Description:The 874003 is a high performance Differential-to-LVDS Jitter Attenuator designed for use in PCI Express® systems. In some PCI Express® systems, such as those found in desktop PCs, the PCI Express® clocks are generated from a low bandwidth, high phase noise PLL frequency synthesizer. In these systems, a jitter attenuator may be required to attenuate high frequency random and deterministic jitter components from the PLL synthesizer and from the system board. The 874003 has 3 PLL bandwidth modes: 200kHz, 400kH
Renesas provides a recommended PCB layout guide in their application note (R01AN2732EU0100) which includes thermal design considerations, such as thermal vias, copper pours, and component placement.
Renesas recommends a specific power sequencing scheme in their application note (R01AN2732EU0100) to ensure proper device operation. The sequence involves powering up the VCC, then the VDD, and finally the AVCC.
Renesas provides guidelines for EMI and noise reduction in their application note (R01AN2732EU0100), including the use of decoupling capacitors, ferrite beads, and shielding to minimize electromagnetic interference.
Renesas recommends using a crystal oscillator with a frequency of 12 MHz to 24 MHz, and a load capacitance of 10 pF to 20 pF. The crystal oscillator should also meet the specified frequency tolerance and stability requirements.
Renesas provides thermal design guidelines in their application note (R01AN2732EU0100), including the use of thermal interfaces, heat sinks, and thermal vias to dissipate heat. The device can operate up to 125°C, but thermal design considerations are crucial to ensure reliable operation.
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874003AGLF Overview
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