Design Center
In-Depth
The Hot 100 Electronic Products of 2008 12/15/2008
EDN's editors offer up their annual list of the year's 100 most significant ICs, components, buses, boards, EDA tools, power devices, test instruments, and more.Designing protective circuitry for DSL loops: Beware of pitfalls 12/5/2008
DSL equipment requires protection from a variety of overvoltage conditions, but the need to avoid unduly degrading circuit operation complicates circuit design.3G wireless data: about to break? 11/13/2008
Although the definitions of 3 and 4G wireless data networks, services, and terminals have been moving targets, some long-promised 3G capabilities are starting to appear. Meanwhile, 4G deployments have been delayed even further.Power-over-Ethernet chips: to the spec and beyond 10/16/2008
Power over Ethernet allows a basic Category 5 or 6 cable to carry both data and power, enabling simple and inexpensive installations of equipment such as VOIP phones, cameras, and wireless-access points.DisplayPort versus HDMI: Do we really need two digital-display-interface standards? 9/18/2008
DisplayPort silicon is beginning to appear in PCs, LCD monitors, and graphics cards. But it will probably be at least five years before prices fall and volumes ramp enough to challenge HDMI in consumer electronics.Bluetooth: Sufficient fidelity even for average listeners? 6/26/2008
Applications require video support and additional audio channels to cope with stereo, driving the need for low-latency codecs. Using a Bluetooth chip set simplifies development and enables the manufacturer to leverage the brand recognition that Bluetooth now enjoys among consumers.Protocol-stack testing for LTE technology 5/29/2008
Effective test strategies can help transform UMTS into a cellular-wideband system.Unraveling the dynamic-range specification in modern spectrum analyzers 5/29/2008
Using a relatively simple chart to calculate dynamic range, along with speed and accuracy specifications, ensures that you choose the right spectrum analyzer and make appropriate price/performance trade-offs.Laser goes to (trim) pot 5/14/2008
Tales From The Cube: The laser in a SONET transponder begins to behave erratically with varying temperature. Should the engineers blame the climate, or the human element?10-GbE in the mainstream 5/1/2008
10-GbE edges closer to major product rollouts as silicon prices and power consumption fall. But it may be two years or more before widespread deployments start meeting demand.ADVERTISEMENT
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