NB7L14MMNEVB NB7L14M Evaluation Board User's Manual http://onsemi.com EVAL BOARD USER’S MANUAL Description to have equal electrical length on all signal traces from the NB7L14M device to the sense output. The second layer is 32 mils thick copper ground plane. This document describes the NB7L14M evaluation board and the appropriate lab test setups. It should be used in conjunction with the NB7L14M data sheet which contains full technical details on the device specifications and operation. The evaluation board is designed to facilitate a quick evaluation of the NB7L14M GigaCommt clock/data receiver/driver/translator device. The NB7L14M is designed to support the distribution of clock/data signals at high operating frequencies and produces four 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 • Gain/Return Loss • Eye Pattern Generation • Frequency Performance • Output Rise and Fall Time • VCMR (Common Mode Range) This Evaluation Board User’s Manual Contains: Board Lay−up • Information on NB7L14MMNEVB Evaluation Board • Appropriate Lab Setup • Bill of Materials 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 Figure 1. NB7L14M Evaluation Board © Semiconductor Components Industries, LLC, 2012 February, 2012 − Rev. 2 1 Publication Order Number: EVBUM2084/D NB7L14MMNEVB SETUP FOR TIME DOMAIN MEASUREMENTS Table 1. BASIC EQUIPMENT Example Equipment (Note 1) Description Qty. Power Supply with 2 outputs HP6624A 1 Oscilloscope TDS8000 with 80E01 Sampling Head (Note 2) 1 Differential Signal Generator HP 8133A, Advantest D3186 1 Matched high speed cables with SMA connectors Storm, Semflex 10 Power Supply cables with clips 4 1. Equipment used to generate example measurements within this document. 2. 50 GHz sample module used (for effective rise, fall and jitter performance measurement) Setup Step 2: Connect Inputs Step 1: Connect Power For Differential Mode 2a: Connect the differential output of the generator to the differential input of the device (CLK and CLK). 1a: Three power levels must be provided to the board for VCC, VEE, and GND via the surface mount clips. 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 VCC = 0 V Signal Generator VCC GND = 0 V Q3 Q3 GND CLK Channel 1 Channel 2 Channel 3 Q2 Channel 4 OUT Q2 OUT Amplitude = 400 mV Offset = −200 mV CLK VEE Q1 Q0 Q0 GND Q1 TRIGGER GND = 0 V VEE = −3.3 V (3.3 V op) −or− VEE = −2.5 V (2.5 V op) NOTE: Digital Oscilloscope Channel 5 Channel 6 Channel 7 Channel 8 TRIGGER All differential cable pairs must be matched. Figure 2. NB7L14M Board Setup − Time Domain (Differential Mode) http://onsemi.com 2 NB7L14MMNEVB Setup (continued) Step 3: Setup Input Signals Step 4: Connect Output Signals 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 (Voltage 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. 3c: Set the generator output for a PRBS data signal, or for a square wave clock signal with a 50% duty cycle. 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 = GND through a 50 W resistor for best operation. Unused pairs may be left unconnected. Since VCC = GND, a standard 50 W SMA termination is recommended. http://onsemi.com 3 NB7L14MMNEVB MORE INFORMATION ABOUT EVALUATION BOARD Design Considerations for >10 GHz operation 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 ohms) • Distributed effects while bypassing and noise filtering While the NB7L14M is specified to operate at 10 GHz, this evaluation board is designed to support operating frequencies up to 20 GHz. SURFACE MOUNT CLIP C1 0 Q0 VTCLK ROSENBERGER SMA 1 1 T1 T1 CLK T2 Q0 0 ROSENBERGER SMA OPEN CIRCUIT STUB T6 T5 l/2 @ 10 GHz T3 VCC T2 Q1 NB7L14M T2 Q1 T2 Q2 CLK T2 Q2 VTCLK T2 Q3 0 T2 Q3 T2 1 1 1 1 1 1 1 1 ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA 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 (broadband cap with the range from 2 MHz to 30 GHz) Tx = 50 W Transmission line Figure 3. Evaluation Board Schematic http://onsemi.com 4 NB7L14MMNEVB Table 3. BILL OF MATERIALS Part No. Qty. Description Manufacturer WEB Address NB7L14M 1 2.5V/3.3V SiGe Differential 1:4 Clock/Data Driver with CML Outputs and Internal Termination ON Semiconductor http://www.onsemi.com 32K243−40ME3 10 Gold plated connector Rosenberger http://www.rosenberger.de CO6BLBB2X5UX or C0603C104K4RAC 4 2 MHz – 30 GHz capacitor 0603 0.1 mF $ 10% Dielectric Laboratories Kemet* http://www.dilabs.com www.newark.com 5016 4 Test Point − Anvil Keystone* *Components are available through most distributors, i.e. www.newark.com or www.digikey.com. Table 4. BOARD MATERIAL Material Thickness Rogers 6002 5.0 mil Copper Plating 32 mil Pin 1 12.5 mil 1.37 mil Dielectric (5.0 mil) Thick Copper Base Figure 4. Board Stack−up Figure 5. Layout Mask for NB7L14M 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 http://onsemi.com 5 NB7L14MMNEVB 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 NB7L14M/D, Data Sheet. AND8077/D, Application Note, GigaCommt (SiGe) SPICE Modeling Kit. AND8075/D, Application Note, Board Mounting Considerations for the FCBGA Packages. ORDERING INFORMATION Package Shipping† QFN−16 123 Units/Rail NB7L14MMNG QFN−16 (Pb−Free) 123 Units/Rail NB7L14MMNR2 QFN−16 3000 Tape & Reel NB7L14MMNR2G QFN−16 (Pb−Free) 3000 Tape & Reel NB7L14MMNEVB N/A N/A Device NB7L14MMN http://onsemi.com 6 NB7L14MMNEVB PACKAGE DIMENSIONS 16 PIN QFN CASE 485G−01 ISSUE C D A B ÇÇÇ ÇÇÇ PIN 1 LOCATION 0.15 C NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. DIMENSION b APPLIES TO PLATED TERMINAL AND IS MEASURED BETWEEN 0.25 AND 0.30 MM FROM TERMINAL. 4. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. 5. Lmax CONDITION CAN NOT VIOLATE 0.2 MM MINIMUM SPACING BETWEEN LEAD TIP AND FLAG E TOP VIEW 0.15 C (A3) 0.10 C A 16 X SEATING PLANE 0.08 C SIDE VIEW A1 DIM A A1 A3 b D D2 E E2 e K L MILLIMETERS MIN MAX 0.80 1.00 0.00 0.05 0.20 REF 0.18 0.30 3.00 BSC 1.65 1.85 3.00 BSC 1.65 1.85 0.50 BSC 0.18 TYP 0.30 0.50 C D2 16X L 5 NOTE 5 e EXPOSED PAD 8 4 16X 9 E2 K 12 1 16 16X 13 b 0.10 C A B 0.05 C e BOTTOM VIEW NOTE 3 GigaComm is a trademark of Semiconductor Components Industries, LLC (SCILLC). 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. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: [email protected] N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5817−1050 http://onsemi.com 7 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative EVBUM2084/D