NB3L208KMNGEVB NB3L208K Evaluation Board User's Manual www.onsemi.com Introduction The NB3L208K is a differential 1:8 Clock fanout buffer with High-speed Current Steering Logic (HCSL) outputs. Inputs can directly accept differential LVPECL, LVDS and HCSL signals. Single-ended LVPECL, HCSL, LVCMOS, or LVTTL levels are accepted with a proper external VTH reference supply. These signals will be translated to HCSL and eight identical copies of Clock will be distributed, operating up to 350 MHz. This manual should be used in conjunction with the device datasheet, which contains full technical details on the device specifications and operation. EVAL BOARD USER’S MANUAL • • • • • Top View This evaluation board manual contains: Information on the NB3L208K Evaluation Board Block Diagram and Board Schematic Assembly Instructions Test and Measurement Setup Procedures Bill of Materials Bottom View Figure 1. NB3L208KMNGEVB Top and Bottom View © Semiconductor Components Industries, LLC, 2016 April, 2016 − Rev. 1 1 Publication Order Number: EVBUM2295/D NB3L208KMNGEVB QUICK START LAB SET-UP USER’S GUIDE Equipment Required 1. DC Power Supply 2. Oscilloscope 3. Phase Noise Analyzer 4. Connectors for DC Power Supply 5. 50-W SMA Connectors for I/Os Block Diagram Power Supply VDD GND Generator Agilent E5052B SSA Signal Source Analyzer Tek DPO70404 CH1 CH2 CH3 CH4 Balun VDD GND CLK_IN CLK_IN DIF_0−7 DIF_0−7# NB3L208K DIF_0−7 DIF_0−7# Note: Balun Connected to Outputs Only during Phase Noise Testing. Figure 2. Time and Frequency Domain Block Diagram Power Supplies HCSL Outputs Each VDD, VDD_0 (VX on board), GND_0 (DUTGND on board) and SMAGND power supply has a separate side-launch banana jack located on bottom side of the test board (as shown in Figure 1). HCSL outputs are typically loaded and terminated with a series resistor (RSERIES) = 33-W and 50-W to ground. This can be easily accomplished by connecting the HCSL outputs to the 50-W internal impedance in the oscilloscope. There are on-board RSERIES = 33-W termination resistors installed for each HCSL output. 50 W to Ground via SMA Connector to Oscilloscope RSERIES = 33 W Figure 3. Set-Up for HCSL Output www.onsemi.com 2 3 www.onsemi.com 24 33 W OE#_[5:4] OE#_[3:2] VDD 25 GND_0 GND_0 VDD_0 VDD_0 Figure 4. NB3L208KEVB Schematic 29 OE#_[1:0] 28 IREF 27 R3 475 W 26 C4 0.1 mF SMAGND GND_0 SMAGND OE#_[7:6] 32 31 SMAGND DIF_3 DIF_0 DIF_0# DIF_1 DIF_1# DIF_2 DIF_2# C5 0.1 mF SMAGND EP TIED TO DUT GND DIF_4 VDD_0 SMAGND 23 33 W DIF_4# DIF_5 DIF_5# VDD_0 SMAGND 22 33 W 33 W 20 21 CLK_IN SMAGND SMAGND C6 10 mF 33 W 16 DIF_6 15 DIF_6# 14 GND 19 C3 0.1 mF 13 CLK_IN# 33 W 12 18 11 33 W C2 0.1 mF DIF_3# SMAGND 33 W 33 W 33 W 33 W 33 W 6 5 4 3 2 33 W 33 W 7 1 33 W 8 SMAGND DIF_7 DIF_7# 9 17 C1 0.1 mF 33 W SMAGND 10 SMAGND SMAGND SMAGND SMAGND SMAGND SMAGND R2 50 W R1 50 W SMAGND SMAGND SMAGND SMAGND SMAGND SMAGND SMAGND SMAGND SMAGND NB3L208KMNGEVB 30 NB3L208KMNGEVB Test and Measurement Setup Procedures Power-Up Sequence 1. Connect VDD and VDD_0 (VX on board) of the NB3L208K to DC source with power supply cables (do not turn power on, yet). 2. Connect SMAGND and DUTGND to the appropriate DC source. For differential HCSL inputs, both SMAGND and DUTGND are connected together. 3. Connect the outputs of the generator to the CLK_IN & CLK_IN# inputs with 50-W connectors. For phase noise test, low noise generator is required to ensure the best additive RMS Phase jitter of the DUT. 4. Connect the DIF_n/DIF_n# outputs to the appropriate oscilloscope channel. The board does not have 50-W output termination, thus use of the probes with 50-W termination is required. 1. Turn on DUT power supply. 2. Setup the generator VIH, VIL levels to set up the inputs to desired inputs levels, i.e differential LVPECL, LVDS, and HCSL signals or Single-ended LVPECL, HCSL, LVCMOS, or LVTTL. For differential HCSL inputs, VIL = 0 V and VIH = 700 mV. 3. Monitor DIF_n/DIF_n# outputs on oscilloscope. www.onsemi.com 4 NB3L208KMNGEVB BILL OF MATERIALS Table 1. NB3L208KMNGEVB BILL OF MATERIALS Component Qty. Description Manufacturer Part Number Web Site SMA Connector 22 Edge Mount Johnson 142−0711−821 Banana Jack Connector 2 Red − Side Launch Deltron 571−0500 Mouser #164−6219 Banana Jack Connector 1 Black − Side Launch Deltron 571−0100 Mouser #164−6218 Banana Jack Connector 1 Green − Side Launch Deltron Chip Resistor 9 0-Q 0603 Vishay CRCW06030000Z0EA Digi-Key 541−0.0GTR−ND Chip Resistor 16 33-Q 0402 Panasonic ERJ−2RKF33R0X Digi-Key ERJ−2RKF33R0X Chip Resistor 4 50-Q, 0603 Vishay FC0603E50R0BTBST1 Digi-Key FC0603−50BFTR−ND Chip Resistor 1 475-Q 0603 Vishay TNPW0603475RBEEA Digi-Key 541−2027−2−ND Capacitor 2 10 mF ±10%, Case “C” 25 V or 16 V KEMET T491C106K025AT T491C106K016AS Chip Capacitor 5 0.1 mF ±10%, 0603 AVX 0603C104KAT2A www.avx.com Digi-Key 478−1129−1−ND Stand-Off 4 Standoff, 4−40 1/4 × 5/8 Keystone 1808 Digi-Key 1808K−ND Screw 4 Screw, 4−40 × 0.25, PHP Building Fasteners PMS 440 0025 PH Digi-Key H342−ND Evaluation Board 1 NB3L208KEVB QFN−32 Evaluation Board ON Semiconductor NB3L208KEVB Device Under Test 1 DUT ON Semiconductor NB3L208K Mouser www.onsemi.com NOTE: Components are available through most distributors, i.e. www.newark.com, www.Digikey.com. 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