© Semiconductor Components Industries, LLC, 2012
February, 2012 − Rev. 2
1 Publication Order Number:
EVBUM2084/D
NB7L14MMNEVB
NB7L14M Evaluation Board
User's Manual
Description
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.
Board Lay−up
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
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.
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
• V
CMR
(Common Mode Range)
This Evaluation Board User’s Manual Contains:
• Information on NB7L14MMNEVB Evaluation Board
• Appropriate Lab Setup
• Bill of Materials
Figure 1. NB7L14M Evaluation Board
http://onsemi.com
EVAL BOARD USER’S MANUAL
NB7L14MMNEVB
http://onsemi.com
2
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 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 1: Connect Power
1a: Three power levels must be provided to the board for
V
CC
, 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
Step 2: Connect Inputs
For Differential Mode
2a: Connect the differential output of the generator to the
differential input of the device (CLK and CLK
).
OUT
Channel 1
Channel 2
OUT
TRIGGER
Channel 3
Channel 4
TRIGGER
Amplitude = 400 mV
Offset = −200 mV
Signal Generator
CLK
CLK
VCC = 0 V
V
CC
V
EE
Q2
Q1
Q1
Q2
Digital Oscilloscope
V
EE
= −3.3 V (3.3 V op)
−or−
VEE = −2.5 V (2.5 V op)
GND = 0 V
GND
GND = 0 V
GND
Figure 2. NB7L14M Board Setup − Time Domain
(Differential Mode)
NOTE: All differential cable pairs must be matched.
Channel 8
Channel 7
Channel 6
Channel 5
Q3
Q0Q0
Q3
NB7L14MMNEVB
http://onsemi.com
3
Setup (continued)
Step 3: Setup Input 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 V
CMR
(Voltage Common Mode Range)
allows the signal generator offset to vary as long
as V
TH
is within the V
CMR
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.
Step 4: Connect Output Signals
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 V
CC
= GND, a standard
50 W
SMA termination is recommended.
NB7L14MMNEVB
http://onsemi.com
4
MORE INFORMATION ABOUT EVALUATION BOARD
Design Considerations for >10 GHz operation
While the NB7L14M is specified to operate at 10 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
Q0
Q1
Q3
1
Q3
V
CC
OPEN CIRCUIT STUB
OPEN CIRCUIT STUB
NB7L14M
NOTE: C1 = Decoupling cap (broadband cap with the range from 2 MHz to 30 GHz)
Tx = 50 W Transmission line
V
EE
CLK
CLK
VTCLK
VTCLK
Q0
Q1
T1
T2
T3T4 T5
T2
T2
T2
1
1
1
1
1
1
T1
T5
0
0
C1
C1
T6
T6
l/2 @ 10 GHz l/2 @ 10 GHz
l/4 @ 10 GHz
SURFACE MOUNT CLIP
SURFACE MOUNT CLIP
0
ROSENBERGER SMA
ROSENBERGER SMA
ROSENBERGER SMA
ROSENBERGER SMA
ROSENBERGER SMA
ROSENBERGER SMA
Figure 3. Evaluation Board Schematic
0
Q2
Q2
T2
T2
T2
T2
1
1
1
ROSENBERGER SMA
ROSENBERGER SMA
ROSENBERGER SMA
ROSENBERGER SMA
NB7L14MMNEVB
http://onsemi.com
5
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
Figure 4. Board Stack−up
12.5 mil
Dielectric (5.0 mil)
Thick Copper Base
1.37 mil
Figure 5. Layout Mask for NB7L14M
Figure 6. Insertion Loss
5 dB
START 1 GHz STOP 12 GHz1 GHz/
11 GHz
NOTE: The insertion loss curve can be used to calibrate out board loss if testing
under small signal conditions.
1 dB/div
Pin 1
NB7L14MMNEVB
http://onsemi.com
6
ADDITIONAL EVALUATION BOARD INFORMATION
www.onsemi.com
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
References
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
Device Package Shipping
†
NB7L14MMN 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
NB7L14MMNEVB
http://onsemi.com
7
PACKAGE DIMENSIONS
16 PIN QFN
CASE 485G−01
ISSUE C
16X
SEATING
PLANE
L
D
E
0.15 C
A
A1
e
D2
E2
b
1
4
58
12
9
16 13
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. L
max
CONDITION CAN NOT VIOLATE 0.2 MM
MINIMUM SPACING BETWEEN LEAD TIP
AND FLAG
B
A
0.15
C
TOP VIEW
SIDE VIEW
BOTTOM VIEW
PIN 1
LOCATION
0.10 C
0.08 C
(A3)
C
16 X
e
16X
NOTE 5
0.10 C
0.05
C
A B
NOTE 3
K
16X
DIM MIN MAX
MILLIMETERS
A 0.80 1.00
A1 0.00 0.05
A3 0.20 REF
b 0.18 0.30
D 3.00 BSC
D2 1.65 1.85
E 3.00 BSC
E2 1.65 1.85
e 0.50 BSC
K
L 0.30 0.50
EXPOSED PAD
0.18 TYP
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. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
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
EVBUM2084/D
GigaComm is a trademark of Semiconductor Components Industries, LLC (SCILLC).
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: orderlit@onsemi.com
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
Loading...