NBSG111BAEVB Evaluation Board Manual for NBSG111 http://onsemi.com EVALUATION BOARD MANUAL DESCRIPTION This document describes the NBSG111 evaluation board and the appropriate lab test setups. It should be used in conjunction with the NBSG111 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 NBSG111 GigaComm 1:10 clock data driver. The NBSG111 allows selection between two inputs and fan out 10 identical differential outputs. The Reduced Swing ECL (RSECL) output ensures minimal noise and fast switching edges. The evaluation board is implemented in two layers for higher performance. For standard lab setup and test, a split (dual) power supply is required enabling the 50 impedance from the scope to be used as termination of the ECL signals (VTT = VCC – 2.0 V, in split power supply setup, VTT is the system ground). What measurements can you expect to make? With this evaluation board, the following measurements could be performed in single−ended(1) or differential modes of operation: • Jitter • Output Skew • Gain/Return Loss • Eye Pattern Generation • Frequency Performance • Output Rise and Fall Time • VIHCMR (Input High Common Mode Range) 1. Single−ended measurements can only be made at VCC − VEE = 3.3 V using this board setup. Figure 1. NBSG111 Evaluation Board Semiconductor Components Industries, LLC, 2003 October, 2003 − Rev. 0 1 Publication Order Number: NBSG111BAEVB/D NBSG111BAEVB Setup for Time Domain Measurements Table 1. Basic Equipment Description Example Equipment (Note 1) 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 3 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 Connect Power Step 1: 1a: Three power levels must be provided to the board for VCC, VEE, and GND via the surface mount clips. Using the split power supply mode, GND = VTT = VCC – 2.0 V. Power Supply Connections 3.3 V Setup 2.5 V Setup VCC = 2.0 V VCC = 2.0 V VTT = GND VTT = GND VEE = −1.3 V VEE = −0.5 V Connect Inputs Step 2: 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 (CLK0 and CLK0). For Single−Ended Mode (3.3 V operation only) 2a: Connect the AC coupled single−ended output generator to input. NOTE: For best results, unconnected input should be terminated to VTT through 50 resistor VCC Float VCC = 2.0 V VTT = 0 V Signal Generator VCC SEL SEL Channel 3 GND Q0 CLK0 Channel 1 Channel 2 Channel 4 OUT Q0 Digital Oscilloscope OUT Amplitude = 500 mV Offset = 660 mV Q9 CLK0 VEE EN GND EN Q9 TRIGGER VEE = −1.3 V (3.3 V op) −or− VEE = −0.5 V (2.5 V op) NOTE: VTT = 0 V VCC Float All differential cable pairs must be matched. Due to simplifcation of the block diagram CLK1/CLK1 and Q1 − Q8 connections are not shown. Figure 2. NBSG111 Board Setup − Time Domain (Differential Mode) http://onsemi.com 2 Channel 5 Channel 6 Channel 7 Channel 8 TRIGGER * Q0 − Q9 Ouputs NBSG111BAEVB Setup (continued) Setup Input Signals Step 3: 3a: Set the signal generator amplitude to 500 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 660 mV (the center of a nominal RSECL PECL output). NOTE: The VIHCMR (Input High Voltage Common Mode Range) allows the signal generator offset to vary as long as VIH is within the VIHCMR 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. Connect Output Signals Step 4: 4a: Connect the outputs of the device (Q0, Q1, …) to the Oscilloscope. The oscilloscope sampling head must have internal 50 termination to ground. NOTE: Where a single output is being used, the unconnected output for the pair must be terminated to VTT through a 50 resistor for best operation. Unused pairs may be left unconnected. Since VTT = 0 V, a standard 50 SMA termination is recommended. VCC Float VCC = 2.0 V VTT = 0 V Signal Generator VCC AC_Coupling SEL SEL Channel 3 GND Q0 CLK0 Channel 1 Channel 2 Channel 4 OUT Q0 Digital Oscilloscope OUT Amplitude = 500 mV Offset = 660 mV Q9 50 CLK0 VEE EN GND EN Q9 TRIGGER VTT = 0 V VEE = −1.3 V (3.3 V op) VCC NOTE: Float Channel 5 Channel 6 Channel 7 Channel 8 TRIGGER All differential cable pairs must be matched. Due to simplifcation of the block diagram CLK1/CLK1 and Q1 − Q8 connections are not shown. * Q0 − Q9 Outputs Figure 3. NBSG111 Board Setup − Time Domain (Single−Ended Mode) http://onsemi.com 3 NBSG111BAEVB Setup for Frequency Domain Measurements Table 2. Basic Equipment Description Example Equipment (Note 3) Qty. Power Supply with 2 outputs HP 6624A 1 Vector Network Analyzer (VNA) R&S ZVK (10 MHz to 40 GHz) 1 180° Hybrid Coupler Krytar Model #4010180 1 Bias Tee with 50 Resistor Termination Picosecond Model #5542−219 1 Matched high speed cables with SMA connectors Storm, Semflex 3 Power Supply cables with clips 3 3. Equipment used to generate example measurements. Setup Connect Power Step 1: 1a: Three power levels must be provided to the board for VCC, VEE, and GND via the surface mount clips. Using the split power supply mode, GND = VTT = VCC – 2.0 V. Power Supply Connections NOTE: 3.3 V Setup 2.5 V Setup VCC = 2.0 V VCC = 2.0 V VTT = GND VTT = GND VEE = −1.3 V VEE = −0.5 V For frequency domain measurements, 2.5 V power supply is not recommended because additional equipment (bias tee, etc.) is needed for proper operation. The input signal has to be properly offset to meet VIHCMR range of the device. http://onsemi.com 4 NBSG111BAEVB Setup Test Configurations For Differential Operation Small Signal Setup Input Setup Step 2: 2a: Calibrate VNA from 11.00 GHz to 12 GHz GHz. 2b: Set input level to –35 dBm at the output of the 180° Hybrid coupler (input of the DUT). Output Setup St 3 Step 3: 3a: Set display to measure S21 and record data. Large Signal Setup Input Setup Step 2: 2a: Calibrate VNA from 11.00 GHz to 12 GHz GHz. 2b: Set input levels to −2.0 dBm (500 mV) at the input of DUT. Step 3: Output Setup 3a: Set display to measure S21 and record data. Vector Network Analyzer PORT 1 PORT 2 VCC GND GND Float VCC = 2.0 V 50 VTT = 0 V 50 SEL VCC SEL Bias T GND Q0 CLK0 180 Hybrid Coupler Q0 50 GND 50 Q9 CLK0 VEE EN EN Q9 VTT = 0 V VEE = −1.3 V (3.3 V op) GND 50 GND * Q0 − Q9 Outputs Float VCC NOTE: GND All differential cable pairs must be matched. Due to simplifcation of the block diagram CLK1/CLK1 and Q1 − Q8 connections are not shown. Figure 4. NBSG111 Board Setup – Frequency Domain (Differential Mode) http://onsemi.com 5 NBSG111BAEVB Setup Test Configurations For Single−Ended Operation Single−Ended Mode – Small Signal Input Setup Step 2: Step 3: 2a: Calibrate VNA from 1.0 GHz to 12 GHz. 2b: Set input level to –35 dBm at the input of DUT. Output Setup 3a: Set display to measure S21 and record data. Single−Ended Mode – Large Signal Input Setup Step 2: Step 3: 2a: Calibrate VNA from 1.0 GHz to 12 GHz. 2b: Set input levels to +2 dBm (500 mV) at the input of DUT. Output Setup 3a: Set display to measure S21 and record data. Vector Network Analyzer PORT 1 PORT 2 Float VCC GND VCC = 2.0 V SEL VCC 50 VTT = 0 V SEL Bias T GND Q0 CLK0 Q0 50 GND 50 Q9 CLK0 VEE EN EN GND Q9 GND VTT = 0 V VEE = −1.3 V (3.3 V op) NOTE: 50 GND 50 * Q0 − Q9 Outputs GND VCC Float All differential cable pairs must be matched. Due to simplifcation of the block diagram CLK1/CLK1 and Q1 − Q8 connections are not shown. Figure 5. NBSG111 Board Setup – Frequency Domain (Single−Ended Mode) http://onsemi.com 6 NBSG111BAEVB More Information About Evaluation Board Design Considerations for >10 GHz operation While the NBSG111 is specified to operate at 12 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 ohms) • Distributed effects while bypassing and noise filtering Surface Mount Clip VCC T2 1 T6 VTEN 1 T2 ROSENBERGER SMA ROSENBERGER SMA 0 Surface Mount Clip Surface Mount Clip 1 T7 T2 T3 EN Open Circuit Stub T4 1 EN T7 VTEN T2 0 C2 0 VTCLK0 0 ROSENBERGER SMA ROSENBERGER SMA 1 T1 T2 CLK0 T1 T2 T2 CLK0 1 T2 T2 VTCLK0 NBSG111 VTCLK1 0 ROSENBERGER SMA ROSENBERGER SMA T1 1 T1 ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA ROSENBERGER SMA 1 T2 ROSENBERGER SMA ROSENBERGER SMA 1 ROSENBERGER SMA T2 1 ROSENBERGER SMA T2 T4 C1 1 0 ROSENBERGER SMA T2 T8 1 SEL T2 T3 0 VTSEL Open Circuit Stub C1, C2 = Decoupling Cap Tx = 50 Transmision Line ROSENBERGER SMA T2 T2 VEE Surface Mount Clip 1 1 Q0 − Q9 Outputs Figure 6. Evaluation Board Schematic http://onsemi.com 7 ROSENBERGER SMA 1 T2 NOTE: 1 T2 0 SEL T8 1 ROSENBERGER SMA 1 CLK1 T5 1 1 1 VTSEL Surface Mount Clip 1 T2 CLK1 0 1 1 T2 VTCLK Surface Mount Clip 1 1 0 1 1 ROSENBERGER SMA ROSENBERGER SMA NBSG111BAEVB Table 3. Parts List Part No Description Manufacturer WEB address NBSG111BA 2.5V/3.3V SiGe Differential 1:10 Clock/Data Driver with RSECL Outputs ON Semiconductor http://www.onsemi.com/NBSG111 32K243−40ME3 Gold plated connector Rosenberger http://www.rosenberger.de CO6BLBB2X5UX 2 MHz – 30 GHz capacitor Dielectric Laboratories http://www.dilabs.com Table 4. Board Material Material Thickness Rogers 6002 5.0 mil Copper Plating 32 mil 12.5 mil 1.37 mil Dielectric (5.0 mil) Thick Copper Base Figure 7. Board Stack−up PIN 1 Figure 8. Layout Mask for NBSG111 http://onsemi.com 8 NBSG111BAEVB EXAMPLE MEASUREMENTS IN TIME DOMAIN 10.0 9.0 8.0 Q AMP (mV) 450 7.0 6.0 3.3 V 350 5.0 4.0 RMS JITTER (ps) OUTPUT VOLTAGE AMPLITUDE (mV) 550 2.5 V 3.0 250 2.0 RMS JITTER (ps) 1.0 150 1 2 3 4 5 6 0.0 INPUT FREQUENCY (GHz) Figure 9. Output Voltage Amplitude (VOUTPP) / RMS Jitter vs. Input Frequency (fin) at Ambient Temperature (Typical) Figure 10. NBSG111: Eye Diagram at 6 Gbps with PRBS 2^31−1 (Total Pk−Pk system jitter including signal generator is 28 ps. Device Pk−Pk jitter is typically 14 ps.) http://onsemi.com 9 NBSG111BAEVB 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 NBSG111/D, Data Sheet, NBSG111, 2.5V/3.3V SiGe 1:10 Differential Clock / Data Driver with RSECL Outputs AND8077/D, Application Note, GigaComm (SiGe) SPICE Modeling Kit. AND8075/D, Application Note, Board Mounting Considerations for the FCBGA Packages. ORDERING INFORMATION Orderable Part No Description Package Shipping NBSG111BA 2.5V/3.3V SiGe Differential 1:10 Clock/Data Driver with RSECL Outputs 4X4 mm FCBGA−49 100 Units/Tray NBSG111BA 2.5V/3.3V SiGe Differential 1:10 Clock/Data Driver with RSECL Outputs 4X4 mm FCBGA−49 500 Units/Reel NBSG111BAEVB NBSG111 Evaluation Board http://onsemi.com 10 NBSG111BAEVB PACKAGE DIMENSIONS FCBGA−49 BA SUFFIX PLASTIC 8x8 mm (1.0 mm pitch) BGA FLIP CHIP PACKAGE CASE 489A−02 ISSUE A A NOTES: 1. CONTROLLING DIMENSION: MILLIMETER. 2. DIMENSIONS AND TOLERANCES PER ASME Y14.5M−1994. 3. DIMENSION b IS MEASURED AT THE MAXIMUM SOLDER BALL DIAMETER, PARALLEL TO DATUM PLANE C. 4. DATUM C (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. 6. 489A−01 OBSOLETE, NEW STANDARD 489A−02. A D B ÉÉ ÉÉ A2 TERMINAL A1 CORNER Z E DIM A A1 A2 b D D1 E E1 e Z 4X DETAIL A 0.15 C D1 FEDUCIAL FOR PIN A1 IDENTIFICATION IN THIS AREA e NOTE 5 A B e E1 49 X 0.20 C b NOTE 3 C 0.15 M C A B D 0.08 M C E NOTE 4 0.12 C G 6 5 4 3 2 C SEATING PLANE F 7 MILLIMETERS MIN MAX −−− 1.40 0.3 0.5 0.91 REF 0.40 0.60 8.00 BSC 6.00 BSC 8.00 BSC 6.00 BSC 1.00 BSC A1 49 X 1 DETAIL A (ROTATED 90 C.W.) VIEW Z−Z http://onsemi.com 11 NBSG111BAEVB 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. 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