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ON Semiconductor NB7V33MMNG User manual

Semiconductor Components Industries, LLC, 2013
May, 2013 −Rev. 0
1Publication Order Number:
EVBUM2187/D
NB7V33MMNGEVB
NB7V33MMNG
Evaluation Board
User's Manual
Introduction
ON Semiconductor has developed the QFN16EVB
evaluation board for its high-performance devices packaged
in the 16-pin QFN. This evaluation board was designed to
provide a flexible and convenient platform to quickly
evaluate, characterize and verify the operation of various
ON Semiconductor products. Many QFN16EVBs are
dedicated with a device already installed, and can be ordered
from www.onsemi.com at the specific device web page.
This evaluation board manual contains:
Information on 16-lead QFN Evaluation Board
Assembly Instructions
Appropriate Lab Setup
Bill of Materials
This user’s manual provides detailed information on
board contents, layout and its use. It should be used in
conjunction with an appropriate ON Semiconductor device
datasheet located at www.onsemi.com. The datasheet
contains the technical device specifications.
Board Layout
The QFN16 Evaluation Board provides a high bandwidth,
50 Wcontrolled impedance environment and is
implemented in four layers. The first layer or primary trace
layer is 0.008thick Rogers RO4003 material, and is
designed to have equal electrical length on all signal traces
from the device under test (DUT) pins to the SMA
connectors. The second layer is the 1.0 oz copper ground
plane and is primarily dedicated for the SMA connector
ground plane. FR4 dielectric material is placed between the
second and third layers and between third and fourth layers.
The third layer is also 1.0 oz copper plane. A portion of this
layer is designated for the device VCC and DUTGND power
planes. The fourth layer is the secondary trace layer.
Figure 1. Top and Bottom View of the 16 QFN Evaluation Board
Top View Bottom View
http://onsemi.com
EVAL BOARD USER’S MANUAL
NB7V33MMNGEVB
http://onsemi.com
2
Figure 2. Enlarged Bottom View
Figure 3. Enlarged Bottom View of the Evaluation Board
Pin 12
Pin 11
Pin 10
Pin 9
Pin 1
Pin 2
Pin 3
Pin 4
Pin 13
Pin 14
Pin 15
Pin 16
Pin 8
Pin 7
Pin 6
Pin 5
DUT_GND
SMA_GND
VCC
VEE/DUTGND
SMA_GND
Figure 4. Evaluation Board Layout, 4 Layer
LAYER 1 (TOP SIDE) 1 OZ
ROGERS 4003 0.008 in
LAYER 2 (GROUND PLANE P1) 1 OZ
FR−4 0.020 in
LAYER 3 (GROUND, VCC & VEE, PLANE P2) 1 OZ
FR−4 0.025 in
LAYER 4 (BOTTOM SIDE) 1 OZ
SILKSCREEN (TOP SIDE)
0.062 0.007
NB7V33MMNGEVB
http://onsemi.com
3
Figure 5. Evaluation Board Layout
Bottom ViewTop View
Evaluation Board Assembly Instructions
The QFN−16 evaluation board is designed for
characterizing devices in a 50 Wlaboratory environment
using high bandwidth equipment. Each signal trace on the
board has a via at the DUT pin, which provides an option of
placing a termination resistor on the board bottom,
depending on the input/output configuration (see Table 1,
Configuration for Device: NB7V33M). Table 4 contains the
Bill of Materials for this evaluation board.
The QFN16EVB was designed to accommodate a custom
QFN−16 socket. Therefore, some external components are
installed on the bottom side of the board.
Solder the Device on the Evaluation Board
The soldering of a device to the evaluation board can be
accomplished by hand soldering or solder reflow techniques
using solder paste. Make sure pin 1 of the device is located
properly and all the pins are aligned to the footprint pads.
Solder the QFN−16 device to the evaluation board. As
mentioned earlier, many QFN16EVBs are dedicated with a
device already installed, and can be ordered from
onsemi.com at the specific device web page.
Connecting Power and Ground
On the top side of the evaluation board, solder the four
surface mount test point clips (anvils) to the pads labeled
VCC, VEE/DUTGND, SMAGND, and ExPad. ExPad is
connected to the exposed flag of the QFN package. For
proper operation, the exposed flag is typically
recommended to be tied to VEE/DUTGND, the negative
supply of the device.
The positive power supply connector is labeled VCC.
Depending on the device, the negative power supply
nomenclature is labeled either GND or VEE. To help avoid
confusion with the use of this board, the negative supply
connector is labeled VEE/DUTGND. SMAGND is the
ground for the SMA connectors and is not to be confused
with the device ground, VEE/DUTGND. SMAGND and
DUTGND can be connected in single-supply applications.
The power pin layout and typical connection of the
evaluation board is shown in Figure 6.
It is recommended to add bypass capacitors to reduce
unwanted noise from the power supplies. Connect 0.1 mF
capacitors from VCC and VEE/DUTGND to SMA_GND.
Output Loading/Termination
ECL/PECL/LVPECL Outputs
Most ECL outputs are open emitter and need to be DC
loaded and AC terminated to VCC −2.0 V via a 50 Wresistor.
If no internal resistors are provided on the device, 0402 chip
resistor pads are provided on the bottom side of the
evaluation board to terminate the ECL driver. Solder the
chip resistors to the bottom side of the board between the
appropriate input device pads and the ground pads. If
internal resistors are provided, the VT pins should be wired
to SMAGND. (More information on termination is provided
in AND8020).
For standard ECL lab setup and test, a split (dual) power
supply is recommended enabling the 50 Winternal
impedance in the oscilloscope, or other measuring
instrument, to be used as an ECL output load/termination.
By offsetting VCC = +2.0 V, SMAGND = VCC −2.0 V,
(SMAGND is the system ground, 0V); VCC is 2.0 V, and
VEE/DUTGND is −3.0 V, −1.3 V or −0.5 V; see Table 2,
Power Supply Levels).
NB7V33MMNGEVB
http://onsemi.com
4
CML Outputs
Likewise, CML outputs need to be terminated to VCC via
a 50 Wresistor. If no internal resistors are provided on the
device, 0402 chip resistor pads are provided on the bottom
side of the evaluation board to terminate the CML driver. If
internal resistors are provided, the VTpins should be wired
to VCC.
For CML lab setup and test, operation with negative
supply voltages is recommended to enable the 50 Winternal
impedance in the oscilloscope, or other measuring
instrument, to be used as a CML output termination; (VCC
= 0 V, SMAGND = 0 V, and VEE/DUTGND = −5.0 V,
−3.3 V, −2.5 V, or −1.8 V).
LVDS Outputs
LVDS outputs are typically terminated with 100 Wacross
the Q/Q output pair. The 100 Wcan be added on the
QFN16EVB, but it is not provided on the board, since there
are several user dependent LVDS output measurement
techniques.
For LVDS lab setup and test, a single supply is typically
used, ie. VCC = 3.3 V and DUTGND = 0 V.
Installing the SMA Connectors
Each configuration indicates the number of SMA
connectors needed to populate an evaluation board for a
given device. Each input and output requires one SMA
connector. Install all the required SMA connectors onto the
board and solder the center signal conductor pin to the board
on J1 through J16. Please note that the alignment of the
signal connector pin of the SMA connector to the metal trace
on the board can influence lab results. The launch and
reflection of the signals are largely influenced by imperfect
alignment and soldering of the SMA connector.
Validating the Assembled Board
After assembling the evaluation board, it is recommended
to perform continuity checks on all soldered areas before
commencing with the evaluation process. Time Domain
Reflectometry (TDR) is another highly recommended
validation test.
NB7V33MMNGEVB
http://onsemi.com
5
NB7V33MMNGEVB ASSEMBLY
Table 1. CONFIGURATION FOR DEVICE: NB7V33M
J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 J12 J13 J14 J15 J16
Device Pin # 1234567891011 12 13 14 15 16
SMA
Connector
Yes Yes Yes Yes No No No No No Yes Yes No No No Yes No
Wire No No No No No GND GND GND VCC No No VCC VCC VCC No VCC
NOTE: DUTGND/VEE = Exposed Pad and must be tied to DUTGND/VEE.
CONFIGURATIONS
SMAGND
SMAGND
VCC
DUTGND/VEE
ExPad
Figure 6. Power Supply Configuration for Device NB7V33M
Bottom View
Top View
DUT
SMAGND
DUTGND/VEE
VCC
Exposed Pad
J1
J16
J2
J3
J11
J10
J4
J5
J6 J7
J8
J9
J12
J13
J15 J14
Install 0.1 mF Decoupling
Capacitors here and at
package pins
Polarity of 22 mF:
+ C4 −+ C2 −
1
2
3
4
12
11
10
9
8765
16151413
NB7V33MMNGEVB
http://onsemi.com
6
NB7V33MMNGEVB TEST
Figure 7. Basic Lab Setup (Typical)
Power Supply
VCC VEE/DUTGND
DUT
Differential
Signal
Generator
Trigger
Out
Out
1. Connect appropriate power supplies to VCC, VEE/DUTGND, SMAGND, and ExPad (see Table 2).
2. Connect a signal generator to the input SMA connectors. Setup input signal 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 Wtermination.
VEE/
DUTGND
Power Supply
GND (0 V)
VCC
Trigger
Test Measuring
Equipment
Channel 1
Channel 2
DUTGND/
VEE
ExPad SMAGND
Table 2. POWER SUPPLY LEVELS
Outputs Power Supply VCC VEE/DUTGND SMAGND ExPad (typ)
CML 2.5 V 0 V −2.5 V 0 V VEE/DUTGND
CML 1.8 V 0 V −1.8 V 0 V VEE/DUTGND
Table 3. NB7xxxM, CML OUTPUTS “SPLIT” POWER
SUPPLY CONFIGURATION
Device Pin Power
Supply Convertor “Spilt” Power Supply
VCC VCC = 0.0 V
SMAGND VTT = 0 V
DUTGND DUTGND = −2.5 V or −1.8 V
Figure 8. “Split” or Dual Power Supply Connections
+2.5 V
Dual Power Supplies
VCC DUTGND
SMAGND
+0.0 V +2.5 V
−+−+
Offset / “Split” Power Supply Configuration
NB7V33MMNGEVB
http://onsemi.com
7
Table 4. BILL OF MATERIALS
Components Manufacturer Description Part Number Qty Web Site
SMA Connector Rosenberger SMA Connector, Side
Launch, Gold Plated
32K243−40ME3 7 http://www.rosenberger.de
http://www.rosenbergerna.com
Surface Mount
Test Points
Keystone* SMT Miniature Test
Point
5015 4 http://www.keyelco.com
Chip Capacitor AVC Corporation* 0603 0.01 mF 10% 06035C103KAT2A na http://www.avxcorp.com
0603 0.1 mF 10% 0603C104KAT2A 2
Chip Resistor Panasonic* 0402 50 W1%
Precision Thick Film
Chip Resistor
ERJ−2RKF49R9X na http://www.panasonic.com
Evaluation Board ON Semiconductor QFN 16 Evaluation
Board
QFN16EVB 1 http://www.onsemi.com
Device Samples ON Semiconductor QFN 16 Package
Device
NB7V33MMNG 1 http://www.onsemi.com
*Components are available through most distributors, i.e. www.newark.com, www.digikey.com
NB7V33MMNGEVB
http://onsemi.com
8
Figure 9. Gerber Files
Top Layer
Second Layer (SMA_GND Plane)
NB7V33MMNGEVB
http://onsemi.com
9
Figure 10. Gerber Files
Third Layer (DUT_GND Trace)
Bottom Layer
NB7V33MMNGEVB
http://onsemi.com
10
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. 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
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USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
EVBUM2187/D
LITERATURE FULFILLMENT:
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Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: [email protected]
ON Semiconductor Website: www.onsemi.com
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