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posted in March 2006
How to improve linear regulator power supply ripple rejection and output noise
Design How-To  
3/29/2006   Post a comment
Many applications need to control power supply ripple rejection and output noise but to best accomplish this you need to understand the five main regulator types. Here's a practical tutorial that's useful for all levels of design engineers to find out what the tradeoffs are in your design yet help improve ripple rejection and output noise.
IP key in CMOS image sensors
Teardown  
3/27/2006   Post a comment
One of the largest growth markets in the semiconductor industry continues to be CMOS image sensors. The inclusion of the "unblinking eye" in mobile handsets, optical mice and the like has driven this growth over the last few years and is projected to continue to fuel growth in the foreseeable future. The revenue for CMOS image sensors grew 65.9 percent in 2004 from the year before and is expected to reach $4.64 billion by 2007.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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