Electronic Design UPDATE: May 11, 2005

May 11, 2005
News Focus: Li-Ion Battery Chargers Select Between USB Or AC Adapter
Two standalone dual-input linear battery chargers, the LTC4075 and LTC4075X, efficiently manage the charging of single-cell lithium-ion (Li-ion) batteries from either wall-adapter o

Electronic Design UPDATE e-Newsletter Electronic Design Magazine PlanetEE ==> www.planetee.com May 11, 2005


*************************ADVERTISEMENT************************** InCyte Chip Estimation Tool Available as FREE Download! FREE at ChipEstimate.com from Giga Scale IC(R), download the new chip estimation tool accurate to within 5-10% of silicon. InCyte(TM) estimates die size, power, leakage, yield, and cost. Start chip implementation with a VISION instead of a spreadsheet. Register at http://nls.planetee.com/t?ctl=98B5:1001CD today! **************************************************************** Today's Table Of Contents: 1. News Focus *Li-Ion Battery Chargers Select Between USB And AC Adapter 2. News From The Editors *White LED Driver Adds Shift Register *I/O Module Combines PCI, Ethernet Advantages *Inductor Delivers Low DCR In A Small Package 3. TechView Scope *Networking Technology Transmits Data Over Body Surface 4. Upcoming Industry Events *Spring Processor Forum *SID International Symposium 2005 *Sensors Expo and Conference Electronic Design UPDATE edited by Lisa Maliniak, eMedia Editor **************************************************************** A Closer Look At Video Signals Nowadays there are numerous standards for the digital video signals widely used in such products as game players and cell phones. Tough design questions arise, however, because those digital signals must be dealt with in an analog domain. Get the answers in a new eBook, "Analog/Mixed-Signal Components For 21st Century Video," by Analog/Power Editor Don Tuite. http://nls.planetee.com/t?ctl=98B0:1001CD **************************************************************** ********************** 1. News Focus ********************** Li-Ion Battery Chargers Select Between USB And AC Adapter Two standalone dual-input linear battery chargers, the LTC4075 and LTC4075X, efficiently manage the charging of single-cell lithium-ion (Li-ion) batteries from either wall-adapter or USB power sources. Using a constant-current/constant-voltage algorithm, the chargers can deliver up to 950 mA of charge current from a wall-adapter supply or up to 500 mA of charge current from a USB supply while automatically sensing the presence of voltage at each input. The final float voltage accuracy is +/-0.6% in either case. The LTC4075X disables the trickle charge function, which benefits systems that require more charge current during low-battery conditions. Applications include PDAs, MP3 players, lightweight portable medical and test equipment, and cell phones with large color screens. The LTC4075/X is equipped with a patented thermal regulation scheme that maximizes the charging rate without the risk of overheating. Wall-adapter supply charge current, USB supply charge current, and charge termination current are all programmable via a single resistor. As a standalone charger, it also features trickle charge for battery pre-conditioning, undervoltage lockout, automatic recharge, a charge status indicator, and "power present" status outputs to indicate the presence of wall-adapter or USB power. The LTC4075/X is offered in a low-profile (0.75 mm), 10-lead, 3- by 3-mm DFN package. External MOSFETs, sense resistors, and blocking diodes aren't required, so the total solution footprint is less than 25 square mm. To preserve battery energy, the LTC4075 draws less than 6 microamps from the battery terminal in standby and less than 2 microamps in shutdown mode. The LTC4075/X is rated for operation from -40 deg. C to 85 deg. C. Pricing starts at $1.88 each in 1000-unit quantities. Linear Tehnology Corp. ==> http://nls.planetee.com/t?ctl=98B9:1001CD **************************************************************** *************************ADVERTISEMENT************************** Red Hot Deals-Full Design Kits for under $10! 'Spring into action' with ZiLOG and take advantage of special red hot deals focused around our critically-acclaimed development kits for the 8-Pin Z8 Encore! XP(r) Flash MCU. Through June 30, 2004, our development kits have been discounted to an ultra cool price of just $9.95; that's 80% off the retail price of $49.95. No strings - just amazing value. Catch 'spring fever' and get yours today! http://nls.planetee.com/t?ctl=98AD:1001CD **************************************************************** ********************** 2. News -- From The Editors ********************** ***White LED Driver Adds Shift Register A white LED driver with an onboard 10-bit serial-to-parallel shift register takes aim at LED indicator and interior lighting applications. The CAT310 drives up to 10 color or white LEDs. It safely handles "load dump" transients to 40 V, suiting it for use in automotive systems. The internal shift register accepts up to a 10-bit data stream, stores the state condition of each output channel, and upon command, latches the input data to enable or disable the outputs. This provides LED blanking and pattern control for signal indication in applications such as diagnostic tools or control panels. A serial output lets users cascade multiple CAT310 drivers. Each channel can sink up to 50 mA, with the current through each LED set by a series resistor. Housed in a 20-lead SOIC package, the driver chip sells for $0.95 apiece in lots of 1000. Catalyst Semiconductor Inc. ==> http://nls.planetee.com/t?ctl=98B1:1001CD ***I/O Module Combines PCI, Ethernet Advantages The E-PDISO16 digital I/O module combines the advantages of both Ethernet- and PCI-based solutions in one product. The high-voltage, high-current Ethernet module offers functionality and performance usually found in PCI devices: 16 isolated digital inputs, 500-V dc isolation, and 16 Form C relays with 6-A at 240 VAC/28 VDC contact ratings. Unlike a PCI-based system, however, the E-PDISO16 Ethernet-based device can be distributed anywhere there's a network connection and power. Users can connect the device to the network at the point of measurement and then configure, monitor, and control the device from anywhere else on the network. A compact form (17.2 by 5.1 by 1.75 in.) makes the module ideal for laboratory, test, and industrial monitoring and control application. The E-PDISO16 digital I/O module will be priced at $499 each. Shipments begin in late May. Measurement Computing Corp. ==> http://nls.planetee.com/t?ctl=98B8:1001CD ***Inductor Delivers Low DCR In A Small Package Vishay Intertechnology has extended its IHLP family of low-profile, high-current inductors with a new device that offers very low DCR/microH in a compact 0.402- by 0.452- by 0.157-in. package. The IHLP-4040DZ-05 has DCR values down to 0.65 milliohm at 0.19 microH. It is a space- and power-saving solution for dc-to-dc converters, notebooks, and many other applications. This new power inductor handles high transient current spikes without saturation. And, it operates over a frequency range up to 5 MHz. Saturation current and typical DCR values for the inductor range from 40 to 60 A and from 1.55 milliohms to 0.65 milliohm, respectively, over an inductance range of 0.56 to 0.19 microH. Inductance tolerance for the new device is +/-20%. The IHLP-4040DZ-05 has a lead time of eight weeks for larger orders. Pricing for 500-piece reels starts at $0.65 per piece for quantities of 10,000 pieces or more. Vishay Intertechnology Inc. ==> http://nls.planetee.com/t?ctl=98B7:1001CD **************************************************************** ********************** 3. TechView Scope ********************** Networking Technology Transmits Data Over Body Surface Nippon Telegraph and Telephone (NTT) Corp. is developing an innovative human area networking technology called RedTacton that safely turns the surface of the human body into a data transmission path at speeds of up to 10 Mbits/s between any two points on the body. Using an electro-optic sensor, NTT has already built a small RedTacton transceiver prototype the size of a PCMCIA card. The RedTacton technology enables the first practical human area network between electronic devices located on the body and PCs or other network devices embedded in the environment. Communication is achieved via a new generation of user interface based on totally natural human actions such as touching, holding, sitting, walking, or stepping on a particular spot. RedTacton can be used for intuitive operation of computer-based systems in daily life, temporary one-on-one private networks based on personal handshaking, device personalization, security, and a host of other applications. NTT's human area network uses weak electric fields on the surface of the body as a transmission medium. Basically, a RedTacton transmitter couples with extremely weak electric fields on the surface of the body. The weak electric fields pass through the body to a receiver, where the fields affect the optical properties of an electro-optic crystal. A laser light detects the extent to which the optical properties are changed, and the change is subsequently converted to an electrical signal by a detector circuit. A communications path can be created with a simple touch, automatically initiating the flow of data between a body-centric electronic device and a computer that is embedded in the environment. Using a RedTacton electro-optic sensor, two-way communication is supported between any two points on the body. In addition, communication is not just confined to the surface of the body, it also can travel through the user's clothing to a RedTacton device in a pocket or through shoes to communicate with a RedTacton device embedded in the floor. NTT is committed to moving RedTacton out of the laboratory and into commercial production as quickly as possible by organizing joint field trials with partners outside the company under NTT's comprehensive producer program. NTT Corp. ==> http://nls.planetee.com/t?ctl=98AE:1001CD **************************************************************** Take the Infineon Memory Challenge We have an all-new pop quiz to test your memory skills! Take a bash at the five memory-related questions and you'll be in with a chance of winning a super-duper Sony Playstation Portable device. We'll also be throwing a few Electronic Design t-shirts into this month's quiz, so put your knowledge to the test and hit that submit button! http://nls.planetee.com/t?ctl=98AF:1001CD **************************************************************** ********************** 4. Upcoming Industry Events ********************** May 16-19, Spring Processor Forum San Jose, Calif. http://nls.planetee.com/t?ctl=98B4:1001CD May 22-27, Society for Information Display (SID) International Symposium 2005 Boston, Mass. http://nls.planetee.com/t?ctl=98BA:1001CD June 6-9, Sensors Expo and Conference Chicago, Ill. http://nls.planetee.com/t?ctl=98B6:1001CD **************************************************************** Embedded in Electronic Design (EiED) Online is your source for technical insight and hands-on reviews. Read Bill Wong's latest EiED Online column: "Something Red, Something Blue." http://nls.planetee.com/t?ctl=98AC:1001CD ********************** TAKE A POLL! Do you listen to podcasts on your iPod or other MP3 player? -- Often -- Sometimes -- Never -- I don't own an iPod or MP3 player Vote at Electronic Design ==> http://www.elecdesign.com **************************************************************** Get The Lead Out! The European Union, as well as Japan and China, are about to restrict the use of environmentally hazardous materials in electronic components and systems through the Restrictions on Hazardous Substances (RoHS) directive. Check out Electronic Design's new RoHS Reference Center with links, articles, and more. Take our RoHS quiz to see how much you really know about this new EU directive. Then download the first chapter of our eBook, "Electronic Design's Guide To New International Environmental Laws." And stay tuned for more chapters to learn everything you need to know about this important emerging topic. http://nls.planetee.com/t?ctl=98B3:1001CD **************************************************************** SUBSCRIBE ONLINE TO ELECTRONIC DESIGN If you're reading this e-newsletter, then you are either a current Electronic Design subscriber, or should be (145,000 of your peers are). To apply for or renew a subscription to Electronic Design absolutely FREE and without paperwork or hassle, click on the link below. http://nls.planetee.com/t?ctl=98B2:1001CD ****************************************************************




Editorial: Mark David, Editor-in-Chief mailto:[email protected] Advertising/Sponsorship Opportunities: Bill Baumann, Publisher: mailto:[email protected]

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