NB7L32MMNEVB NB7L32M Evaluation Board User's Manual http://onsemi.com Description EVAL BOARD USER’S MANUAL This document describes the NB7L32M evaluation board and the appropriate lab test setups (See Figure 1). It should be used in conjunction with the NB7L32M data sheet which contains full technical details on the device specification and operation. The evaluation board is designed to facilitate a quick evaluation of the NB7L32M GigaCommt Clock Driver. The NB7L32M is designed to support the distribution of clock/data signals at high operating frequencies and produces two equal differential clock/data outputs from a single input clock/data. The Current Mode Logic (CML) output ensures minimal noise and fast switching edges. The evaluation board is implemented in two layers for higher performance. What measurements can you expect to make? With this evaluation board, the following measurements could be performed in single−ended or differential modes of operation: • Jitter • Output Skew • Gain/Return Loss • Eye Pattern Generation • Frequency Performance • Output Rise and Fall Time • VCMR (Common Mode Range) Board Lay−up The board is implemented in two layers and provides a high bandwidth 50 W controlled impedance environment for higher performance. The first layer or primary trace layer is 5 mils thick Rogers RO6002 material, which is engineered to have equal electrical length on all signal traces from the NB7L32M device to the sense output. The second layer is 32 mils thick copper ground plane. This Evaluation Board User’s Manual Contains: • Information on NB7L32MMNEVB Evaluation Board • Appropriate Lab Setup • Bill of Materials Figure 1. NB7L32M Evaluation Board © Semiconductor Components Industries, LLC, 2012 March, 2012 − Rev. 1 1 Publication Order Number: EVBUM2086/D NB7L32MMNEVB SETUP FOR TIME DOMAIN MEASUREMENTS Table 1. BASIC EQUIPMENT Example Equipment (Note 1) Description Qty. Power Supply with 2 outputs HP6624A 1 Oscilloscope TDS8200 or TDS8000 1 Differential Signal Generator HP 8133A, Advantest D3186 1 Matched high speed cables with SMA connectors Storm, Semflex 4 Power Supply cables with clips 5 1. Equipment used to generate example measurements within this document. Setup Step 1: Connect Power Step 2: Connect Inputs 1a: Two power levels must be provided to the board for VCC, VEE, and GND via the surface mount clips. For Differential Mode (3.3 V and 2.5 V operation) 2a: Connect the differential output of the generator to the differential input of the device (CLK and CLK). Table 2. POWER SUPPLY CONNECTIONS 3.3 V Setup 2.5 V Setup VCC = 0 V VCC = 0 V GND = 0 V GND = 0 V VEE = −3.3 V VEE = −2.5 V Digital Oscilloscope R VCC = 0 V Signal Generator VCC OUT OUT Amplitude = 500 mV Offset = −250 mV TRIGGER CLK C1 C1 CLK GND Channel 1 Q Channel 2 Q VEE VTT = 0 V VCC = 0 V VEE = −3.3 V (3.3 V op) VEE = −2.5 V (2.5 V op) NOTE: All differential cable pairs must be matched. All VCC pins have to be connected for proper device operation. Figure 2. NB7L32M Board Setup − Time Domain (Differential Mode) http://onsemi.com 2 TRIGGER NB7L32MMNEVB Setup (continued) Step 3: Setup Input Signals Set the generator output for a PRBS data signal, or for a square wave clock signal with a 50% duty cycle. 3a: Set the signal generator amplitude to 400 mV. NOTE: The signal generator amplitude can vary from 75 mV to 900 mV to produce a 400 mV DUT output. 3b: Set the signal generator offset to −200 mV (the center of a nominal NCML output). NOTE: The VCMR (Input Common Mode Range) allows the signal generator offset to vary as long as VTH is within the VCMR range. Refer to the device data sheet for further information. Step 4: Connect Output Signals 4a: Connect the outputs of the device (Q0, Q1, …) to the oscilloscope. The oscilloscope sampling head must have internal 50 W termination to ground. NOTE: Where a single output is being used, the unconnected output for the pair must be terminated to VCC through a 50 W resistor for best operation. Unused pairs may be left unconnected. MORE INFORMATION ABOUT EVALUATION BOARD Design Considerations for >10 GHz operation While the NB7L32M is specified to operate at 10 GHz, this evaluation board is designed to support operating frequencies up to 20 GHz. The following considerations played a key role to ensure this evaluation board achieves high−end microwave performance: • Optimal SMA connector launch • Minimal insertion loss and signal dispersion • Accurate Transmission line matching (50 W) • Distributed effects while bypassing and noise filtering http://onsemi.com 3 NB7L32MMNEVB SURFACE MOUNT CLIP OPEN CIRCUIT STUB T6 l/4 @ 10 GHz T5 l/2 @ 10 GHz T3 VCC C1 0 VTCLK ROSENBERGER SMA ROSENBERGER SMA 1 1 R T3 1 ROSENBERGER SMA CLK T1 NB7L32M CLK T1 Q VTCLK T2 Q 0 T2 1 1 ROSENBERGER SMA ROSENBERGER SMA 0 T5 l/2 @ 10 GHz C1 T6 OPEN CIRCUIT STUB T4 l/4 @ 10 GHz VEE SURFACE MOUNT CLIP NOTE: C1 = Decoupling cap and Tx = 50 W Transmission line Figure 3. Evaluation Board Schematic Table 3. BILL OF MATERIALS Part No Qty Description Manufacturer WEB address NB7L32MMN 1 2.5 V / 3.3 V, 14 GHz ÷ 2 Clock Divider with CML output and Internal Termination ON Semiconductor http://www.onsemi.com/ NB7L32M 32K243−40ME3 5 Gold plated connector Rosenberger http://www.rosenberger.de CO6BLBB2X5UX 4 2 MHz – 30 GHz capacitor Dielectric Laboratories http://www.dilabs.com 5016 5 Test point − Anvll Keystone* http://www.newark.com http://www.digikey.com *Components are available through distribution. Table 4. BOARD MATERIAL Material Thickness Rogers 6002 5.0 mil Copper Plating 32 mil http://onsemi.com 4 NB7L32MMNEVB 12.5 mil Pin 1 1.37 mil Dielectric (5.0 mil) Thick Copper Base Figure 4. Board Stack−up Figure 5. Layout Mask for NB7L32M 11 GHz 1 dB/div 5 dB START 1 GHz NOTE: 1 GHz/ STOP 12 GHz The insertion loss curve can be used to calibrate out board loss if testing under small signal conditions. Figure 6. Insertion Loss ADDITIONAL EVALUATION BOARD INFORMATION www.onsemi.com References In all cases, the most up−to−date information can be found on our website. • Sample orders for devices and boards • New Product updates • Literature download/order • IBIS and Spice models NB7L32M/D Data Sheet. AND8077/D, Application Note, GigaCommt (SiGe) SPICE Modeling Kit. AND8075/D, Application Note, Board Mounting Considerations for the FCBGA Packages. BRD8017/D, Brochure, Clock and Data Management Solutions. ORDERING INFORMATION Package Shipping† NB7L32MMNG QFN−16 (Pb−Free) 123 Units / Rail NB7L32MMNR2G QFN−16 (Pb−Free) 3000 / Tape & Reel Device †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://onsemi.com 5 NB7L32MMNEVB PACKAGE DIMENSIONS FCBGA−16 BA SUFFIX PLASTIC 4X4 (mm) BGA FLIP CHIP PACKAGE CASE 489−01 ISSUE O LASER MARK FOR PIN 1 IDENTIFICATION IN THIS AREA −X− D M −Y− K E M 0.20 3X e 4 3 2 FEDUCIAL FOR PIN A1 IDENTIFICATION IN THIS AREA 1 A B 3 C 16 X b D S VIEW M−M 0.15 M Z X Y 0.08 M Z NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSION b IS MEASURED AT THE MAXIMUM SOLDER BALL DIAMETER, PARALLEL TO DATUM PLANE Z. 4. DATUM Z (SEATING PLANE) IS DEFINED BY THE SPHERICAL CROWNS OF THE SOLDER BALLS. 5. PARALLELISM MEASUREMENT SHALL EXCLUDE ANY EFFECT OF MARK ON TOP SURFACE OF PACKAGE. DIM A A1 A2 b D E e S MILLIMETERS MIN MAX 1.40 MAX 0.25 0.35 1.20 REF 0.30 0.50 4.00 BSC 4.00 BSC 1.00 BSC 0.50 BSC 5 0.15 Z A A2 A1 −Z− 16 X 4 0.10 Z DETAIL K ROTATED 90 _ CLOCKWISE GigaComm is a trademark of Semiconductor Components Industries, LLC. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. 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