Keysight W2637A User Manual
Keysight W2637A User Manual

Keysight W2637A User Manual

Lpddr bga probes and oscilloscope adapter board

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Summary of Contents for Keysight W2637A

  • Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
  • Page 2 User’s Guide Keysight W2637A, W2638A, and W2639A LPDDR BGA Probes and Oscilloscope Adapter Board...
  • Page 3 Should Keysight and the user have a FAR and the DFARS and are set forth specifically separate written agreement with warranty in writing elsewhere in the EULA.
  • Page 4: Table Of Contents

    Logic Analyzer Connection to the LPDDR Probes 15 Probing the W2639A Oscilloscope Adapter Board with an InfiniiMax Probe 23 Oscilloscope Connection to the W2637A/38A Series Probes 23 3. Setting Up the Logic Analysis System 31 4. Characteristics, Regulatory, and Safety Information 32...
  • Page 5: Introduction

    DRAMs) passes directly from the bottom side of the probe to the top side of the probe. Buried probe resistors placed at the DRAM balls connect the probed signals to the rigid flex to mate with a Keysight cable adapter (ZIF probe). The W2637A/38A probes are also compatible with the Keysight InfiniiMax oscilloscope probes (E2678A single- ended/differential socketed probe heads).
  • Page 6: Technical Feature Summary

    Technical Feature Summary Probing of LPDDR x16 and x32 DRAMs in BGA package using  JEDEC standard common BGA footprint. Logic analyzer (using E5384A/E5826 single-ended ZIF probe) and  oscilloscope (using E2678A InfiniiMax socketed probe head) connection to RAS#, CAS#, WE#, DQ, DQS/DQS#, and CK/CK# signals.
  • Page 7: W2637A Top View

    1. Introduction The following pictures show the W2637A and W2638A BGA probes, and the W2639A Oscilloscope Adapter Board. W2637A Top View Top view (DRAM attach side) W2638A Top View Top view (DRAM attach side) LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 8: W2639A Top View

    Equipment Supplied W2637A and W2638A LPDDR BGA Probes The following components have been shipped with your W2637A or W2638A LPDDR BGA probe (the first bullet shows the various ordering options and the number / type of probe(s) included with each): W2637A-101: kit of one W2637A LPDDR probe ...
  • Page 9: Equipment Required (When Using Probes With Logic Analyzer)

    This section provides the configuration guide for probing x16 and x32 DRAM type with various data width. You will need: Keysight 16900-series logic analyzer system  An appropriate number of Keysight logic analyzer cards connected  together as a module. Logic Analyzer Configuration Guide...
  • Page 10: Mechanical Considerations

    Mechanical Considerations The following figures show the Keep Out Volume for various logic analyzer cables / adapters / probes when connected to the LPDDR Probes or the Oscilloscope Adapter Board. LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 11 1. Introduction LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 12 LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 13 1. Introduction W2637A W2639A LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 14 W2638A LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 15: Installing The Lpddr Bga Probes

    2. Installing the LPDDR BGA Probes Soldering the probe The W2637A/38A BGA probes need to be attached to the DRAM PCB footprint on the design to be probed, and the desired DRAM is soldered to the top side of the probe. This attachment may occur in any order (i.e.
  • Page 16: Logic Analyzer Connection To The Lpddr Probes

    Logic Analyzer Connection to the LPDDR Probes The W2637A LPDDR BGA probe connects to E5384A to provide connection to the logic analyzer for the x16 LPDDR package. The W2638A LPDDR BGA probe connects to E5384A and E5826A to provide connection to the logic analyzer for the x32 LPDDR package. The E5384A and/or E5826 plug into the 90-pin logic analyzer pod cable.
  • Page 17 2. Installing the LPDDR BGA Probes LPDDR x32 E5384A and E5826A Probe Cable Pin Assignment Logic Analyzer Cable #1 (E5384A) Data Pod Control Pod Address Pod Signal BGA Ref Signal BGA Ref Signal BGA Ref Channel Name Channel Name Channel Name DQS0 DQ11...
  • Page 18 Logic Analyzer Cable #2 (E5826A) Data Pod Signal Channel Name DQ19 DQ21 DQ23 DQ17 DQ26 DQ10 DQ28 DQ12 DQ14 DQ30 DQ24 Clock_P Clock_N LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 19 2. Installing the LPDDR BGA Probes W2637A x16 LPDDR BGA Probe Pin-Out Left Flex Wing (E5384A) Right Flew Wing (E5384A) Signal Name Group Signal Name Group All odd pins All odd pins DQ14 Data Data DQ15 Data Data DQ13 Data...
  • Page 20 W2638A x32 LPDDR BGA Probe Pin-Out Left Flex Wing (E5384A) Right Flew Wing (E5384A) Signal Name Group Signal Name Group All odd pins All odd pins Data DQ31 Data DQ16 Data DQ29 Data DQ18 Data DQ27 Data DQ20 Data DQ25 Data DQ22 Data...
  • Page 21 2. Installing the LPDDR BGA Probes W2638A x32 LPDDR BGA Probe Pin-Out (continued) Bottom Flex Wing (E5826A) Top Flew Wing (E5826A) Signal Name Group Signal Name Group All odd pins All odd pins Data DQ24 Data DQ10 Data DQ26 Data DQ12 Data DQ28...
  • Page 22 W2637A LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 23 2. Installing the LPDDR BGA Probes W2638A LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 24: Probing The W2639A Oscilloscope Adapter Board With An Infiniimax Probe

    To connect to an oscilloscope, first solder the LPDDR BGA probe to the circuit board. Then attach the W2639A oscilloscope adapter boards to the “wings” of the LPDDR probes (two adapter boards for the W2637A (x16) probe and four for the W2638A (x32) probe). To attach these...
  • Page 25 2. Installing the LPDDR BGA Probes Please note that the side labeled “TOP” on the LPDDR probes should be pointing upwards. Also, there is a small triangle in one of the corners (see picture below). This edge should be the top left corner. LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 26 Factor = 60.4 / (x + y + 37.4 + 60.4) Gain where: x = [(1/Tx) + (1/Rx)] y = 100 Ω for W2637A/W2638A y = 150 Ω for W2631/32/33/34A and W3631/33A Make sure the DF Sckt probe head is selected in the Head Label ...
  • Page 27 2. Installing the LPDDR BGA Probes W2639A LPDDR BGA Probe Adapter Board Pin-Out for W2637A x16 LPDDR BGA Probe Left Flex Wing Right Flex Wing Signal Signal Test Signal Signal Test Test Signal Signal Test Signal Signal Name Name Point...
  • Page 28 W2639A LPDDR BGA Probe Adapter Board Pin-Out for W2638A x32 LPDDR BGA Probe Left Flex Wing Right Flex Wing Signal Signal Test Signal Signal Test Test Signal Signal Test Signal Signal Name Name Point Name Name Point Point Name Name Point Name Name...
  • Page 29 2. Installing the LPDDR BGA Probes W2639A LPDDR BGA Probe Adapter Board Pin-Out for DDR2 Interposer Configuration (W2633A) – see Appendix Left Flex Wing Right Flex Wing Signal Signal Test Signal Signal Test Test Signal Signal Test Signal Signal Name Name Point Name...
  • Page 30 W2639A LPDDR BGA Probe Adapter Board Pin-Out for DDR2 Interposer Configuration (W2631A)- see Appendix Left Flex Wing Right Flex Wing Signal Signal Test Signal Signal Test Test Signal Signal Test Signal Signal Name Name Point Name Name Point Point Name Name Point Name...
  • Page 31 2. Installing the LPDDR BGA Probes W2639A LPDDR BGA Probe Adapter Board Pin-Out for DDR3 Interposer Configuration (W3631A) Left Flex Wing Right Flex Wing Signal Signal Test Signal Signal Test Test Signal Signal Test Signal Signal Name Name Point Name Name Point Point...
  • Page 32: Setting Up The Logic Analysis System

    3. Setting Up the Logic Analysis System The mapping of specific signals to logic analyzer channels depends on: Which DRAMs on a DIMM are probed  Which probe you are using  How the single ended logic analyzer cable adapters are arranged ...
  • Page 33: Characteristics, Regulatory, And Safety Information

    4. Characteristics, Regulatory, and Safety Information 4. Characteristics, Regulatory, and Safety Information W2637A and W2638A Probes with logic analyzer cable (E5384A/E5826A) LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 34 W2637A and W2638A Probes with W2639A Oscilloscope Adapter Board LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 35: Spice Decks For W2637A And W2638A Probes

    4. Characteristics, Regulatory, and Safety Information Spice Decks for W2637A and W2638A Probes ************************************************************************************** LPDDR Interposer + Logic Analyzer Cable (E5384A/E5826A/E5827A) SPICE Model ************************************************************************************** *bbspice subcircuit with consecutive port numbers. .SUBCKT bbspice_LAcablelpddr_subckt port_1 port_2 gnd_0 * PORT_1 vi_1 port_1 _net_1 0.00000000000000e+000...
  • Page 36 * STATE_5 _net_15 gnd_0 1.00000000000000e-011 G_A_5_5 _net_15 gnd_0 _net_15 gnd_0 1.34401797487851e-001 G_B_5_2 _net_15 gnd_0 _net_9 gnd_0 -1.00000000000000e-011 * STATE_6 _net_16 gnd_0 1.00000000000000e-011 G_A_6_6 _net_16 gnd_0 _net_16 gnd_0 2.47566797545524e-001 G_B_6_2 _net_16 gnd_0 _net_9 gnd_0 -1.00000000000000e-011 * STATE_7 _net_17 gnd_0 1.00000000000000e-011 G_A_7_7 _net_17 gnd_0 _net_17 gnd_0 1.64751890165784e-001 G_A_7_8 _net_17 gnd_0...
  • Page 37 4. Characteristics, Regulatory, and Safety Information ***************************************************************************** LPDDR Interposer + W2639A SPICE Model ***************************************************************************** *bbspice subcircuit with consecutive port numbers. .SUBCKT bbspice_syslpddr_subckt port_1 port_2 gnd_0 * PORT_1 vi_1 port_1 _net_1 0.00000000000000e+000 vb_1 _net_4 _net_5 0.00000000000000e+000 R_Z0_1 _net_1 _net_2 5.00000000000000e+001 NOISE=0 H_b_1 _net_2 gnd_0...
  • Page 38 * STATE_5 _net_15 gnd_0 1.00000000000000e-011 G_A_5_5 _net_15 gnd_0 _net_15 gnd_0 9.58822912609048e-002 G_A_5_6 _net_15 gnd_0 _net_16 gnd_0 -7.04839193299830e-002 G_B_5_2 _net_15 gnd_0 _net_9 gnd_0 -2.00000000000000e-011 * STATE_6 _net_16 gnd_0 1.00000000000000e-011 G_A_6_6 _net_16 gnd_0 _net_16 gnd_0 9.58822912609048e-002 G_A_6_5 _net_16 gnd_0 _net_15 gnd_0 7.04839193299830e-002 * STATE_7 _net_17 gnd_0 1.00000000000000e-011...
  • Page 39: Electrical Characteristics

    W2637A + W2639A: 233 ps W2638A + W2639A: 233 ps W2637A + W2639A: 200 Ω Input Impedance W2638A + W2639A: 200 Ω freq, Hz Input Impedance of W2637A/W2638A with W2639A Oscilloscope Adapter Board LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 40: Operating Characteristics

    Operating Characteristics The following operating characteristics are not specifications, but are typical operating characteristics for the analysis of the W2637A and W2638A probes with the oscilloscope probe. Table 2 Environmental characteristics (Operating) 0° to + 100° C Temperature 4,600 m (15,000 ft) Altitude Up to 50% noncondensing.
  • Page 41: Safety Symbols

    Hazardous voltage symbol Earth terminal symbol: Used to indicate a circuit common connected to grounded chassis Regulatory Information China RoHS non-restricted for W2637A, W2638A, and W2639A China RoHS restricted for E5384, E5826/7 LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 42: Appendix A: W2639A Rework Instruction Guide

    Appendix A: W2639A Rework Instruction Guide For use when W2639A Oscilloscope Probe Adapter Board is used with DDR2 BGA probe (W2631A and W2633A) Introduction This appendix provides rework information for the following Keysight product: W2639A Oscilloscope Probe Adapter Board ...
  • Page 43 W2631A x16 DDR2 BGA probe  W2633A x8 DDR2 BGA probe  Note: Please contact Keysight to confirm the exact location of the resistor. LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...
  • Page 44 W2639A BGA scope probe adapter pin-out for W2631A Left Flex Wing Right Flex Wing Signal Signal Test Signal Signal Test Test Signal Signal Test Signal Signal Name Name Point Name Name Point Point Name Name Point Name Name DQ14 TP24 DQ15 TP23 DQ11...
  • Page 45 Appendix A: W2639A Rework Instruction Guide Manual Part Number W2638-97003 Printed in Malaysia *W2638-97003* LPDDR BGA Probes and Oscilloscope Adapter Board User’s Guide...

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