NB7L216MNEVB NB7L216 Evaluation Board User's Manual http://onsemi.com EVAL BOARD USER’S MANUAL Description What measurements can you expect to make? This document describes the NB7L216 evaluation board and the appropriate lab test setups. It should be used in conjunction with the NB7L216 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 NB7L216 GigaCommt High Gain Differential Receiver/Driver. 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 • VCMR (Common Mode Range) Board Lay−up The evaluation board is implemented in two layers and provides a high bandwidth 50 W controlled impedance environment for higher performance. 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 NB7L216 device to the sense output. The second layer is 32 mils thick copper ground plane. For standard lab setup and test, a split (dual) power supply is required enabling the 50 ohm impedance in 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). 1. Single−ended measurements can only be made at VCC − VEE = 3.3 V using this board setup. Figure 1. NB7L216 Evaluation Board © Semiconductor Components Industries, LLC, 2012 February, 2012 − Rev. 1 1 Publication Order Number: EVBUM2085/D NB7L216MNEVB SETUP FOR TIME DOMAIN MEASUREMENTS Table 1. BASIC EQUIPMENT Example Equipment (Note 1) Description Qty. Power Supply with 4 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 4 Power Supply Cables with Clips 3/4 1. Equipment used to generate example measurements. 2. 50 GHz sampling head used (for effective rise, fall and jitter performance measurement) Setup Step 1: Connect Power Step 2: Connect Inputs 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. 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 (D and D). For Single−Ended Mode (3.3 V operation only) 2a: Connect the AC coupled single−ended output generator to input. NOTE: Device may oscillate when the input is not driven. For best results, unconnected input should be terminated to VTT through 50 W resistor. Table 2. NB7L216 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 VCC = 2.0 V VTT = 0 V Advantest D3186 Signal Generator (12 GHz) OUT OUT Amplitude = 500 mV Offset = 660 mV TRIGGER NOTE: VCC Tektronix TDS8000 Digital Oscilloscope GND C1 D Q D C1 VEE VBB VBB Q Channel 1 (80E01) Channel 2 (80E01) GND VTT = 0 V VEE = −1.3 V (3.3 V op) VEE = −0.5 V (2.5 V op) TRIGGER All differential cable pairs must be matched. Figure 2. NB7L216 Board Setup − Time Domain (Differential Mode) http://onsemi.com 2 NB7L216MNEVB Setup (continued) Step 3: Setup Input Signals Step 4: Connect Output Signals 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. 4a: Connect the outputs of the device (Q, Q) 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 VTT through a 50 W resistor for best operation. Unused pairs may be left unconnected. Since VTT = 0 V, a standard 50 W SMA termination is recommended. 3b: Set the signal generator offset to 660 mV (the center of a nominal RSECL output). NOTE: The VCMR (Voltage Common Mode Range) allows the signal generator offset to vary as long as crosspoint 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. VCC = 2.0 V VTT = 0 V Advantest D3186 Signal Generator (12 GHz) VCC AC Coupling OUT Tektronix TDS8000 Digital Oscilloscope GND C1 D Channel 1 (80E01) Q OUT D Amplitude = 500 mV Offset = 660 mV VBB Channel 2 (80E01) Q C1 VEE GND TRIGGER VTT = 0 V VBB VEE = −1.3 V (3.3 V op) TRIGGER NOTE: All differential cable pairs must be matched. Figure 3. NB7L216 Board Setup − Time Domain (Single−Ended Mode) SETUP FOR FREQUENCY DOMAIN MEASUREMENTS Table 3. BASIC EQUIPMENT Example Equipment (Note 3) Description Qty. Power Supply with 4 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 W Resistor Termination Picosecond Model #5542−219 1 Matched High Speed Cables with SMA Connectors Storm, Semflex 3 Power Supply Cables with Clips 3/4 3. Equipment used to generate example measurements within this document. http://onsemi.com 3 NB7L216MNEVB Setup Step 1: Connect Power Setup Test Configurations For Differential Operation 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. Small Signal Setup Step 2: Input Setup 2a: Calibrate VNA from 1.0 GHz to 12 GHz. Set input level to –35 dBm at the output of the 180° Hybrid coupler (input of the DUT). Table 4. NB7L216 POWER SUPPLY CONNECTIONS 3.3 V Setup Step 3: Output Setup VCC = 2.0 V 3a: Set display to measure S21 and record data. VTT = GND Large Signal Setup VEE = −1.3 V Step 2: Input Setup NOTE: 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 VCMR range of the device. 2a: Calibrate VNA from 1.0 GHz to 12 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. Rohde & Schwartz Vector Network Analyzer PORT 1 PORT 2 VCC = 2.0 V VTT = 0 V GND GND 50 W VCC GND 50 W C1 D Q 180 Hybrid Coupler D Q C1 VBB VBB VEE GND Bias T 50 W GND VTT = 0 V VEE = −1.3 V (3.3 V op) Figure 4. NB7L216 Board Setup – Frequency Domain (Differential Mode) Setup Test Configurations For Single−Ended Operation Single−Ended Mode − Small Signal Single−Ended Mode − Large Signal Step 2: Input Setup Step 2: Input Setup 2a: Calibrate VNA from 1.0 GHz to 12 GHz. 2b: Set input level to –35 dBm at the input of DUT. 2a: Calibrate VNA from 1.0 GHz to 12 GHz. 2b: Set input levels to +2 dBm (500 mV) at the input of DUT. Step 3: Output Setup 3a: Set display to measure S21 and record data. Step 3: Output Setup 3a: Set display to measure S21 and record data. http://onsemi.com 4 NB7L216MNEVB Rohde & Schwartz Vector Network Analyzer PORT 1 PORT 2 VCC = 2.0 V VTT = 0 V GND VCC GND 50 W C1 D Q D 50 W C1 VBB VEE Q GND GND VBB Bias T 50 W GND VTT = 0 V VEE = −1.3 V (3.3 V op) Figure 5. NB7L216 Board Setup – Frequency Domain (Single−Ended Mode) http://onsemi.com 5 NB7L216MNEVB MORE INFORMATION ABOUT EVALUATION BOARD Design Considerations for >12 GHz operation While the NB7L216 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 OPEN CIRCUIT STUB T6 l/4 @ 10 GHz T5 l/2 @ 10 GHz T3 VCC C1 0 VTCLK 0 ROSENBERGER SMA ROSENBERGER SMA 1 1 T1 T1 Q0 T2 CLK 1 ROSENBERGER SMA NB7L216 CLK Q0 T2 1 ROSENBERGER SMA VTCLK 0 0 T5 l/2 @ 10 GHz C1 T6 OPEN CIRCUIT STUB T4 l/4 @ 10 GHz VBB VEE SURFACE MOUNT CLIP NOTE: C1, C2* = Decoupling cap Tx = 50 W Transmission line Figure 6. Evaluation Board Schematic http://onsemi.com 6 NB7L216MNEVB Table 5. BILL OF MATERIALS Part No QTY Description Manufacturer WEB address NB7L216 1 Evaulation Board ON Semiconductor http://www.onsemi.com 5016 11 Test Point − ANVIL Keystone http://www.newark.com http://www.digikey.com 32K243−40ME3 4 Gold plated connector Rosenberger http://www.rosenberger.de CO6BLBB2X5UX CO603C104K6RAC 8 2 MHz – 30 GHz capacitor 0603 0.1 mF ± 10% Dielectric Laboratories Kemet http://www.dilabs.com http://www.newark.com Table 6. BOARD MATERIAL Material Thickness Rogers 6002 5 mil Copper Plating 32 mil Pin 1 12.5 mil 1.37 mil Dielectric (5.0 mil) Thick Copper Base Figure 7. Board Stack−up Figure 8. Layout Mask for NB7L216 11 GHz 1 dB/div 5 dB START 1 GHz NOTE: 1 GHz/ H STOP 12 GHz The insertion loss curve can be used to calibrate out board loss if testing under small signal conditions. Figure 9. Insertion Loss http://onsemi.com 7 NB7L216MNEVB 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 NB7L216 Data Sheet, 2.5V/3.3V, 12Gb/s Multi Level Clock/Data Input to RSECL, High Gain Receiver/Buffer/Translator with Internal Termination AND8077/D, Application Note, GigaCommt (SiGe) SPICE Modeling Kit. AND8075/D, Application Note, Board Mounting Considerations for the FCBGA Packages. ORDERING INFORMATION Device NB7L216MN Package Shipping† QFN−16 123 Units / Rail NB7L216MNG QFN−16 (Pb−Free) 123 Units / Rail NB7L216MNR2 QFN−16 3000 / Tape & Reel QFN−16 (Pb−Free) 3000 / Tape & Reel NB7L216MNR2G †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 8 NB7L216MNEVB PACKAGE DIMENSIONS 16 PIN QFN CASE 485G−01 ISSUE B D PIN 1 LOCATION A B ÇÇÇ ÇÇÇ 0.15 C E 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 DIM A A1 A3 b D D2 E E2 e K L TOP VIEW 0.15 C (A3) 0.10 C A 16 X SEATING PLANE 0.08 C SIDE VIEW A1 C SOLDERING FOOTPRINT* D2 16X L 5 NOTE 5 e 4 16X 3.25 0.128 0.30 0.012 EXPOSED PAD 9 E2 K 12 1 16 16X e 1.50 0.059 3.25 0.128 13 b 0.10 C A B 0.05 C 0.575 0.022 EXPOSED PAD 8 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 0.20 −−− 0.30 0.50 BOTTOM VIEW 0.50 0.02 NOTE 3 0.30 0.012 SCALE 10:1 mm Ǔ ǒinches *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. 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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