Any-Rate Precision Clocks

Silicon Laboratories' any-rate precision clocks provide clock multiplication, jitter attenuation and clock distribution in high performance timing applications requiring sub 1 ps jitter performance. The devices accept multiple clock inputs ranging from 2 kHz to 710 MHz and generate multiple independent, synchronous clock outputs ranging from 2 kHz to 945 MHz and select frequencies to 1.4 GHz.

* REPLACE low jitter VCXO-based PLLs
* RECONFIGURE to support multi-rate applications
* REUSE simplified by any-rate frequency synthesis

Any-Rate Precision Clock Solutions
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PLL Clock Generator IC

The XC25BS8 series is a PLL clock generator IC which can generate a high frequency output from an input frequency as low as 8 kHz by multiplying the input up to 4095 times. The series features improved synchronous characteristics over the conventional XC25BS3 and XC25BS5 PLLs. Selectable options include an input divider ratio range (M) of 1 to 2047 and an output divider ratio range (N) of 1 to 4095. Using an input frequency of between 8 kHz to 36 MHz as a reference clock, an output frequency, within a range of 1 MHz to 100 MHz, can be set and as a result of internal tuning, it is possible to configure a fully operational circuit with fewer external components. The IC’s operation stops when a low level signal is applied to the CE pin which greatly reduces current consumption and produces a high-impedance output. The series is available in SOT-26W and USP-6C packages. The settings of the input divider ratio (M), output divider ratio (N) and charge pump current (Ip) are factory fixed prior to shipping, so the series is semi-custom.

Datasheet: XC25BS8

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