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Dual-function material conducts heat, absorbs EMI This hybrid materials product provides EMI mitigation while moving heat away from sensitive electronics; Laird has introduced the dual-function, board level material that simultaneously improves signal integrity and temperature stability of electronic circuits. CoolZorb 400 imparts thermal conductivity and EMI attenuation in the microwave frequency range with best performance at or above 5GHz. It also meets requirements of the UL94 V0 flammability standards. The material provides designers with much flexibility by improving signal integrity and temperature stability in a single solution that can increase the speed of the design cycle, simplify manufacturing processes and create material cost savings. CoolZorb 400 is a hybrid material that functions as both an absorber of Electromagnetic Interference (EMI) and a conductor of thermal energy. The product is used like traditional thermal interface material where it is placed between the heat source, such as an IC, and heat sink or other heat transfer device or metal chassis. The silicone-based material can simultaneously protect electronics from both EMI and heat. The product is available in sheet stock (12” by 12” size) and as cut parts to customer specifications. Standard sheet thicknesses are .020”, .040”, and .100” but other thicknesses can be made to order. Laird www.lairdtech.com Single-chip bridge links audio accessories to Apple iOS environment Silicon Labs has designed a digital audio bridge chip and evaluation kit designed to simplify the development of accessories for iOS devices. The CP2614 interface IC provides a turnkey audio bridge solution for a wide range of Made for iPod/iPhone/ iPad (MFi) devices that use the all-digital Lightning connector. The CP2614 bridge chip and MFI-SL-CP2614-EK evaluation kit provide a cost-effective development platform for iOS accessory developers, enabling fast time to market through fixedfunction MFi support. The CP2614 solution requires no firmware development, which helps developers get up and running quickly with their MFi accessory designs. Developers simply select their customisation options with an easy-to-use GUI-based configuration tool. Target applications include audio accessories such as guitar and microphone recording dongles, audio docks and headphones. The CP2614 IC also provides built-in support for communication between iOS applications and accessory hardware, enabling a broad array of IoT accessories that operate with a companion iOS app. The chip includes an integrated 5V low drop-out (LDO) regulator, which reduces bill of materials (BOM) cost and footprint for self-powered accessories. It operates without an external crystal or EEPROM, storing all configuration options on chip. The IC supports 24-bit unidirectional and 16-bit bidirectional digital audio streaming, enabling developers to create high-quality, high-performance prosumer-class audio accessories. It comes in a 5x5mm QFN32 package. Silicon Labs www.silabs.com/interface Arbitrary waveform generator addresses EMI testing EMC and EMI instrumentation provider Teseq AG has introduced an eight-channel arbitrary waveform generator designed for automotive EMI immunity testing. The ARB 5500 fits inside the company’s transient generator and features memory for over 64,000 standard waveform segments as well as 1 GB of Clone memory for user-defined shapes: enough memory for several thousand hours of simulations, the vendor promises. Available for both new systems as well as as an upgrade for existing NSG 5500 units, the ARB 5500 provides the necessary control for all battery simulation tests and advanced functions including power magnetics and continuous wave (ripple) simulations. According to Teseq, the ARB 5500 supports waveforms that may be difficult to describe and real-world events that need to be simulated. All vital waveforms can be created from the built-in wave shapes or by loading a Clone, a memory map of user-identified or prerecorded wave shapes, from an external application. In addition to individual trigger outputs and programmable current limits, each of the instruments’ eight channels supports 16-bit output with a 10 MS/s playback for continuously variable operation. The channels can be synchronized with a parameter-ramping function when paired with Teseq’s redesigned AutoStar 7 tool. Teseq AG www.teseq.com MLCCs target UHF band applications AVX Corporation claims to offer the highest Q 01005 MLCC available for ultra high frequency (UHF) band applications (300 MHz to 3 GHz). The first part number of the latest CU series ultralow ESR C0G (NP0) MLCCs, the CU10 01005 MLCC, exhibits typical Q values of 290 at 1 GHz for a 4 pF capacitance, which makes it ideal for reducing power consumption and improving battery efficiency in the high frequency power amplifier circuits within multifunctional and multiband RF communication devices, including: smartphones, tablets, handheld scanners, camera sensor modules, and telecommunications equipment. The CU series ultralow ESR MLCCs feature low-resistance internal copper electrodes and interior structures that have been carefully optimized to reduce resistance. The series also exhibits highly accurate and evenly distributed capacitances spanning 0.5 pF to 22 pF, which, combined with outstanding ESR, effectively mitigates impedance mismatching between circuits and subsequently preserves both power and battery life. The 01005 CU10 ultralow ESR MLCCs are available in 16 V ratings and with capacitance values spanning 0.5 pF to 22 pF. Intended for use in temperatures spanning -55°C to +125°C, CU series MLCCs are lead-free compatible and RoHS compliant, and are supplied with plated Ni/Sn terminations. AVX Corporation www.avx.com 38 Electronic Engineering Times Europe April 2015 www.electronics-eetimes.com


EETE APR 2015
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