© Semiconductor Components Industries, LLC, 2014
July, 2017 − Rev. 2 1Publication Order Number:
EVBUM2241/D
NB7L1008MNGEVB
NB7L1008MNG Evaluation
Board User's Manual
Introduction
The NB7L1008 is a high performance differential
1:8 Clock/Data fanout buffer that operates up to
12 Gbps/7 GHz with a 2.5 V or 3.3 V power supply.
ON Semiconductor has developed a “universal” QFN−32
evaluation board and configured it for the NB7L1008. This
evaluation board was designed to provide a flexible and
convenient platform to quickly evaluate, characterize and
verify the operation of the NB7L1008.
This evaluation board manual contains:
•Information on the NB7L1008 Evaluation Board
•Test and Measurement Setup Procedures
This manual should be used in conjunction with the device
datasheet, which contains full technical details on the device
specifications and operation.
Board Layout
The NB7L1008 Evaluation Board provides a high
bandwidth, 50 - W controlled impedance environment and is
implemented in one layer.
Layer Stack
L1 (Rogers)
High-performance SMA connectors are provided for all
high-speed input & output signal access.
Evaluation Board Assembly Instructions
The QFN−32 evaluation board is designed for
characterizing devices in a 50-W laboratory environment
using high bandwidth equipment.
Output Loading/Termination
LVPECL Outputs
Table 1. DIFFERENTIAL INPUTS DRIVEN SINGLE – ENDED (Notes 1 & 2)
Symbol Characteristic Min Typ Max Unit
VIH Single – Ended Input High Voltage Vth + 75 − VCC mV
VIL Single – Ended Input Low Voltage VEE − Vth − 100 mV
Vth Input Threshold Reference Voltage Range VEE + 1100 − VCC − 100 mV
VISE Single – Ended Input Voltage (VIH – VIL) 200 − 1200 mV
1. Vth, VIH, VIL and VISE parameters must be complied with simultaneously.
2. Vth is applied to the complementary input when operating in single-ended mode.
Table 2. DIFFERENTIAL INPUTS DRIVEN DIFFERENTIALLY (IN, INB) (Note 3)
Symbol Characteristic Min Typ Max Unit
VIHD Differential Input High Voltage VEE + 1100 − VCC mV
VILD Differential Input Low Voltage VEE − VIHD − 100 mV
VID Differential Input Voltage (VIHD – VILD) 100 − 1200 mV
IIH Input High Current −150 40 +150 mA
IIL Input Low Current −150 5 +150 mA
3. VIHD, VILD, VID and VCMR parameters must be complied with simultaneously.
If the input signals to the NB7L1008 require termination,
internal 50-W resistors are provided via the VT pin and
grounded using a SMA grounding plug then and should be
stimulated with the appropriate voltage levels.
NOTE: For this evaluation board, VT is connected to
ground, thus it can only be used for LVPECL
inputs.
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EVAL BOARD USER’S MANUAL
NB7L1008MNGEVB
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Figure 1. Test Board
1. Connect the appropriate power supplies to VCC,
DUTGND.
2. Connect a signal generator to the input SMA
connectors. Setup input signal levels according to
the device data sheet.
3. Connect a test measurement device to the device’s
output SMA connectors.
NOTE: The test measurement device must contain 50-W
termination.
Table 3. NB7L1008, LVPECL INPUTS AND LVPECL OUTPUTS
Device Pin Power Supply Connector Power Supply
VCC VCC = 2 V
50 W Input VT = 0 V
DUTGND DUTGND = VEE = −0.5 V (for 2.5 V) and −1.3 V (for 3.3 V)
Table 4. NB7L1008, CML INPUTS AND LVPECL OUTPUTS
Device Pin Power Supply Connector Power Supply
VCC VCC = 2 V
50 W Input VT = VCC
DUTGND DUTGND = VEE = −0.5 V (for 2.5 V) and −1.3 V (for 3.3 V)
Table 5. NB7L1008, LVDS INPUTS AND LVPECL OUTPUTS
Device Pin Power Supply Connector Power Supply
VCC VCC = 2 V
50 W Input VT = Open
DUTGND DUTGND = VEE = −0.5 V (for 2.5 V) and −1.3 V (for 3.3 V)
NB7L1008MNGEVB
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Figure 2. Schematic Drawing
Table 6. BILL OF MATERIALS
Components Manufacturer Description Manufacturer
Part Number Web Site
SMA Connector Rosenberger High Performance
SMA Connector, Side
Launch, Gold Plated
32K243-40ME3 http://www.rosenberger.de
http://www.rosenbergerna.com
SMA Connector Johnson-Emerson SMA Connector, Side
Launch, Gold Plated 142-0701-801 http://www.digikey.com
Surface Mount Test
Points Keystone* SMT Compact Test
Point 5016 http://www.keylco.com
Chip Capacitor AVC Corporation* 0603 0.1 mF ±10% 0603C104KAT2A http://www.avxcorp.com
Chip Capacitor Kemet 1206 0.01 mF ±10% C1206C103K5RACTU http://www.newark.com
Chip Capacitor TDK 0603 0.1 mF ±10% C3216X5R1H106K160AB http://www.newark.com
Evaluation Board ON Semiconductor QFN 32 Evaluation
Board − 2−Layer http://www.onsemi.com
Device Samples ON Semiconductor NB7L1008MNG http://www.onsemi.com
*Components are available through most distributors, i.e. www.newark.com, www.Digikey.com
NB7L1008MNGEVB
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4
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