News
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3 Nov 17
True Circuits Attends the TSMC 2017 China OIP Ecosystem Forum
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7 Sep 17
True Circuits Attends the TSMC 2017 NA OIP Ecosystem Forum
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7 Nov 17
True Circuits Signs Five Year PLL License with Tsinghua University in China
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14 Jun 17
True Circuits Attends Design Automation Conference
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14 Mar 17
True Circuits Showcases State-of-the-art Ultra PLL, Low Power IoT PLL and 16nm IP Portfolio at TSMC NA Technology Symposiums
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30 May 16
True Circuits Attends Design Automation Conference
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14 Mar 16
True Circuits Announces New Line of IoT PLLs
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5 Jun 15
True Circuits Attends Design Automation Conference
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Spread Spectrum PLL
The Spread Spectrum PLL is designed to multiply an input clock by a fixed-point number between 92 and 184 with frequency spreading capability suitable for PC and consumer electronics applications that require low EMI. It does not provide any deskew functionality. It contains a 1-64 divider at the reference clock input, a 1-256 or larger integer divider and a 1-256 or larger fractional divider in the internal feedback path, with as many as 4 bits of precise fractional-N control, and a 1-8 divider at the output. It can generate precise and adjustable frequency spreading depths (1.5% typical and up to around 10%) and rates (30KHz typical). The outputs are 50% duty cycle for all output divider values.