0603ESDA-TR1

Application Notes ESD Suppression ESD Protection of Set Top Appliances with PolySurg™ ESD Suppressors Why are Set Top boxes vulnerable to ESD The more sophisticated boxes include a variety of I/O jacks such as front panel USB, Audio/Video, S-Video, rear panel Satellite, cable, TV antenna, Wireless transmitter connection, home networking HPNA option, Toslink digital input, connections for CD, DVD,VCR, Outputs for Video, Audio, and more. Most of these jacks are susceptible to ESD threat. What Are Set Top Boxes? The continuing trend is to link broadband signal delivery to the home entertainment display, and other devices via set top boxes. Set top boxes used to be just an analog cable tuner/decoder but now it includes the likes of digital cable, satellite controller, internet service controllers, digital video recording systems and home networking. These devices allow the various cable and satellite signal operators to deliver a wide variety of services from television to internet and the hardware manufacturers can provide many features and benefits including home networking capabilities. There is digital video recording onto hard disk drives, replacing the cassette format, allowing pause and replay of and live television, or interactive TV. There are new standards being created to facilitate the design of the boxes such as a recent reference blueprint development by communications chipmaker Broadcom using the Microsoft interactive TV software system. The set top box is going to be a high volume commodity with many forms and functions. The PolySurg™ solution to the ESD protection problem Utilize the 0402ESDA-MLP, 0603ESDA-MLP, or 0603ESDATR1 PolySurg™ devices to protect the set top box electronics from catastrophic ESD damage at each potential outside metal contact or connector on each line. Audio, Video, RF, USB and RS-232 lines may be protected from ESD TVS occurrences on set top systems. Design Wins with Set Top boxes Cooper Bussmann has recorded some notable design wins already with it’s PolySurg™ ESD Suppressors in applications involving the protection of set top systems. Protection Against ESD Threat for Set Top System Input/Output Ports with PolySurg™ Audio Port AC Input Video Port RF Input Antenna Cable Satellite Front Panel I/O Port Smart Card RS-232 Keyboard Audio Port Video Port S-Video Port Set-Top Box Digital Satellite Receiver High Definition Digital Receiver Digital Cable TV Converter Interactive Internet TV Terminal Digital Video Recorder S-Video Port Digital Audio Port RJ - 45, Network Future Protection Requirements RF Out TV / VCR Other Device USB / USB 2.0 IEEE-1284, Parallel Digital Audio Port RJ - 11 A Typical Set Top Box Rear View Application Notes ESD Suppression Typical ESD Protection Applications with PolySurg™ 0402ESDA-MLP, 0603ESDA-MLP, or 0603ESDA-TR USB Controller V+ Data (+) Data (-) GND USB Port Amplifier Audio Output Video Processor Video Output RF Modulator RF Controller RF Input RF Output Visit us on the web at: www.cooperbussmann.com OV App Notes 3/07 © Cooper Electronic Technologies 2007 North America Cooper Electronic Technologies Cooper Bussmann 1225 Broken Sound Parkway NW P.O. Box 14460 Suite F St. Louis, MO 63178-4460 Boca Raton, FL 33487-3533 Tel: 1-636-394-2877 Tel: 1-561-998-4100 Fax: 1-800-544-2570 Fax: 1-561-241-6640 Toll Free: 1-888-414-2645 Europe Cooper Electronic Technologies Cooper Electronic Technologies Cooper (UK) Limited Avda. Santa Eulalia, 290 Burton-on-the-Wolds 08223 Leicestershire • LE12 5TH UK Terrassa, (Barcelona), Spain Tel: +44 (0) 1509 882 737 Tel: +34 937 362 812 Fax: +44 (0) 1509 882 786 +34 937 362 813 Fax: +34 937 362 719 Asia Pacific Cooper Electronic Technologies 1 Jalan Kilang Timor #06-01 Pacific Tech Centre Singapore 159303 Tel: +65 278 6151 Fax: +65 270 4160