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19-0018; Rev A, 07/04

Fully Assembled and Tested
Coilcraft Digi-Key EF Johnson Murata
847-639-6400 218-681-6674 402-474-4800 415-964-6321
847-639-1469 218-681-3380 402-474-4858 415-964-8165
C4, C5, C10, C14, C16, C17, C33, C34, C39 C6, C35 C15 C28 C29 J1-J3, J15, J16, J18 J6, J10, TP3, TP7, TP13 JU1, JU4, JU5 L2 R1 R2 R3 R4, R5 R6 R11 R22 R23 U1, U2 None None
9 2 1 1 1 6 5 3 1 1 1 1 2 1 1 1 1 2 3 1
0.1F 10% Ceramic Capacitors (0402) 10pF 10% Ceramic Capacitors (0402) 10F 5% Tantalum Capacitor (B Case) 2pF 10% Ceramic Capacitor (0402) Open SMA connectors (edge-mount, tab contact) Test Points 2-pin headers, 0.1in centers 1H 5% inductor (1008CS) 100k 5% resistor (0603) 1.5k 5% resistor (0603) 3.01k 5% resistor (0603) 2.37k 5% resistors (0603) 49.9k 5% resistor (0603) 511 5% resistor (0603) 10k 5% resistor (0603) 0 5% resistor (0402) MAX3902 die in QFN24 Shunts MAX3902 EV board
Note: Please indicate that you are using the MAX3902 when ordering from these suppliers.
1) 2) 3) 4)
Install a shunt across JU4. Remove shunts from JU1and JU5. Connect a +3.3V power supply to J6. Connect ground to J10. Connect a DC current source to J18 and adjust the input current to 220 Connect a data signal to J1 (IN) with a 2VP-P P-P input current.
5)
Connect J2 and J3 to a high-speed 50I oscilloscope. The output seen on the oscilloscope should be an 800mVP-P differential output.
PART TEMP. RANGE IC PACKAGE MAX3902EVKIT -40C to +125C 24QFN
The MAX3902 EV kit contains an optical evaluation section. 8) Install a photodiode with optical source. For layout configuration refer to Figure 1. 9) Connect J15 and J16 to a high-speed 50U oscilloscope. The output seen on the oscilloscope should be an 800mVP-P differential output. 10) Connect a voltmeter to the TP13 (STATUS) test point. The output will indicate if the optical connection is successful.
_________________________________________________________________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.
C2
1
C1
1
AVX
843-444-2863
843-626-3123
DESIGNATION QTY
DESCRIPTION 0.01F 10% Ceramic Capacitor (0402) 0.022F 10% Ceramic Capacitor (0402)
SUPPLIER
PHONE
FAX
(c)
|
Optical Evaluation Possible
The MAX3902 evaluation kit (EV-kit) provides electrical evaluation of the MAX3902 receiver. The EV-kit also includes an optical section where a photodiode can be installed and optical evaluation is possible.
Easy +3.3V Power Supply Operation
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COMPONENT JU1, JU4
NAME -
JU5
Installing a shunt across JU1 or JU4 (or both) emulates photocurrent at the FILTER pin, which allows MAX3902 to enter the operational mode (STATUS = LOW). Removing shunts from JU1 and JU4 enters the standby mode (STATUS=HIGH). Used for bypassing the supply filtering if needed.
JU5 R11 511
J6 VCC J10 GND
L2 1H C15 10F C14 0.1F C16 0.1F
VCC
TP7 C10 0.1F
J18 DC BIAS
N .C .
N .C .
GND
GND
JU4 R4 2.37k C2 0.022F JU1 R3 3.0k
R22 10k R1 100k R2 1.5k R23 0 C28 2pF C29 OPEN
1 2 3 4 5 6
GND
N .C .
C1 0.01F
R5 2.37k
J1 IN
R6 49.9
VCC
OUT+
OUT-
GND
GND
7
C17 0.1F
8
9
10
11
12
24
23
22
21
20
19
C4 0.1F
C5 0.1F
N .C .
N .C .
GND
GND
GND
N .C .
J2 OUT+1
J3 OUT-1
1
PHOTODIODE (NOT PROVIDED)
F ILT E R IN GND N .C . VCC VCC OUT+ OUTGND GND GND VCC
N .C . N .C .
18 17 16 15 14 13
C35 10pF
2 3 4 5 6
VCC
U2 M A X 39 02
N .C . N .C . ST ATUS N .C .
TP13
7
C39 0.1F
8
9
10
11
12
C33 0.1F J15 OUT+1
C34 0.1F J16 OUT-1
Figure 1. MAX3902 EV Kit Schematic Diagram
2 ________________________________________________________________________________________
GND
VCC
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FUNCTION
24 23 22 21 20 19
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F ILT E R IN GND N .C . VCC VCC
N .C . N .C .
18 17 16 15 14 13
C6 10pF
U1 M A X 39 02
N .C . N .C . ST ATUS N .C .
TP3
Figure 2. MAX3902 EV Kit Component Placement Guide - Component Side
Figure 3. MAX3902 EV Kit PC Board Layout Solder Side
________________________________________________________________________________________
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Figure 4. MAX3902 EV Kit PC Board Layout Ground Plane
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.
4 ___________________ Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
(c) 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
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Figure 5. MAX3902 EV Kit PC Board Layout Power Plane
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