Description:The 2308 is a high-speed phase-lock loop (PLL) clock multiplier. It is designed to address high-speed clock distribution and multiplication applications. The zero delay is achieved by aligning the phase between the incoming clock and the output clock, operable within the range of 10 to 133MHz. The 2308 has two banks of four outputs each that are controlled via two select addresses. By proper selection of input addresses, both banks can be put in tri-state mode. In test mode, the PLL is turned off, and the i
Renesas provides a recommended PCB layout guide in their application note (R01AN3804EJ0100) which includes thermal design considerations, such as thermal vias, copper pours, and component placement, to ensure optimal thermal performance.
Renesas recommends using an external overcurrent protection circuit, such as a current sense resistor and a comparator, to detect overcurrent conditions. The 2308-1DCGI also has a built-in overcurrent detection feature, which can be enabled by setting the OCP pin high.
Although the datasheet specifies a maximum operating voltage of 18V, Renesas recommends limiting the voltage on the VIN pin to 15V during startup to ensure reliable operation and prevent damage to the device.
Renesas provides EMC design guidelines in their application note (R01AN3804EJ0100), which include recommendations for PCB layout, component selection, and shielding to ensure EMC compliance.
Renesas recommends using a low-ESR ceramic capacitor (X5R or X7R type) with a value of 10uF to 22uF for the input capacitor, depending on the specific application requirements and operating conditions.
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