Overview
The LP5-A-CDA-441 Direct Attach BGA interposer enables probing of LPDDR5 and LPDDR5X 4×32 components with an oscilloscope.
- All major oscilloscope vendors supported
- 441-ball 4×32
- LPDDR5X and LPDDR5
- JEDEC Standard JESD209-5
- Easily access signals
- Embedded tap resistors
- Small keep-out volume (KOV)
- Risers available
- S-Parameters for System Simulation
- Oscilloscope de-embedding S-Parameters
- Installs with standard BGA Rework
- Attachment and Analysis Services Available
XH Series
The LP5-A-CDA-441 is an XH Series interposer, designed to interpose and capture memory signals exceeding 8.5GT/s.
BGA Interposer Advantages
The LP5-A-CDA-441 interposer enable probing at the highest speeds of LPDDR5X and LPDDR5 with either an oscilloscope or an MA51x0 series analyzer. This enables complete signal access to the DDR5 bus for visibility and compliance analysis. The interposers and risers are easy to install using standard BGA rework practices. Or take advantage of Nexus’ attachment and testing services.
Direct Attach – Convenient and Accurate
Optimal LPDDR5(X) validation requires analysis of the LPDDR5 signals as seen by the memory components. This allows for the highest confidence that the signals captured are representative, contain little interference, and present the maximum possible data eye size. This LPDDR5 Direct Attach interposer enables MA51x0 analyzer and oscilloscope probing of the LPDDR5 signals.
Simulation and De-Embedding
S-Parameters are included for target simulation and the creation of oscilloscope de-embedding filters.
Riser
A riser can be used to elevate the interposer over 0.050” (height without including BGA balls). Risers are used to clear components adjacent to the memory BGA. Risers are installed along with the interposer using standard BGA rework practices.
Attachment and Testing Services
The following services are available for this interposer.
Attachment Service
For each interposer, the Attachment Service will install a component to the interposer and the interposer to the target. Other accessories may also be attached (risers, sockets, etc.).
Target Boot & Basic Functionality
For each target, this service will power on and ensure functionality of the target with the interposer(s) installed.
Add Digital Analysis
Add logic and real-time compliance analysis using a PRB-FL probe and a MA51x0 series logic analyzer.
MA51x0 Series Analyzer & PRB-FL
A MA51x0 series analyzer and a PRB-FL probe enable protocol debug, compliance analysis and oscilloscope cross-triggering. With a turn-key setup, the MA5150 can analyze thousands of real-time memory parameters across clock stops and frequency changes. Also includes 11ps x 10mV x 20-channel analog characterization (iCiS™) and dynamic probe termination.
Digital Testing Services
MA5150: Signal Analysis & Basic Command Acquisition
This service will power on the target and place the target in a predefined state. A MA5150 analyzer will then be connected to the target and the following tests will be performed and the following reports will be provided.
- iCiS eye analysis report of all command, address and control signals, including recommended sampling positions and a MAx100 System Setup file.
- A real-time JEDEC protocol report, including pass/fail for all basic protocol/sequence checks. Any failures will be noted in the report and an Max100 Saved Session file will be provided so that the customer may review the results.
MA5150: Additional / Custom Services
Additional and custom services may also be requested.
Dimension Drawings
Product Configuration Table
| Product Name | Description | Nexus Order Number |
|---|---|---|
| LP5-A-CDA-441 | LPDDR5 441-ball component interposer for use with oscilloscopes. | NEX-LP5-A-CDA-441 |
| LP5-RSR-441 | LPDDR5 441-riser. | NEX-RSRLPDDR5441 |