MAX3983EVKIT [MAXIM]
Evaluation Kit for the MAX3983 ; 评估板MAX3983\n
| 型号： | MAX3983EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Evaluation Kit for the MAX3983
|
| 文件： | 总10页 (文件大小：524K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-2968; Rev 0, 8/03
MAX3983 Evaluation Kit
_________________________ Features
________________General Description
The MAX3983 evaluation kit (EV Kit) is an assembled
demonstration board that provides electrical evaluation of
the MAX3983 Quad Copper Cable Signal Conditioner.
The EV Kit also includes a calibration strip for accurate
measurements.
♦
♦
♦
Fully Assembled and Tested
Easy Selection of Operating Modes
Equipped with a 4X InfiniBand Cable Connector
____________________ Component List
______________ Ordering Information
PART
MAX3983EVKIT
TEMP. RANGE IC PACKAGE
0°C to +85°C 68 QFN
DESIGNATION QTY
DESCRIPTION
C1-C32, C35-
0.01µF ±5% ceramic
42
C44
capacitors (0402)
C33
1
4
33µF tantalum capacitor
______________Component Suppliers
C34, C45, C46,
0.1µF ±5% ceramic
SUPPLIER
AVX
Coilcraft
Digi-Key
Murata
PHONE
FAX
C49
capacitors (0402)
843-448-9411
847-639-6400
218-681-6674
770-436-1300
843-448-1943
847-639-1469
218-681-3380
770-436-3030
C47, C48, C50,
C51
4
Not Installed
SMA connectors, edge
mount
J1-J18
18
JP1, JP2, JP8,
JP9, JP12
5
1
1
2-pin headers, 0.1in centers
3-pin header, 0.1in centers
Note: Please indicate that you are using the MAX3983
when ordering from these suppliers.
JP3
3-pin + 1-pin header, 0.1in
JP5
centers
________________________ Quick Start
JP10, JP11
L1
2
1
Not Installed
1) Connect a +3.3V supply to the 3.3V terminal and
4.7µH Inductor Coilcraft
ground to the GND terminal.
DS1608C-472
2) Disable system loopback by installing the
LOOPBACK shunt at jumper JP9.
4x IB Connector FCI 58369-
P1
1
111120 or 58369-112110
3) Remove shunts at jumpers JP3 and JP5 to enable
TX and RX.
R1-R8
R10 - R18
8
9
4.7kΩ ±5% resistors (0402)
Not Installed
4) Install shunt at jumper JP2 to VCC to provide +3.3V to
the SD pullup resistors.
Test points
TP1-TP11
11
Digi-Key 5000K-ND
5) Apply 2.5Gbps to 3.2Gbps data to TX_IN[1:4]
(J9 - J16).
U1
U2
1
1
MAX3983UGK 68-QFN*
OR Gate Fairchild
6) Apply 2.5Gbps to 3.2Gbps data to RX_IN[1:4]
through a 1m to 5m InfiniBand 4X cable assembly.
NC7S32P5X SC70
MAX3983 evaluation circuit
board, rev A
MAX3983 data sheet
None
None
7) Connect data outputs RX_OUT[1:4] to a 50 ohm-
terminated oscilloscope to monitor RX_IN[1:4] data,
and/or connect TX_OUT[1:4] to a 50 ohm-terminated
oscilloscope through a 1m to 15m InfiniBand 4X
cable assembly to monitor TX_IN[1:4] data.
*Note: U1 has an exposed pad which requires it to be
solder attached to the circuit board to insure proper
functionality of the part.
8) Adjust TX pre-emphasis with jumpers JP1 and JP12,
and adjust RX pre-emphasis with JP8 (see Jumper
Descriptions).
_________________________________________________________________Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 1-800-835-8769
MAX3983 Evaluation Kit
__________________________________________________________________ _Jumper Descriptions
SHUNT
NAME
TYPE
DESCRIPTION
POSITION
OPEN
SHUNT (GND)
OPEN
SHUNT (GND)
OPEN
SHUNT (GND)
OPEN
Enables most-significant bit of TX pre-emphasis control
Disables most-significant bit of TX pre-emphasis control
Enables least-significant bit of TX pre-emphasis control
Disables least-significant bit of TX pre-emphasis control
Sets RX pre-emphasis to 6dB
Sets RX pre-emphasis to 3dB
Enables loopback from TX_IN[1:4] to RX_OUT[1:4]
Disables loopback
TX_PE1
(JP1)
2-pin header
TX_PE0
(JP12)
2-pin header
RX_PE (JP8) 2-pin header
LOOPBACK
2-pin header
(JP9)
SHUNT (GND)
Allows external voltage (3.0V to 5.5V) applied at VPULLUP pin as SD
OPEN
PULLUP
2-pin header
(JP2)
resistor pullup voltage
SHUNT (VCC
)
Sets Vcc as the SD resistor pullup voltage
Enables the TX section of the MAX3983
OPEN
Enables auto-detection in the TX section, when EV board is set up
in the Auto-Detect configuration. See Auto-Detect Configuration in
Detailed Description.
TX_ENABLE
3-pin header
(JP3)
TX_AUTO_EN
TX_DISABLE
OPEN
Disables the TX section of the MAX3983
Enables the RX section of the MAX3983
Enables auto-detection in the RX section when EV board is set up
in the Auto-Detect configuration. See Auto-Detect Configuration in
Detailed Description.
RX_AUTO_EN
RX_DISABLE
RX_ENABLE
(JP5)
3-pin +
1-pin header
Disables the RX section of the MAX3983
Sets RX_ENABLE high whenever LOOPBACK or all of RX_SD[1:4]
are high when EV board is set up in the Auto-Detect configuration.
See Auto-Detect Configuration in Detailed Description.
_______________Detailed Description
Embedded Stripline
The MAX3983 Evaluation Kit has approximately 2.5
inches of 4mil-wide FR4 stripline on the cable side
inputs and outputs. This provides 2dB of loss at 3GHz,
which slows the output transition times of the MAX3983
to approximately 60ps.
Auto-Detect Configuration
The MAX3983 Evaluation Kit is shipped with each
signal detect (SD) separated. In order for the MAX3983
to automatically detect an incoming signal and enable
the corresponding output, these SD outputs need to be
connected together.
If slower transition times are desired, the MAX3983
Evaluation Kit provides a connection for 0402
capacitors across the TX outputs. To achieve about
100ps (20%-80%) edges, solder 1.5pF capacitors for
C47, C48, C50, and C51.
To configure the board for auto-detection on the RX
side, solder four 0Ω 0402 resistors in R14 - R17 and
remove R6, R7, and R8. Jumper JP5 then enables RX
auto-detect (see Jumper Descriptions).
To configure the board for auto-detection on the TX
side, solder four 0Ω 0402 resistors in R10 - R13 and
remove R2, R3, and R4. Jumper JP3 then enables TX
auto-detect (see Jumper Descriptions).
2 _________________________________________________________________________________________
MAX3983 Evaluation Kit
E L B A N E _ R X
P O R
P _ E X 1 T
3 4
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
6 0
6 1
6 2
6 3
6 4
6 5
6 6
6 7
6 8
P _ E X 0 T
3 3
C V C 4
C V C 2
3 2
4 T + U _ O X R
4 - T
4 T + U _ O X T
C V C 2
_ O X T
3 T + U _ O X T
C V C 2
_ O X T
2 T + U _ O X T
C V C 2
_ O X T
1 T + U _ O X T
C V C 2
U _ O X T
3 1
3 0
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
4 - T
U
_ O X R
C V C 4
3 T + U _ O X R
3 - T _ O X R
C V C 4
2 T + U _ O X R
2 - T _ O X R
C V C 4
1 T + U _ O X R
1 - T _ O X R
C V C 4
3 - T
U
U
2 - T
U
U
1 - T
U
U
E P _ R X
K C
C . N .
O L O P B A
E L B A N E _ T X
Figure 1. MAX3983 EV Kit Schematic
_________________________________________________________________________________________
3
MAX3983 Evaluation Kit
Figure 2. MAX3983 EV Kit Component Placement Guide – Component Side
4 _________________________________________________________________________________________
MAX3983 Evaluation Kit
Figure 3. MAX3983 EV Kit PC Board Layout – Component Side (Signal), Layer 1
_________________________________________________________________________________________
5
MAX3983 Evaluation Kit
Figure 4. MAX3983 EV Kit PC Board Layout – Ground Plane, Layer 2
6 _________________________________________________________________________________________
MAX3983 Evaluation Kit
Figure 5. MAX3983 EV Kit PC Board Layout – Signal, Layer 3
_________________________________________________________________________________________
7
MAX3983 Evaluation Kit
Figure 6. MAX3983 EV Kit PC Board Layout – Ground Plane, Layer 4
8 _________________________________________________________________________________________
MAX3983 Evaluation Kit
Figure 7. MAX3983 EV Kit PC Board Layout – Power Plane, Layer 5
_________________________________________________________________________________________
9
MAX3983 Evaluation Kit
Figure 8. MAX3983 EV Kit PC Board Layout – Bottom (Signal), Layer 6
Maxim makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Maxim 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 consequential
or incidental damages. “Typical” parameters can and do vary in different applications. All operation parameters, including “typicals” must be validated for
each customer application by customer’s technical experts. Maxim 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
Maxim product could create a situation where personal injury or death may occur.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
2000 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products
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