatu.com Dual synchronous step-down DC/DC controller with PMBus LTC3887 is a dual output synchronous step-down DC/DC controller with I²C-based PMBus interface for digital power system management. The LTC3887 differs from the previously released LTC3880 with an enhanced feature set that includes a faster 70ms power-up time, higher output voltage capability and a fast ADC mode that provides an 8ms update rate for one parameter. For applications including high current ASIC, FPGA and processor supplies in telecom, datacom, computing and storage markets, LTC3887 enables digital programming and read back for real-time control and monitoring of critical point-of-load converter functions. Linear Technology www.linear.com Entry-level function generator integrates with wireless lab management With its latest product roll-out, the AFG1022 Arbitrary / Function Generator, instrumentation provider Tektronix addresses the entry-level market segment with deployments in education and basic testing. Nevertheless, the instrument boasts with advanced features like seamless integration with Tektronix’ TekSmartLab wireless lab instrument management system. As electronic systems continue to increase in speed and complexity, colleges and universities globally are looking to outfit labs with modern test instrumentation to better prepare students for the real world. With the the AFG1022, Tektronix offers educational institutions a complete set of affordable instruments including oscilloscopes, signal generators, digital multi-meters and power supplies, all tied together with TekSmartLab. Compared to scope-based signal generators or stand alone AFGs in its price class, the AFG1022 offers better performance and greater flexibility. Key performance specifications include dual-channel, 25MHz bandwidth with 1mVpp to 10Vpp output, 14-bit vertical resolution and 1μHz frequency resolution. It provides a 125 MS/s sample rate along with 64 MB of built-in non-volatile memory and USB memory expansion for user-defined waveforms. On the functionality side, the instrument offers 50 built-in standard function and arbitrary waveforms. Tektronix www.tek.com www.electronics-eetimes.com Electronic Engineering Times Europe April 2015 39


EETE APR 2015
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