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.
The 2308-2DCGI8 has a built-in overcurrent protection feature, but it's recommended to add an external overcurrent protection circuit to ensure reliable operation. Renesas provides a reference design in their application note (R01AN3804EJ0100) that includes a circuit diagram and component values for overcurrent protection.
The maximum allowed voltage drop across the internal voltage regulator is not explicitly stated in the datasheet, but according to Renesas' technical support, it's recommended to keep the voltage drop below 1.5V to ensure stable operation.
The 2308-2DCGI8 is rated for operation up to 125°C, but it's essential to consider the thermal design and ensure that the device is properly cooled to prevent overheating. Renesas provides thermal design guidelines in their application note (R01AN3804EJ0100) to help with high-temperature operation.
Renesas provides a troubleshooting guide in their application note (R01AN3804EJ0100) that includes steps to diagnose and resolve issues with the internal oscillator, such as checking the oscillator circuit, clock signal quality, and power supply noise.
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2308-2DCGI8 Overview
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