MAX3804EVKIT [MAXIM]
Evaluation Kit for the MAX3804 ; 评估板MAX3804\n
| 型号： | MAX3804EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Evaluation Kit for the MAX3804
|
| 文件： | 总5页 (文件大小：212K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-2821; Rev 0; 4/03
MAX3804 Evaluation Kit
General Description
Features
ꢀ DC-Coupled Evaluation Kit
The MAX3804 DC-coupled evaluation kit (EV kit) simpli-
fies evaluation of the MAX3804 12.5Gbps settable
equalizer. The EV kit enables full testing of the device
functions including all equalization settings. SMA con-
nectors with 50Ω controlled-impedance transmission
lines to the MAX3804 are provided for all CML input
and output ports.
ꢀ SMA Connectors for All High-Speed Inputs and
Outputs
ꢀ Fully Assembled and Tested
Quick Start
Note: The MAXꢀ804 EV kit is a DC-coupled evaluation
board. Care must be taken to ensure that no
direct short between the supply voltage and sup-
ply ground exists. Use external coupling capaci-
tors on the input and output when AC-coupling is
Ordering Information
PART
TEMP RANGE
IC PACKAGE
MAX3804EVKIT
-40°C to +85°C
16 QFN
desired. DC-coupled operation with positive V
CC
supplies normally causes permanent damage to
laboratory test equipment (typical oscilloscope,
BERT). The MAXꢀ804 EV kit must be operated
Component List
from a negative V supply when DC-coupled to
EE
normal laboratory equipment.
DESIGNATION QTY
DESCRIPTION
1) Connect a -ꢀ.ꢀV power supply to TPꢀ (V ).
EE
C1–C5
C6
5
1
4
4
ꢀ
0.1µF 10% ceramic capacitors (0402)
0.1µF 10% ceramic capacitor (060ꢀ)
ꢀꢀµF 10% tantalum capacitors (case-B)
SMA connectors, tab contact
Connect the power-supply ground to TP2 (GND)
and J6 (V ). Install shunts in JP2 and JPꢀ, and
CC
remove shunt from JP1.
C7–C10
J1–J4
2) Install shunts across pins 2 and ꢀ of JPEQ1, JPEQ2,
and JPEQꢀ for minimal equalization (0, 0, 0). See
Table 1 for the relationship between nominal path
loss and FR-4 microstrip path length.
JP1, JP2, JPꢀ
2-pin headers, 0.1in centers
JPEQ1,
JPEQ2, JPEQꢀ
ꢀ
ꢀ-pin headers, 0.1in centers
ꢀ) Apply a differential input signal (400mV
to
P-P
Rꢀ
R4
R5
1
1
1
10kΩ resistor (0402)
12kΩ resistor (0402)
8kΩ resistor (0402)
1200mV ) between SMA connectors J1 and J2
P-P
(SDI+ and SDI-).
4) Attach a differential high-speed oscilloscope with a
50Ω input to SMA connectors Jꢀ and J4 (SDO+ and
SDO-) to observe the output of the equalizer.
GND, V
,
CC
V
, V
,
7
Test points
CC1 CC2
V
, TP4, TP5
EE
U1
1
5
1
1
MAXꢀ804ETE
Table 1. Relationship Between Nominal Path
Loss and FR-4 Microstrip Path Length
None
None
None
Shunts
MAXꢀ804 EV board
MAXꢀ804 data sheet
NOMINAL 6-mil FR-4
JPEQ3 JPEQ2 JPEQ1
MICROSTRIP LENGTH (in)
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
2
6
Component Suppliers
10
14
18
22
26
ꢀ0
SUPPLIER
PHONE
FAX
AVX
80ꢀ-946-0690
847-6ꢀ9-6400
814-2ꢀ7-14ꢀ1
516-54ꢀ-7100
80ꢀ-626-ꢀ12ꢀ
847-6ꢀ9-1469
814-2ꢀ8-0490
516-864-76ꢀ0
Coilcraft
Murata
Zetex
Note: 0 refers to pins 2 and 3 shunted.
1 refers to pins 1 and 2 shunted.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX3804 Evaluation Kit
Adjustment and Control
Descriptions (see Quick Start)
DC-Coupled Operation with
Laboratory Equipment
Connect a +1.85V power supply to J6 (V ). Connect
CC
a -1.65V power supply to TPꢀ (V ). Connect the
EE
COMPONENT NAME
FUNCTION
power-supply ground to TP2 (GND). Install shunts JP2
and JPꢀ. Remove shunt JP1. With this setup the part
can be DC-coupled to external laboratory equipment
(typical oscilloscope, BERT).
Equalizer boost control logic input
ꢁSB
JPEQ1
JPEQ2
JPEQꢀ
EQ1
EQ2 Equalizer boost control logic input
Equalizer boost control logic input
DC-Coupled Operation
EQꢀ
MSB
with Oscilloscopes and BERTs
The MAXꢀ804 is designed with DC-coupled inputs and
outputs, implemented with internal 50Ω terminations to
Alternative Supply Configurations
V
(SDI ) and V
(SDO ). ꢁaboratory oscillo-
CC2
CC1
scopes and BERTs normally terminate their inputs and
outputs with 50Ω to ground. When the MAXꢀ804 V
are connected to a positive supply, a DC path exists
from the power supply to the ports of the oscilloscope
or BERT. This configuration can cause permanent dam-
age to the oscilloscope or BERT.
AC-Coupled Operation with
s
CC
V
= V
= +1.65V
CC1
CC2
CC
) and J5 (V
Connect a +ꢀ.ꢀV power supply to J6 (V ). Connect a
+1.65V power supply to TP1 (V
).
CC2
CC1
Connect the power-supply ground to TP2 (GND).
Remove shunts JP2 and JPꢀ. Install shunt JP1. Use
external AC-coupling for connecting to external labora-
tory equipment (typical oscilloscope, BERT).
When the MAXꢀ804 EV kit is being used with normal
oscilloscopes or BERTs, either external AC-coupling
must be provided or V
and V
must be connected
EE
CC1
CC2
to ground (i.e., using a negative V supply). Failure to
do so may permanently damage laboratory equipment.
C5
0.1µF
V
CC
V
EE
16
15
14
13
V
V
CC2
C1
C3
CCI
TP5
0.1µF
0.1µF
V
CC2
J5
CC2
1
2
3
12
V
V
CC2
V
V
EE
EE
CC1
V
J1
SDI+
J4
JP3
C7
33µF
U1
MAX3804
SDO+
11
10
9
SDO+
SDO-
TP4
SDI+
SDI-
J2
SDI-
J3
SDO-
V
CC
J6
CC
V
V
V
CC2
CCI
C10
33µF
4
V
V
CC2
V
EE
V
V
EE
EE
TP3
EE
CC1
V
V
C2
C4
0.1µF
CC
0.1µF
C9
33µF
C8
33µF
C6
0.1µF
JP1
5
6
7
8
R3
TP2
GND
10kΩ
V
EE
V
CC1
TP1
CC1
V
R4
12kΩ
JP2
R5
8kΩ
TP8
TP9 TP10
V
EE
Figure 1. MAX3804 Schematic Diagram
_______________________________________________________________________________________
2
MAX3804 Evaluation Kit
1.0"
1.0"
Figure 2. MAX3804 Component Placement Guide
Figure 3. MAX3804 PC Board Layout—Component Side
_______________________________________________________________________________________
3
MAX3804 Evaluation Kit
1.0"
1.0"
Figure 4. MAX3804 PC Board Layout—Ground Plane
Figure 5. MAX3804 PC Board Layout—Power Plane
4
_______________________________________________________________________________________
MAX3804 Evaluation Kit
1.0"
Figure 6. MAX3804 PC Board Layout—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 5
© 200ꢀ Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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