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A2E_EETimes_2_375x10.87_A2.qxd 9/4/13 1:00 PM Noise cancellation speaker driver ICs U L T R A M I N I A T U R E produce zero audible hiss Surface Mount ams has introduced the AS3435 and AS3415 ANC speaker drivers designed Audio fornoise cancellation stereo headsets with zero audible hiss. The chips are also the industry’s first ANC (active noise cancellation) ICs to feature integrated bypass Transformers and Inductors Low Profile from .18"ht. See full Catalog immediately w ww.picoelect ronics. co m • Manufactured and tested to MIL-PRF-27 • Frequency range 20 Hz to 250 KHz • Power and EMI Inductors • Available from 100 milliwatts to 3 watts • Impedance from 20 ohms to 100 K ohms • Operating temperature -550C to +130oC (Class V, 155˚C available) • Low Profile from .18"ht. • Thru-Hole available Delivery-Stock to one week for sample quantities PICOElectronics, Inc. 143 Sparks Ave., Pelham, N.Y. 10803 www.picoelectronics.com E Mail: info@picoelectronics.com Pico Representatives Germany ELBV/Elektronische Bauelemente Vertrieb E-mail: info@elbv.de Phone: 0049 89 4602852 Fax: 0049 89 46205442 England Ginsbury Electronics Ltd. E-mail: rbennett@ginsbury.co.uk Phone: 0044 1634 298900 Fax: 0044 1634 290904 switches. The AS3435, for feedback systems, and AS3415, for feed-forward systems, incorporate new ultra-low noise amplifiers with a 900 nV input referred noise floor. The devices’ audio characteristics include 35mW stereo output power with THD+N of 0.1% into a 32Ω load and a typical signal-to-noise ratio of >110dB. The AS3435 and AS3415’s integrated bypass switches allow the music signal coming from the 3.5 mm audio jack to be routed through the ANC chipset without any power source connected to the device. By eliminating the external switch, this feature helps to reduce bill-of-materials cost and the size of the PCB. Featuring typical power consumption of 10 mW at 1.5 V in noise cancellation mode, either device can support operation for more than 100 hours from a single AAA battery. ams AG www.ams.com Durable magnetic rotary sensor enters mass production Alps Electric Europe has developed the RDCC0 Series rotary sensor for angle detection in devices such as foot controllers (pedals) for products like sewing machines, musical instruments and amusement machines. Many of the most commonly used rotary sensors are resistive sensors that perform detection through contact and their precision and durability can be improved only to a certain extent, limited by the effects of abrasion and noise caused by sliding. The RDCC0 Series noncontact magnetic rotary sensor uses of an ALPSdeveloped high-precision magnetic element for accurate angle detection, with a linearity of ±2%. The non-contact design eliminates contact abrasion, contributing to a long operating life of 10 million cycles, compared to one million cycles for normal rotary sensors. The RDCC0 Series comes with screw holes and a connector terminal on the side, for integrated into end products without a PCB. Alps Electric Europe GmbH www.alps.com Innovative data converter technology aims to revolutionize position and motion sensing solutions Texas Instruments claims to have ‘invented’ a new data converter category that uses coils and springs as inductive sensors to solve difficult system sensing problems. Claimed to be an industry’s first, the LDC1000 inductance-to-digital converter (LDC) can be used to create sensors using lowcost and readily available PCB traces or metal springs. Texas Instruments claims the LDC technology will enable sub-micron resolution in position-sensing applications with 16-bit resonance impedance and 24-bit inductance values. The LDC1000 offers reliability benefits because contactless sensing is immune to nonconductive contaminants, such as oil, dirt and dust, which can shorten equipment life. The technology allows flexible use of low-cost sensors, located remotely from the electronics, where PCBs cannot be placed. In addition, the technology requires no magnets and supports pressed foil or conductive ink targets. The LDC1000 consumes less than 8.5 mW during standard operation and less than 1.25 mW in standby mode. An evaluation kit is available, which includes an MSP430F5528 microcontroller. Texas Instruments www.ti.com www.electronics-eetimes.com Electronic Engineering Times Europe October 2013 45


EETE OCT 2013
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