http://us.ni.com/webcasts/sensor-measurement-fundamentals?espuid=CNATL000003946632
http://www.ti.com/lsds/ti/analog/sensors/overview.page
http://www.digikey.it/product-highlights/it/it/texas-instruments-sensing-solutions/3666
http://blog.elettronicain.it/2013/09/17/texas-instruments-rivoluziona-la-tecnologia-dei-sensori/