19-0142; Rev 0, 4/14/2005
MAX3967A Evaluation Kit
______________
General Description
The MAX3967A evaluation kit (EV kit) is an assembled
demonstration board that provides complete electrical or
optical evaluation of the MAX3967A.
________________________
Features
Evaluates: MAX3967A
Fully Assembled and Tested
Single +3.3V Power Supply Operation
AC-Coupling Provided On-Board
__________________ Component List
DESIGNATION
C1
C2
C4, C7, C8
C5, C6,
C9, C11
D1
J1 – J4
JU1, JU2, JU9
JU3, JU4, JU5,
JU7, JU8
L1
L2
Q1
R1
R2
R3, R4
R5
R6
R7
R8, R9
R10, R12
R11
R13
TP1-3, TP7
Allows Electrical or Optical Evaluation
QTY
1
1
3
4
1
4
3
5
1
1
1
1
1
2
1
1
1
2
2
1
1
4
1
8
1
DESCRIPTION
10µF
±10%
tantalum
capacitor (B case)
0.1µF
±5%
ceramic
capacitor (0603)
0.01µF
±5%
ceramic
capacitors (0603)
0.22F
±5%
ceramic
capacitors (0603)
LED, user supplied
SMA side mount
connectors, tab contact
3-pin headers, 0.1in centers
2-pin headers, 0.1in centers
1µH inductor
1008CS-102xjb
Ferrite bead (0603)
Murata BLM18PG300SN1
Zetex FMMT591A PNP
transistor (SOT-23)
100kΩ variable resistor
BOURNS 3296W-1-104
DIGI-KEY3296W-1-104-ND
4.99Ω
±1%
resistor (0603)
453Ω resistors (0603)
1.0kΩ
±1%
resistor (0603)
698Ω
±1%
resistor (0603)
5kΩ variable resistor
DIGI-KEY3296W-1-502-ND
82.5Ω
±1%
resistors (0603)
121Ω
±1%
resistors (0603)
49.9Ω
±1%
resistor (0603)
20.0kΩ
±1%
resistor (0603)
Test pointsDIGI-KEY 5000K-ND
_____________Ordering
Information
PART
MAX3967AEVKIT
TEMP
RANGE
-40°C to +85°
C
IC-PACKAGE
24 Thin QFN
_____________
Component Suppliers
SUPPLIER
AVX
Coilcraft
Murata
Zetex
PHONE
803-946-0690
847-639-6400
814-237-1431
516-543-7100
FAX
803-626-3123
847-639-1469
814-238-0490
516-864-7630
Note:
Please indicate that you are using the MAX3967A when
contacting these component suppliers.
_______________________
QuickStart
Electrical Evaluation
For electrical evaluation of the MAX3967A, configure the
evaluation kit as follows:
1)
2)
Remove all jumpers if there are any. Then reinstall
JU3 and JU4.
To enable the output, connect TX_DISABLE to GND
by placing a shunt on the right side of JU9, or leave
JU9 open.
Connect an oscilloscope to JU1 and JU2 (OUT+ and
OUT-) using 50Ω cables and 50Ω oscilloscope
terminations.
Using a multimeter on the right side of JU8 and
ground, adjust the potentiometer R7 to be 300Ω.
Attach MODSET to the potentiometer by placing a
jumper on JU8.
Install a shunt on jumper the right side of JU1
(TCNOM). See Figure 7 for jumper table.
3)
4)
U1
None
None
MAX3967AETG
Shunts DIGIKEY 9000-ND
MAX3967A EV board, rev B
5)
__________________________________________
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.
MAX3967A Evaluation Kit
Evaluates: MAX3967A
6)
Apply a differential signal to J4 (IN+) and J3 (IN-) with
1V differential signal amplitude and 100Mbps data
rate.
Adjust the oscilloscope vertical gain of both channels
to 10mV/div. Set the oscilloscope to display the
differential signal [(OUT+) - (OUT-)].
Attach a 3.3V power source to the V
CC
and GND
terminals (J6 and J10). Set the current limit to
300mA.
Place an ammeter across JU7 to measure the I
MON
current.
3)
Solder LED onto socket D1, see the Figure 1 for
socket layout. Connect the anode to OUT- and the
cathode to OUT+.
Attach MODSET to the potentiometer by placing a
jumper on JU8.
Install a shunt on jumper the right side of JU1 to set
the tempco to “nominal” (TC connected to TCNOM).
Connect output of LED to an optical-to-electrical (O-
to-E) converter and connect the output of the O-to-E
to an oscilloscope.
Apply a differential signal to J4 (IN+) and J3 (IN-) with
1V differential signal amplitude and 100Mbps data
rate.
Attach a 3.3V power source to the V
CC
and GND
terminals (J6 and J10). Set the current limit to
300mA.
To enable the output, connect TX_DISABLE to GND
by placing a shunt on the right side of JU9, or leave
JU9 open.
7)
4)
5)
6)
8)
9)
7)
10) The output signal is approximately 40mV
p-p
. Adjust
R7 to vary the level of the signal.
Optical Evaluation
For optical evaluation of the MAX3967A, configure the
evaluation kit as follows:
1)
2)
Remove resistor R2 from the evaluation kit.
Disconnect cables from J1 (OUT+) and J2 (OUT-).
8)
9)
Table 1. Adjustment and Control Descriptions (see Quick Start first)
COMPONENT
D1
NAME
LED
FUNCTION
D1 is a socket for an LED in a TO-46 header. Remove R2 before
inserting an LED into socket D1.
JU1 connects TC to either TCNOM or TCMIN. Place a jumper on the
right two pins to connect TC to TCNOM. Place a jumper on the left
two pins to connect TC to the jumper JU2.
JU1 must have the left two pins shorted in order for JU2 to be
operable. JU2 will connect TC directly to TCMIN when the right two
pins are shorted or connect TC to TCMIN through R1 when the left
two pins are shorted.
Shorting JU3 connects PB1 to ground. See MAX3967A data sheet,
table 1.
Shorting JU4 connects PB2 to ground. See MAX3967A data sheet,
table 1.
Shorting JU5 connects PB3 to ground. See MAX3967A data sheet,
table 1.
JU7 connect MON to ground through a 1kΩ resistor.
Place a jumper on JU8 to connect MODSET to potentiometer R7.
Enables/disables the output modulation. Shunt across the left two
pins of JU9 to force a static zero at the outputs. TX_DISABLE has an
internal pull down resistor to enable the part when this pin is left open.
When the left two pins of JU1 and JU2 have been shorted this
potentiometer is used to set the tempco of the modulation current.
When JU8 is shunted, R7 allows adjustment of the LED modulation-
current amplitude.
JU1
TCNOM
JU2
TCMIN
JU3
JU4
JU5
JU7
JU8
JU9
PB1
PB2
PB3
MON
MODSET
TX_DISABLE
R1
R7
R
TC
R
MODSET
2
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