AR# 35675
|ML605 - Decoupling for jitter attenuator on PCIe clock
描述
The ML605 Evaluation Kit uses the ICS874001I-05 PCIe Jitter Attenuator from IDT onboard, however, the decoupling used does not match the IDT datasheet.解决方案
The ML605 Evaluation Kit uses the ICS874001I-05PCIe JitterAttenuator (U9 in the schematic) datasheet which can be found at:
http://www.idt.com/products/getDoc.cfm?docID=18690140
The power supply filtering recommendation given in the IDT datasheet is as follows:
Article 35675
However, in the ML605 schematics, while VDDA (pin 8) of U9 is connected through a 10 ohm resistor to 3.3V, it is not decoupled at the pin with a 0.01 uF capacitor as the IDT datasheet recommends.
Customers intending to use the ICS874001I-05 in a similar application in their own system should follow the recommendation given in the IDT datasheet above, and not follow the ML605 schematics.
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| AR# 35675 | |
|---|---|
| 日期 | 12/15/2012 |
| 状态 | Active |
| Type | 综合文章 |
| Boards & Kits | |
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