MAX3885 Evaluation MAX3885 evaluation kit) simplifies evaluation

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MAX3885 Evaluation MAX3885 evaluation kit) simplifies evaluation

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MAX3885 Evaluation
MAX3885 evaluation kit) simplifies evaluation MAX3885 2.488Gbps, SDH/SONET 1:16 deserializer. requires only single +3.3V supply includes external components necessary interface with 3.3V PECL LVDS logic. board connected directly output clock-and-data-recovery circuit (such MAX3875) input LVDS device (such overhead termination circuit). signal generator stimulus system used with oscilloscope evaluate MAX3885's basic functionality.
_Features
Single +3.3V Supply Inputs Outputs Terminated Interfacing with 3.3V PECL LVDS Logic Fully Assembled Tested Surface-Mount Board
Evaluates: MAX3885
Component Suppliers
SUPPLIER Coilcraft Sprague PHONE 847-639-6400 603-224-1961 847-639-1469 603-224-1430 PART MAX3885EVKIT
Ordering Information
TEMP. RANGE -40°C +85°C PACKAGE TQFP
Note: Please indicate that using MAX3885 when contacting these component suppliers.
Component List
DESIGNATION C12-C21 R12, R15, R18, R21, R24, R27, R30, R33, R36, R39, R42, R45, R48, R53, R56, R59, DESCRIPTION 0.1µF, min, ceramic caps (0603) installed (shorted board trace) 33µF, min, ±10% tantalum Sprague 293D336X0010C2 2.2µF, min, ±10% tantalum Sprague 293D225X0010A2 installed (open) 133, resistors (0603) 86.6, resistors (0603) DESIGNATION R13, R14, R16, R17, R19, R20, R22, R23, R25, R26, R28, R29, R31, R32, R34, R35, R37, R38, R40, R41, R43, R44, R46, R47, R49-R52, R54, R55, R57, R58, R60, J1-J6 J7-J40 IN1, 100, resistors (0603) None None DESCRIPTION
installed
connectors mount) connectors mount) 56nH inductor Coilcraft 0805CS-560XKBC Test points MAX3885ECB MAX3885 board MAX3885 data sheet
Maxim Integrated Products
free samples latest literature: http://www.maxim-ic.com, phone 1-800-998-8800. small orders, phone 1-800-835-8769.
MAX3885 Evaluation Evaluates: MAX3885
_Detailed Description
MAX3885 simplifies evaluation MAX3885 deserializer. operates from single +3.3V supply includes external components necessary interface with 3.3V PECL LVDS logic. Each PECL input (SCLK+, SCLK-, SD+, SD-) terminated board with Thevenin equivalent (VCC 2V). These inputs driven directly output 3.3V PECL device, such clock-and-data-recovery circuit (e.g., MAX3875). inputs other than directly coupled 3.3V PECL, provision made board couple input. Remove trace between install 0.1µF 0603 ceramic capacitors (see MAX3885 data sheet). LVDS outputs (PCLK+, PCLK-, PD_+, PD_-) differentially terminated with resistors between complementary outputs. Each output directly drive LVDS input high-impedance input oscilloscope (see Connecting LVDS Outputs Oscilloscope Inputs When driving LVDS input that already includes differential termination, remove termination resistor corresponding appropriate LVDS output. synchronization inputs (SYNC+, SYNC-) internally terminated LVDS inputs with differential input resistance. Ensure that LVDS devices driving these inputs redundantly terminated. signal inputs outputs coupled transmission lines. input signal lines equal length minimize propagation-delay skew. Likewise, output signal lines equal length.
_Applications Information
Connecting LVDS Outputs Oscilloscope Inputs
monitor LVDS signal input oscilloscope, remove differential load resistor between complementary outputs couple each output oscilloscope input. example, observe signal input instrument, remove resistor from board place capacitor block series with each output (PD0+ PD0-) instrument input. connect MAX3885 outputs directly inputs terminations ground. Choose coupling capacitor large enough value prevent pattern-dependent distortion output signal.
MAX3885 Evaluation Evaluates: MAX3885
PD15PD14PD13PD12PD11PD10PD9PD85 PD15+ PD14+ PD13+ PD12+ PD11+ PD10+ PD9+ PD8+ 0.1µF PCLKPD7PD6PD5PD4PD3PD2PD1PD03 PCLK+ PD7+ PD6+ PD5+ PD4+ PD3+ PD2+ PD1+ PD0+ SCLK+ 0.1µF SCLKL1 56nH 0.1µF 0.1µF 0.1µF 0.1µF 0.1µF 0.1µF 0.1µF 86.6 SYNCJ6 SYNC+ 86.6 SCLKC8 SHORT SYNCSDC5 0.1µF 86.6 SHORT SHORT 0.1µF 86.6 OPEN OPEN OPEN OPEN
SHORT
SCLK+
SYNC+
+3.3V 33µF
2.2µF
0.1µF
0.1µF
0.1µF
Figure MAX3885 Schematic
MAX3885 Evaluation Evaluates: MAX3885
PD15PD15+ OPEN OPEN PD14+
PD14PD13+ OPEN OPEN
PD13PD12+ OPEN OPEN
PD12PD11+ OPEN OPEN
PD11R46 OPEN OPEN
PD10+ PD1064 PD14+ PD15PD14PD15+ PD13+ PD13GND PD12PD11PD12+ PD11+ PD10+ PD10GND
SCLK+ SCLK10 SYNC15
SDVCC SCLK+ SCLKVCC SYNCSYNC+
PD9+ PD9PD8+ PD8VCC PD7+ PD7PD6+ PD6PD5+ PD5VCC
PD7+ PD7PD6+ PD6PD5+ PD5PD9+ PD9PD8+ PD8-
MAX3885
PCLK+
PCLK-
PD2+
PD0+
PD1+
PD3+
PD0-
PD1-
PD4+
PD2-
PD3-
PD4-
SYNC+ PD4+ PD4-
OPEN PCLKPCLK+ OPEN PD0-
OPEN OPEN PD0+ PD1-
OPEN OPEN PD1+ PD2-
OPEN OPEN PD2+ PD3-
OPEN OPEN PD3+
Figure MAX3885 Schematic (continued)
MAX3885 Evaluation Evaluates: MAX3885
PD10PD10+ OPEN OPEN
PD10+ PD10R39 PD9+ PD9PD8+ PD8PD8PD8+ PD7+ PD7PD6+ PD6PD5+ PD5R34 OPEN PD6PD6+ OPEN PD7PD7+ OPEN OPEN OPEN OPEN PD9PD9+ OPEN OPEN
PD4+ PD4J19
PD5J18
OPEN OPEN PD5+
OPEN PD4PD4+ OPEN
Figure MAX3885 Schematic (continued)
MAX3885 Evaluation Evaluates: MAX3885
1.0"
Figure MAX3885 Component Placement Guide-Component Side
MAX3885 Evaluation Evaluates: MAX3885
1.0"
Figure MAX3885 Component Placement Guide-Solder Side
MAX3885 Evaluation Evaluates: MAX3885
1.0"
Figure MAX3885 Board Layout-Component Side
MAX3885 Evaluation Evaluates: MAX3885
1.0"
Figure MAX3885 Board Layout-Solder Side
MAX3885 Evaluation Evaluates: MAX3885
1.0"
Figure MAX3885 Board Layout-Power Plane
MAX3885 Evaluation Evaluates: MAX3885
1.0"
Figure MAX3885 Board Layout-Ground Plane
MAX3885 Evaluation Evaluates: MAX3885
NOTES
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 1999 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.

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