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EDNE JAN 2017

COVER FEATUREARTICLES EDN's columns Solid-state multi-ion sensor for IoT Researchers applications at Imec and Holst Centre (Leuven, Belgium, and Eindhoven, The Netherlands) believe they have a world-first with a miniaturized sensor that simultaneously determines pH and chloride (Cl-) levels in fluid. This innovation is a must-have for accurate long-term measurement of ion concentrations in applications such as environmental monitoring, precision agriculture and diagnostics for personalized healthcare. With the possibilities of SoC (system on chip) integration it may enable massive and cost-effective deployments in Internet-of-Things (IoT) settings. Its innovative electrode design results in a similar or better performance compared to today’s standard equipment for measuring single ion concentrations and allows for additional ion tests. Sensors based on ion-selective membranes, imec says, are considered the “gold standard” to measure ion concentrations in many applications, such as water quality, agriculture, and analytical chemistry. They consist of two electrodes, the ion-sensitive electrode with the membrane (ISE) and a reference electrode (RE). When these electrodes are immersed in a fluid, a potential is generated that scales with the logarithm of the ion activity in the fluid, forming a measure for the concentration. However, the precision of the sensor depends on the long-term stability of the miniaturized RE, a challenge that imec says has now been overcome. More, here. 3 EDN.comment Here’s listening to you, kid 5 Pulse Graphics architecture for “virtually unlimited” workloads; Wireless charging extended to 40W power levels; Intel packages CPUs, FPGAs as GO for automated driving; Altitude tracking MEMS sensor for consumer devices; NXP aims i.MX 8M processors for media tasks; ARM-based, multi-protocol SoC targets smart, secure homes; Raspberry Pi’s PIXEL desktop, now on x86/PC/Mac; Biometric sensor platform for wearables and IoT; Rohde & Schwarz preps testing for Bluetooth 5; Europe’s Galileo GNSS goes ‘live’; Software hardening to secure IoT devices; FPGAs for sensor signal processing at IoT edge; Multigigabit Ethernet chips route 5G data on Cat 5E wiring; Cryptographic controller for embedded devices; Bluetooth 5 spec released; ...and Nordic steps up with SoC 27 Analog tips Noise analysis of precision data acquisition signal chain by Maithil Pachchigar, Analog Devices 31 Product Roundup Arduino-compatible multi-sensor evaluation kit; ‘Retro’ solder tag prototyping for Raspberry Pi; Multiprotocol controller for home automation; MEMS sensors with compass for activity apps; 7th generation Intel Core on COM Express; Software client enables device-device IoT comms; Polyester substrates cut flex PCB costs; 320W DC/DC in Vicor mini module; Smart home reference designs; ARM-based starter kit is complete design environment; RTOS visualization tool looks deeper into running code; “EMC for Product Designers” in updated edition; SPI/I²C isolator with 5V regulators; 2.1-MHz class-D amp for automotive audio designs; Resistive RAM EEPROM improves embedded-system security 35 Late News Embedded Raspberry Pi, version 3 16 SiC retrofits rejuvenate older power systems by John Mookken, Wolfspeed 18 Putting the IoT in wearable healthcare designs by Andrew Baker, Maxim Integrated 20 Mechanical design tools for the nonspecialist CAD user by Joydipto Choudhuri, RS Components 22 10 + 1 steps to measuring power accurately by Anoop Gangadharan, Yokogawa 23 Phase stability measurement of a ranging tone by Francesco Spadaforaat and Giuseppe Savoia, Keysight Technologies 25 Noise sensitive applications need ultralow noise LDO regulators by Amit P. Patel and Steve Knoth, Linear Technology ONLINE THIS MONTH Utilizing GaN transistors in 48V communications DC-DC converter design White Paper; AnDapt: Introduction to configurable PMICs Optimising RS-485 for lowest EMI and lowest power 2 EDN Europe January 2017 www.edn-europe.com


EDNE JAN 2017
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