Description:The 844004I-104 is a 4 output LVDS Synthesizer optimized to generate Fibre Channel reference clock frequencies. Using a 26.5625MHz 18pF parallel resonant crystal, the following frequencies can be generated based on the two frequency select pins (F_SEL[1:0]): 212.5MHz, 187.5MHz, 159.375MHz, 106.25MHz and 53.125MHz. The 844004I-104 uses IDT's 3RD generation low phase noise VCO technology and can achieve <1ps typical rms phase jitter, easily meeting Fibre Channel jitter requirements. The 844004I-104 is package
Renesas provides a recommended PCB layout guide in their application note (APN) documents, which can be found on their website. The guide includes thermal vias, copper pours, and other layout considerations to ensure optimal thermal performance.
Renesas recommends using an external power sequencer or a dedicated power management IC to ensure proper power sequencing. The datasheet provides guidelines for power-up and power-down sequences, but a detailed implementation example can be found in the application notes or through direct support from Renesas.
Renesas recommends using high-quality, low-ESR decoupling capacitors with a value of 0.1uF to 1uF, placed as close as possible to the device's power pins. The datasheet provides a recommended decoupling capacitor layout, but the specific capacitor values and types may vary depending on the application.
Renesas provides a troubleshooting guide in their application notes, which covers common issues and their solutions. Additionally, Renesas offers direct support through their website, where engineers can submit questions and receive assistance from their technical support team.
The 844004AKI-104LF is rated for operation in the industrial temperature range (-40°C to 85°C) and is RoHS compliant. However, the specific operating conditions, such as humidity and vibration, may vary depending on the application. Engineers should consult the datasheet and application notes for more information.
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844004AKI-104LF Overview
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