ON Semiconductor Introduces Active Spread Spectrum Clock Generator IC
21ic News ON Semiconductor introduces a new family of active spread-spectrum clock generator integrated circuits (ICs) that manage the electromagnetic interference (EMI) and radio frequency interference (RFI) of clock sources for all clock-dependent signals. Reduce EMI within the system.
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The P3P8203A LVCMOS peak EMI reduction clock generator targets applications such as graphics cards, computing and consumer applications. The device supports a 3.3 volt (V) input voltage from 18 MHz to 36 MHz and controls the spread-spectrum bias through an external resistor simulation. The system designer selects the different values ​​of the external resistors to provide the desired spread spreadoff bias at the output, allowing for more flexible customization of the application, resulting in reduced EMI requirements in its application. The P3P8203A is available in an 8-lead, 2 mm x 2mm x 0.8 mm WDFN package and is ideal for use in printed circuit board (PCB) space-constrained applications. Operating temperature range is 0 ° C to +70 ° C.
The P3MS650100H and P3MS650103H LVCMOS peak EMI reduction clock generators are ideal for PCB space-constrained applications such as portable battery-powered devices such as cell phones and tablets; in these applications, EMI/RFI can be a major challenge, while complying with EMI/RFIF Specifications are a prerequisite. These GM's new spread-spectrum clock generators are only 1 mm x
The 1.2 mm x 0.8 mm miniature 4-pin WDFN package provides the industry's smallest stand-alone active solution for reducing the clock source and the EMI/RFI of the downstream clock and data signals from the clock source. The P3MS650100H and P3MS650103H support an input voltage range of 1.8 V to 3.3 V with a typical spread spectrum deviation of 0.45% to 1.4%, reducing the EMI/RFI of the clock source in the 15 MHz to 60 MHz frequency range. Operating temperature range is -20oC to +85oC.
Ryan Cameron, vice president of industrial and timing products at ON Semiconductor, said: "Compliance with EMI specifications while controlling costs and minimizing PCB footprint is a major challenge for portable and computing applications. Our new EMI reduction IC addresses these challenges and provides a cost-effective solution. The solution reduces the clock source and the EMI/RFI of the downstream clock and data signals from the clock source. Design engineers can apply these devices early in the design cycle without the need for additional solutions or additional costly additional PCB layers or shields. Handling EMI/RFI issues."
Packaging and price
The P3P8203A is available in an 8-pin WDFN package and is priced at $0.44 each in 10,000-unit quantities. The P3MS650100H and P3MS650103H are available in a 4-pin WDFN package and are priced at $0.24 each in 10,000-piece quantities.
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