LPDDR5(X) | 315-Ball | Direct Attach | XH Series
The LP5-A-CDA-315 interposer enables probing of the memory at the ball grid array (BGA) with an oscilloscope or an MA51x0 series analyzer.
- 315-ball LPDDR5 / LPDDR5X 2×16 BGA Component
- Supports LPDDR5 and LPDDR5X
- 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
BGA Interposer Advantages
The LP5-A-CDA-315 interposer enable probing of LPDDR5 and LPDDR5X with either an oscilloscope or an MA51x0 series analyzer. This enables complete signal access to the LPDDR5 bus for visibility and compliance analysis. The interposers and risers are easy to install using lead-free or leaded standard BGA rework practices. Or take advantage of Nexus’ attachment and testing services.
Analyzers, Oscilloscopes, and Probes
The oscilloscope requirements will differ based on the frequency content of the LPDDR5(X) bus signals (JEDEC does not define measurement bandwidths). Bandwidths around 12-16GHz may be a sufficient, general-purpose solution. However, for the highest speeds of LPDDR5X, 16-30GHz bandwidths are required. The optimal oscilloscope and oscilloscope vendor for a given application may vary.
A MA51x0 series logic analyzer / real-time compliance 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.
Attachment & Testing Services
The following services are available for this interposer family.
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.
Target Boot & Basic Functionality
For each target, this service will power on and ensure functionality of the target after the attachment service is completed.
MA5150: Signal Access & Basic Command Acquisition
For every channel on each interposer, this service will power on the target and place the target in a predefined state. A MAx150 series 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: Margin Testing – One Frequency
For a single channel each interposer, this service will power on the target and place the target in a predefined state. A MAx150 will be used to perform the following tests and the following reports will be provided.
- Real-time MRS/MRW to capture configuration information. On boot for targets running at one frequency. On boot and before a frequency change for targets that change frequencies.
- A real-time JEDEC margin test of one frequency. 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, including real-time frequency switching analysis over 2 to 16 independent frequencies, each with their own set of compliance limits.
Dimension Drawings
Product Configuration Table
| Product Name | Description | Solder Balls Pre-Installed | Alt. Order Number |
|---|---|---|---|
| LP5-A-CDA-315 | LPDDR5 315-ball Direct Attach Interposer | Yes | NEX-LP5MCI315XHSCDS |
| LP5-RSR-315 | LPDDR5 315-ball Riser | Yes | NEX-RSRLPDDR5315 |