The W2637A is a BGA probe solution for direct signal access and characterization of LPDDR SDRAM, LPDDR NVM, and Mobile-DDR DRAM devices in x16 package configurations (60 balls). The probe enables state and timing measurements across all DRAM buses—DQ, DQS, and clock signals—via connection to Keysight logic analyzers or oscilloscopes. Its interposer design eliminates the need for custom BGA soldering, providing non-intrusive electrical and mechanical interface while tolerating lead-free soldering profiles.
Technical Specifications
• Product Type: LPDDR BGA Probe
• Supported DRAM Types: LPDDR SDRAM, LPDDR NVM, Mobile-DDR DRAM
• Package Configuration: x16 package (60 balls)—all signals
• Signal Access: Direct probing at BGA package; DQ, DQS, and clock signal measurement
• Probing Modes: Differential or single-ended for DQS and CLK signals
• Logic Analyzer Interface: Connects to Keysight E5384A via 90-pin logic analyzer pod cable; supports channel assignment of 8 or 16 bits per DRAM
• Oscilloscope Interface: Compatible with Keysight InfiniiMax oscilloscope probes (E2678A single-ended/differential socketed probe heads); requires W2639A Oscilloscope Adapter Board
• Interconnect Design: Rigid flex interposer with buried probe resistors at DRAM balls; ZIF probe mating with Agilent cable adapter
• Operating Characteristics: Full-speed measurement capability; operates at full speed for both logic analyzer and oscilloscope measurements
– Key Features
• Eliminates custom BGA soldering expertise requirement
• Minimizes mechanical torque applied to BGA balls
• Enables flexible probe cable routing around adjacent components
• Designed for lead-free soldering temperature profiles
• Reduces board space and trace routing demands versus connector-based methods
– Typical Applications
• Link-layer testing and protocol analysis of LPDDR memory devices
• Physical-layer debugging of mobile-DDR DRAM systems
• Signal integrity characterization during memory device development
– Compatibility & Integration
• Logic Analysis Systems: Keysight 16900 Series
• Oscilloscopes: Keysight Infiniium 9000 and 90000 Series
• Associated Adapters: W2639A Oscilloscope Adapter Board; Keysight E5384A logic analyzer pod
