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© Semiconductor Components Industries, LLC, 2012
February, 2012 − Rev. 1
1 Publication Order Number:
EVBUM2085/D
NB7L216MNEVB
NB7L216 Evaluation Board
User's Manual
Description
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.
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 (V
TT
= VCC – 2.0 V, in split
power supply setup, V
TT
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
• V
CMR
(Common Mode Range)
1. Single−ended measurements can only be made at
V
CC
− VEE = 3.3 V using this board setup.
Figure 1. NB7L216 Evaluation Board
http://onsemi.com
EVAL BOARD USER’S MANUAL
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SETUP FOR TIME DOMAIN MEASUREMENTS
Table 1. BASIC EQUIPMENT
Description Example Equipment (Note 1) 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
1a: Three power levels must be provided to the board for
V
CC
, VEE, and GND via the surface mount clips. Using the
split power supply mode, GND = V
TT
= VCC – 2.0 V.
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
Step 2: Connect Inputs
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 V
TT
through 50 W
resistor.
OUT
OUT
TRIGGER
Channel 1 (80E01)
TRIGGER
Amplitude = 500 mV
Offset = 660 mV
Advantest D3186
Signal Generator
(12 GHz)
D
D
VCC = 2.0 V
V
CC
V
BB
Q
Q
Tektronix TDS8000
Digital Oscilloscope
V
EE
= −1.3 V (3.3 V op)
V
EE
= −0.5 V (2.5 V op)
VTT = 0 V
GND
VTT = 0 V
GND
Figure 2. NB7L216 Board Setup − Time Domain (Differential Mode)
NOTE: All differential cable pairs must be matched.
Channel 2 (80E01)
V
EE
V
BB
C1
C1
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Setup (continued)
Step 3: Setup Input 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.
3b: Set the signal generator offset to 660 mV (the center of
a nominal RSECL output).
NOTE: The V
CMR
(Voltage Common Mode Range)
allows the signal generator offset to vary as long
as crosspoint 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 (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 V
TT
= 0 V, a standard 50 W
SMA termination is recommended.
OUT
OUT
TRIGGER
Channel 1 (80E01)
TRIGGER
Amplitude = 500 mV
Offset = 660 mV
Advantest D3186
Signal Generator
(12 GHz)
D
D
V
BB
Q
Q
Tektronix TDS8000
Digital Oscilloscope
V
EE
= −1.3 V (3.3 V op)
GND
VTT = 0 V
Channel 2 (80E01)
V
EE
V
BB
Figure 3. NB7L216 Board Setup − Time Domain (Single−Ended Mode)
AC Coupling
C1
C1
V
CC
= 2.0 V
V
CC
VTT = 0 V
GND
NOTE: All differential cable pairs must be
matched.
SETUP FOR FREQUENCY DOMAIN MEASUREMENTS
Table 3. BASIC EQUIPMENT
Description Example Equipment (Note 3) 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.
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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. Using the
split power supply mode, GND = V
TT
= VCC – 2.0 V.
Table 4. NB7L216 POWER SUPPLY CONNECTIONS
3.3 V Setup
VCC = 2.0 V
VTT = GND
VEE = −1.3 V
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 V
CMR
range of the
device.
Setup Test Configurations For Differential Operation
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).
Step 3: Output Setup
3a: Set display to measure S21 and record data.
Large Signal Setup
Step 2: Input Setup
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.
D
D
V
BB
Q
Q
V
EE
= −1.3 V (3.3 V op)
GND
VTT = 0 V
V
EE
V
BB
Rohde & Schwartz
Vector Network Analyzer
Figure 4. NB7L216 Board Setup – Frequency Domain (Differential Mode)
50 W
180 Hybrid
Coupler
GND
Bias T
50 W
GND
PORT 2PORT 1
GND
50 W
C1
C1
VCC = 2.0 V
V
CC
VTT = 0 V
GND
Setup Test Configurations For Single−Ended Operation
Single−Ended Mode − Small Signal
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.
Step 3: Output Setup
3a: Set display to measure S21 and record data.
Single−Ended Mode − Large Signal
Step 2: Input Setup
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.
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Figure 5. NB7L216 Board Setup – Frequency Domain (Single−Ended Mode)
50 W
GND
D
D
V
BB
Q
Q
V
EE
= −1.3 V (3.3 V op)
GND
VTT = 0 V
V
EE
V
BB
Rohde & Schwartz
Vector Network Analyzer
Bias T
50 W
GND
PORT 2PORT 1
GND
50 W
C1
C1
VCC = 2.0 V
V
CC
VTT = 0 V
GND
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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
Q0
V
CC
OPEN CIRCUIT STUB
OPEN CIRCUIT STUB
NB7L216
NOTE: C1, C2* = Decoupling cap
Tx = 50 W Transmission line
V
EE
CLK
CLK
VTCLK
VTCLK
Q0
T1
T3
T4
T5
T2
T2
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
Figure 6. Evaluation Board Schematic
0
l/4 @ 10 GHz
V
BB
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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
Figure 7. Board Stack−up
12.5 mil
Dielectric (5.0 mil)
Thick Copper Base
1.37 mil
Figure 8. Layout Mask for NB7L216
Figure 9. Insertion Loss
NOTE: The insertion loss curve can be used to calibrate out board loss if testing
under small signal conditions.
5 dB
START 1 GHz STOP 12 GHz1 GHz/
11 GHz
H
1 dB/div
Pin 1
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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
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 Package Shipping
†
NB7L216MN QFN−16 123 Units / Rail
NB7L216MNG QFN−16
(Pb−Free)
123 Units / Rail
NB7L216MNR2 QFN−16 3000 / Tape & Reel
NB7L216MNR2G QFN−16
(Pb−Free)
3000 / Tape & Reel
†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.
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NB7L216MNEVB
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PACKAGE DIMENSIONS
16 PIN QFN
CASE 485G−01
ISSUE B
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 0.20 −−−
L 0.30 0.50
EXPOSED PAD
ǒ
mm
inches
Ǔ
SCALE 10:1
0.50
0.02
0.575
0.022
1.50
0.059
3.25
0.128
0.30
0.012
3.25
0.128
0.30
0.012
EXPOSED PAD
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
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
EVBUM2085/D
GigaComm is a trademark of Semiconductor Components Industries, LLC.
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
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