MAX3941EVKIT Maxim Integrated, MAX3941EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX3941EVKIT
• Description: Buffers & Line Drivers Evaluation Kit for the MAX3941
• Manufacturer: Maxim Integrated

Specifications of MAX3941EVKIT

• Number Of Input Lines: /
• Supply Voltage - Max: - 4.9 V
• Supply Voltage - Min: - 5.5 V
• Data Rate: 10.7 Gbps
• Supply Current: 140 mA

MAX3941 Evaluation Kit
_____________________________________________________________________ Quick Start
_______________________________________ Adjustments and Control Descriptions
2
1) If the data is to be latched, place shunt on JP7 (RTEN)
2) Install a jumper on JP2.
3) Install a jumper on the right side of JP3. This allows
4) Install a jumper on the left side of JP5. This allows
5) To use the pulse-width control (PWC) install a jumper
6) Ensure that a jumper is not installed on JP6 (MODEN)
7) Connect a differential signal source to J1 (DATA+)
8) If the latch is enabled, apply a differential clock signal
__________________________________________________________________________________________________
COMPONENT
to enable the clock inputs. Otherwise, leave it open.
adjustment of MODSET using R3.
adjustment of BIASSET.
on the lower two pins of JP1. To disable PWC place a
jumper on the top two pins of JP1.
and enable modulation.
and J2 (DATA-). Refer to the MAX3941 data sheet to
determine voltage levels.
to J3 (CLK+) and J4 (CLK-). Refer to the MAX3941
data sheet to determine voltage levels.
JP1
JP3
JP4
JP5
JP6
JP7
R1
R3
R5
MODSET
BIASSET
R
R
MODEN
NAME
PLRT
RTEN
PWC
R
MODSET
BIASSET
PWC
This jumper enables/disables the pulse-width-control circuitry. Place a shunt on
the top two pins to disable the PWC circuitry. Place a shunt on the bottom two pins
to enable the PWC circuitry.
Place a jumper on the right-hand side of this jumper to connect the R
potentiometer to the MAX3941. Place a jumper on the left-hand side of this jumper
to connect the MODSET pin to the SMB connector for AC testing.
Enables/disables the polarity inversion function. Shunt to invert the polarity of the
output data. Shunting this jumper shorts the PLRT pin to V
normal operation.
Place a jumper on the left-hand side of this jumper to connect the R
potentiometer to the MAX3941. Place a jumper on the right-hand side of this
jumper to connect the BIASSET pin to the SMB connector for AC testing.
Enables/disables modulation output. Shunt to disable switching of the data output.
When shunted, the output goes to the absorbtive (logic 0) state. Remove shunt to
enable modulation.
Enables/disables data retiming. Shunt to enable data retiming. Remove shunt for
direct data transmission.
Adjusts the EAM pulse width. Turn the potentiometer screw counter-clockwise to
increase the logic 1 width.
Adjusts the EAM modulation current. Turn the potentiometer screw clockwise to
increase the modulation amplitude (decrease the resistance of MODSET to GND).
Adjusts the EAM bias current. Turn the potentiometer screw clockwise to increase
bias current (decrease the resistance from BIASSET to GND).
9)
10) A high-quality SMA attenuator (14dB or 20dB) is
11) Attach a -5.2V power supply to J10 (GND) and J11
12) Adjust R3 until the desired modulation swing is
13) Adjust R5 until the desired bias voltage is achieved.
14) Adjust R1 until the desired pulse width is achieved (if
15) If desired, place a shunt on JP4 (PLRT) to invert the
Connect a high-bandwidth oscilloscope, such as the
Tektronix CSA8000 with the 80E01 sampling head, to
J7 (OUT).
required to reduce the signal level for compatibility
with the most sampling heads. The attenuator should
be connected directly to the output SMA connector on
the EV kit to minimize transmission line reflections.
(V
the board.
achieved.
PWC is enabled, see step 5).
output data polarity.
EE
). Set the current limit to 300mA and power up
FUNCTION
EE
. Leave open for
BIASSET
MODSET