Evaluation Board User Guide
UG-133
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Differential Receiver Evaluation Boards for Amplifiers
Offered in 8-Lead SOIC and MSOP Packages
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS. Rev. B | Page 1 of 8
INTRODUCTION
The Analog Devices, Inc., differential receiver evaluation boards
(for the MSOP and SOIC) make it easy for designers to quickly
assess the performance of a particular differential receiver
application circuit. The evaluation board is a bare board (that
is, there are no components soldered to the board) that is very
flexible and allows for several feedback configurations, common-
mode and differential input terminations, reference voltage
applications, and other circuit features. Most resistors and
capacitors on the board are in 1206 packages.
DEVICES COVERED
The boards are used for the AD8129 and AD8130.
POWER SUPPLIES
Power is applied to the boards through J1, a Molex 0022112032
3-pin header. Pin 1 (square footprint) is for the positive supply,
Pin 3 is for the negative supply, and Pin 2 is connected to the
ground plane of the board. Alternatively, looped test points can
be used: TP6 connects to the positive supply, TP7 connects to
the negative supply, and TP8, TP9, TP10, and TP11 connect to
the ground plane (see Figure 1).
The board can accommodate single and dual supplies. For
single-supply operation, connect the negative supply to the
ground plane.
It is very important that the power supply pins of the device under
test (DUT) have decoupling circuitry. The board layout facilitates
such decoupling by including footprints for a 1206 ceramic
capacitor on each supply. For broadband decoupling, it is recom-
mended that two ceramic capacitors be used: one for lower
frequencies and one for higher frequencies. To use two capacitors
on each supply, stack two 1206 ceramic capacitors on the same
footprint. Bulk decoupling is provided by C1 and C3; 10 µF
tantalum capacitors are recommended.
FEEDBACK NETWORKS AND INPUT/OUTPUT
TERMINATIONS
Figure 1 shows the schematic for the evaluation boards. R5 and
R6 compose the resistive feedback loop that can be returned to
ground through R8 or to the reference voltage circuitry, VR1
and C7. Capacitor C5 and Capacitor C6 are included across the
feedback resistor and gain resistor, respectively, to implement
first-order frequency response shaping. C6 introduces a pole
into the feedback loop, which must be compensated for by C5.
A reference voltage can be injected at Pin 4 of the DUT. Using
Potentiometer VR1, which spans the power supplies, the designer
can adjust the reference voltage over a wide range. C7 provides
bypassing on the wiper of VR1. A test point, TP5, is provided
for monitoring the reference voltage. When VR1 is used, it is
important to ensure that JU3 is shorted.
To minimize parasitic summing node capacitance, the ground
plane has been voided under and around Pin 5 of the DUT and
the copper that connects to it.
Differential termination is provided by R3, and common-
mode terminations are provided by R1 and R2. C9 and C10
allow optional input ac coupling and must be shorted across
when not used. JU1 provides the means to directly monitor the
differential input by using a suitable high impedance differential
probe, or to directly short across the differential inputs for test
purposes. Standard 0.100-inch pitch headers can be used in JU1.
Alternatively, TP2 and TP3, which accommodate looped-type
test points, can be used.
A source termination resistor, R7, is included on the output to
facilitate driving coaxial cables and test equipment. The output
signal can be monitored before the source termination resistor
at TP4. Because TP4 is the direct amplifier output, any test
equipment connected to TP4 adds to the capacitive load of the
amplifier, thus diminishing the phase margin. Extreme care
should be exercised when connecting test equipment to TP4.
INPUT/OUTPUT CONNECTORS
The inputs and outputs have edge-mounted Subminiature A (SMA)
connectors for straightforward connection to coaxial cables.
Johnson Components Part Number 142-0701-801, or the
equivalent, is recommended. On the inputs, TP13 and TP14
provide the option of using straight or right-angle through-hole
SMA connectors.
POWER-DOWN
Pull-up Resistor R4 and Jumper JU2 make it easy for the power-
down feature of the DUT to be asserted. The recommended
value for R4 is 1 kΩ. As with JU1, a 0.100-inch pitch header can
be used for JU2.
OTHER COMPONENTS
There may be application circuits where footprints for desired
components are not available on the board. In these cases, the
user is encouraged to use his or her ingenuity to find ways to
include them.
UG-133 Evaluation Board User Guide
Rev. B | Page 2 of 8
TABLE OF CONTENTS
Introduction ...................................................................................... 1
Devices Covered ............................................................................... 1
Power Supplies .................................................................................. 1
Feedback Networks and Input/Output Terminations ................. 1
Input/Output Connectors................................................................ 1
Power-Down...................................................................................... 1
Other Components ........................................................................... 1
Revision History ................................................................................2
Evaluation Board Schematic and Artwork .....................................3
SOIC Evaluation Boards (R) ........................................................4
MSOP Evaluation Boards (RM) ..................................................5
Ordering Information .......................................................................6
Bill of Materials ..............................................................................6
Related Links ..................................................................................6
REVISION HISTORY
9/12—Rev. 0 to Rev. A
Changes to Introduction Section .................................................... 1
Changes to Figure 2 to Figure 7 ...................................................... 4
Changes to Figure 9 .......................................................................... 5
4/10—Revision 0: Initial Version
Evaluation Board User Guide UG-133
Rev. B | Page 3 of 8
EVALUATION BOARD SCHEMATIC AND ARTWORK
AD8129/
AD8130
C2
0.1µF
C1
10µF
16V
–IN
+IN
8
1
3
2
4
5
6
OUT
FB
REF
C4
0.1µF
C3
10µF
16V
V–
V+
TP4
OUT TP12
R7* J4
R8*
R6* C6*
R5* C5*
REF
JU3
C7
0.1µF V–
V+
VR1
1kΩ
V+
R4
1kΩ
JU2
TP8 TP10
TP9 TP11
TP6
V–
V+
TP7
J1
13
2
JU1
R3*
R1*
R2*
J5 1
32
J2
J3
TP13
TP14
TP2
–IN
TP3
+IN
C9*
C10* PD
–V
S
+V
S
TP5
7
CW
08992-013
*USER- DE FINE D V ALUE.
Figure 1. Differential Receiver Evaluation Board Schematic
UG-133 Evaluation Board User Guide
Rev. B | Page 4 of 8
SOIC EVALUATION BOARDS (R)
08992-001
NOTES
1. THE EV ALUAT IO N BOARD SILKS CRE E N P ART NUMBE R LABELL ING ON
YO UR BOARD MAY BE DIF FERE NT F ROM W HAT I S S HOW N HE RE .
Figure 2. Evaluation Board Photo, Component Side
08992-005
Figure 3. Assembly Drawing, Component Side
08992-003
Figure 4. Board Layout Pattern, Component Side
NOTES
1. THE EV ALUAT IO N BOARD SILKS CRE E N P ART NUMBE R LABELL ING ON
YO UR BOARD MAY BE DIF FERE NT F ROM W HAT I S S HOW N HE RE .
08992-002
Figure 5. Evaluation Board Photo, Circuit Side
Figure 6. Assembly Drawing, Circuit Side
08992-004
Figure 7. Board Layout Pattern, Circuit Side
Evaluation Board User Guide UG-133
Rev. B | Page 5 of 8
MSOP EVALUATION BOARDS (RM)
NOTES
1. THE EV ALUAT IO N BOARD SILKS CRE E N P ART NUMBE R
LABE LLING ON YOUR BO ARD M AY BE DIFFERE NT F ROM
WHAT IS S HOW N HE RE .
08992-007
Figure 8. Evaluation Board Photo, Component Side
08992-009
Figure 9. Assembly Drawing, Component Side
08992-011
Figure 10. Board Layout Pattern, Component Side
NOTES
1. THE EV ALUAT IO N BOARD SILKS CRE E N P ART NUMBE R
LABE LLING ON YOUR BO ARD M AY BE DIFFERE NT F ROM
WHAT IS S HOW N HE RE .
08992-008
Figure 11. Evaluation Board Photo, Circuit Side
08992-010
Figure 12. Assembly Drawing, Circuit Side
08992-012
Figure 13. Board Layout Pattern, Circuit Side
UG-133 Evaluation Board User Guide
Rev. B | Page 6 of 8
ORDERING INFORMATION
BILL OF MATERIALS
Table 1.
Quantity Reference Designator Description Package
1 U1 Amplifier 8-lead SOIC, 8-lead MSOP
2 C1, C3 10 µF, capacitor 7343 (SOIC), 3216 (MSOP)
3 C2, C4, C7 0.1 µF capacitor 1206
4 C5, C6, C9, C10 User-defined values capacitor 1206
2 J1, J5 3-pin Molex PWR_CONN_6-9-2
7 R1, R2, R3, R5, R6, R7, R8 User-defined values resistor 1206
1 R4 1 kΩ resistor 1206
1 VR1 1 kΩ resistor 3299W
3 JU1, JU2, JU3 Jumper BERG2
10
TP2 to TP11
Test point
TP1
3 J2, J3, J4, SMA surface-mount technology (SMT) SMASMT
3 TP12, TP13, TP14 SMA connector SMACON
RELATED LINKS
Resource Description
AD8129 Product Page, AD8129 Low Cost 200 MHz Differential Receiver Amplifier
AD8130 Product Page, AD8130 Low Cost 270 MHz Differential Receiver Amplifier
Evaluation Board User Guide UG-133
Rev. B | Page 7 of 8
NOTES
UG-133 Evaluation Board User Guide
Rev. B | Page 8 of 8
NOTES
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions
set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you
have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,
temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term
“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including
ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any
occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.
Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO
WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED
TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE
LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF
THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable
United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in acco
rdance with the substantive laws of the Commonwealth of
Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby
submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.
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UG08992-0-9/12(B)