19-1954; Rev 1; 5/02
MAX3800 Evaluation Kits
General Description
The MAX3800 evaluation kits (EV kits) simplify evalua-
tion of the MAX3800 adaptive equalizer and cable dri-
ver. The EV kits enable testing of all the device’s func-
tions. SMA connectors with 50Ω controlled-impedance
transmission lines to the MAX3800 are provided for all
input and output ports.
Features
o
SMA Connectors for All High-Speed Inputs and
Outputs
o
Fully Assembled and Tested
o
Includes Potentiometer for Adjusting Driver
Output Amplitude
Evaluate: MAX3800
Component List
DESIGNATION
C1–C10,
C13–C18,
C21–25
QTY
21
DESCRIPTION
0.1µF ±10% ceramic capacitors
(0603)
Murata GRM39X7R104K016A
10µF ±10% tantalum capacitors
C case
AVX TAJC106K010
SMA edge-mount connectors
EFJohnson 142-0701-801 or
Digi-Key J502-ND
Note:
Cut center pin to
approximately 1/16in length.
Test points
Digi-Key 5000K-ND
2-pin header, 0.1in centers
Digi-Key S1012-36-ND
Shunt
Digi-Key S9000-ND
100kΩ ±5% resistors (0603)
20kΩ variable resistor
Bourns, Digi-Key 3296W-203-ND
Test points
Digi-Key 5000K-ND
MAX3800UHJ (32-pin TQFP-EP)
MAX3800UGJ (32-pin QFN)
MAX3800 evaluation kit, rev B
circuit board
MAX3800 data sheet
MAX3800 EV kit data sheet
PART
MAX3800EVKIT
MAX3800UGJ-KIT
Ordering Information
TEMP RANGE
0°C to +85°C
0°C to +85°C
IC PACKAGE
32 TQFP-EP
32 QFN
C11, C12
2
Component Suppliers
SUPPLIER
AVX
Digi-Key
EFJohnson
Murata
PHONE
843-444-2863
218-681-6674
402-474-4800
415-964-6321
FAX
843-626-3123
218-681-3380
402-474-4858
415-964-8165
J1–J8
8
J9, J10, J11
JU1
JU1
R1, R2, R3
R4
TP1–TP7
U1*
U1*
None
None
None
3
1
1
3
1
7
1
1
1
1
1
Note:
Please indicate that you are using the MAX3800 when
contacting these component suppliers.
Quick Start
1) Connect a +3.3V power supply to J9 (VCCE) and
J11 (VCCD). Connect the power-supply ground to
J10. (Note: Placing a shunt on JU1 connects VCCE
and VCCD.)
Cable Driver
2) Connect a differential input signal (700mV differen-
tial voltage amplitude) to the cable driver input at
SMA edge connectors J5 and J6.
3) Connect a 50Ω oscilloscope to SMA output connec-
tors J7 and J8 to observe the output of the cable
driver.
4) Potentiometer R4 (R
MOD
) can be adjusted to
change the cable driver output amplitude.
Adaptive Cable Equalizer
5) Connect a differential input signal (700mV differen-
tial voltage amplitude) to a cable. Connect the other
end of the cable to the cable equalizer inputs at
SMA edge connectors J1 and J2.
*The
MAX3800UHJ is included with the MAX3800EVKIT. The
MAX3800UGJ is included in the MAX3800UGJ-KIT.
________________________________________________________________
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.
MAX3800 Evaluation Kits
Evaluate: MAX3800
VCCE
J9
TP5
J10
VCCD
C11
10µF
TP5
JU1
SMA
J8
SMA
J7
TP7
J11
C12
10µF
VCCD
C25
0.1µF
C10
0.1µF
VCCD
C24
0.1µF
TP4
VCCD
C9
0.1µF
C23
0.1µF
24
23
VCCD
C8
0.1µF
C22
0.1µF
C21
0.1µF
VCCD
19
V
CCE
V
CCD
C7
0.1µF
J5
SMA
TP3
18
J6
SMA
R4
20kΩ
C14
0.1µF
RMOD
VCCE
1
V
CCE
C13
0.1µF
VCCE
C1
0.1µF
J1
SMA
J2
SMA
VCCE
C4
0.1µF
6
C3
0.1µF
5
C2
0.1µF
3
2
GND
32
V
CCD
31
GND
30
V
CCD
29
DOUT-
28
DOUT+
27
V
CCD
26
GND
25
GND
GND
22
V
CCD
V
CCE
DIN-
4
EIN+
21
U1
DIN+
20
EIN-
MAX3800
7
8
GND
LOS
EOUT+
EOUT-
CIM+
V
CCE
GND
V
CCE
GND
9
TP1
10
11 VCCE 12
13
VCCE 14
15
16
N.C.
R1
100kΩ
C15
0.1µF
TP2
C5
0.1µF
C17
0.1µF
C18
0.1µF
C6
0.1µF
R2
100kΩ
C16
0.1µF
J3
SMA
J4
SMA
Figure 1. MAX3800 Schematic
6) Connect a 50Ω oscilloscope to SMA edge connec-
tors J3 and J4 to observe the output of the cable
equalizer.
7) The cable integrity monitor (CIM) outputs can be
monitored at TP1 (CIM-) and TP2 (CIM+).
2
8) The loss-of-signal (LOS) output can be monitored at TP3.
_______________________________________________________________________________________
N.C.
CIM-
N.C.
17
N.C.
R3
100kΩ
1.0"
Figure 10. MAX3800UGJ EV Kit PC Board Layout—Power
Plane
1.0"
Figure 11. MAX3800UGJ EV Kit 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
© 2002 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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