Keysight W5643A DDR5 and W4640 / 30 Series DDR4 BGA Interposers Installation Guide
■The W5643A DDR5 DRAM BGA Interposer enables probing of 78-ball DDR5 x4/x8 DRAM directly at the ball grid array using the Keysight U4164A logic analyzer.
■Using this interposer, you can capture DDR5 CA, CMD, and DQ signals for data rates above 3800 MT/s. It provides access to DDR5 DQ signals without double probe load by utilizing the Quad Sampling features of a U4164A logic analyzer. Refer to page 13 to know more about DDR5 signals probing and analysis using the W5643A and U4164A setup.
■This interposer is designed to be soldered to the PCB footprint for the DRAM either directly (if there is sufficient KOV) or using either the riser included with the interposer or an optional Grypper socket (not included with the interposer). The DDR5 DRAM being probed is soldered to the top side of the interposer.
■Each DRAM signal in the common footprint passes directly from the bottom side of the interposer to the top side of the interposer.
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W5643A 、 W4640 、 W4640 Series 、 W4630 Series 、 W4630 |
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DDR4 BGA Interposers 、 DDR5 Interposers 、 DDR5 x4 BGA 2-Wings Interposer 、 DDR5 x8 BGA 2-Wings Interposer 、 78-ball Interposer 、 DDR5 78- ball BGA 2-Wings Interposer |
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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March 2020 |
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Edition 7 |
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W4631-97000 |
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11.9 MB |
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