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| 19-0077; Rev 0, 1/05 MAX3991/MAX3992 Evaluation Kit _______________ General Description The MAX3991/MAX3992 evaluation kit (EV kit) simplifies evaluation of both receiver (MAX3991) and transmitter (MAX3992) XFP signal conditioning ICs. This EV kit allows testing of all the MAX3991 and MAX3992 features. A single reference clock provides timing for both the MAX3991 and MAX3992. The recovered clock outputs may be enabled for jitter testing. ________________________ Features Fully Assembled and Tested Low Loss Dielectric Transmission Lines SMA Connectors for Ease in Lab Testing Single +3.3V Supply Operation Evaluates: MAX3991/MAX3992 _______________Ordering Information PART MAX3991/MAX3992 EVKIT TEMP RANGE 0 to +85 C C IC-PACKAGE 24 Thin QFN __________________________________________________________________________Component DESIGNATION C18, C21 C25-26, C29-32, C35, C40, C43, C51, C5, C19-20, C2223, C27-28, C3334, C38-39, C4142, C44-45 C24, C52 C1, C4 C2-3 R33, R36 R32, R35 R11, R20 R13, R17, R25, R30 R12, R16, R19, R29 R31, R34 QTY 12 DESCRIPTION 0.01F 10% 6.3V Ceramic Capacitor (0201) 0.01F 5% 10V Ceramic Capacitor (0402) DESIGNATION L5-6 L1 15 D1-4 Q1-4 2 2 2 2 2 0 4 4 2 .047F 10% 10V Ceramic Capacitor (0402) 0.1F 10% 10V Ceramic Capacitor (0402) 22F 5% 10V Min Tantalum Capacitor (B CASE) 1k 5% Resistor (0402) 10k 5% Resistor (0402) Not Installed 4.7k 5% Resistor (0603) 511 1% Resistor (0603) 20k Variable Resistor BOURNS 3296W-1-203 TP1-5, TP7, TP11-14 J1-2 J5-12, J14-19 JU1-2, JU5-6 None TP6, TP8 U6 U7 QTY 2 1 4 4 12 14 4 4 0 1 1 DESCRIPTION 0 Resistor (0402) List 4.7H 10% Inductor Coilcraft 1008LS-472XKBC LED RED T1 package NPN Transistor (SOT23) FMMT491A Testpoint SMA Connectors, Sidemount tab, Digi-Key J502-ND 3-Pin Header, 0.1" Spacing Shunts Not Installed MAX3991ETG (24QFN) MAX3992ETG (24QFN) __________________________________________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. MAX3991/MAX3992 Evaluation Kit __________________Component SUPPLIER AVX Coilcraft Murata Zetex PHONE 803-946-0690 847-639-6400 814-237-1431 516-543-7100 Suppliers FAX 803-626-3123 Evaluates: MAX3991/MAX3992 847-639-1469 814-238-0490 516-864-7630 are using the these component Note: Please indicate that you MAX3991/MAX3992 when contacting suppliers. _____________MAX3991 Quick Start 1) 2) 3) 4) Connect the data signal to J5 (SDI+) and J6 (SDI-). Connect a reference clock at 1/16 data rate to J18 and J19. th _____________MAX3992 Quick Start 1) 2) 3) 4) Connect the data signal to J16 (SDI-) and J17 (SDI+). Connect a reference clock at 1/16 data rate to J18 and J19. th or 1/64 th the or 1/64 th the Connect SDO+ and SDO- to the 50 inputs of a high-speed oscilloscope at J9 and J10. Connect a +3.3V supply to the VCC terminal J1 and ground to the GND terminal J2. (There is a voltage drop across L1, so verify VCC=3.3V at TP5 or TP7.) Set VTH (using R31) to ten times the desired LOS Assert level. (For example 200mV at TP13 will result in a typical assert level of 20mVP-P.) Alternatively, the LOS circuit can be disabled by * turning R31 fully clock-wise. Set the FCTL pins (JU1 and JU2) to ground. This will disable SCLKO. Refer to the table below for other control options. Connect SDO+ and SDO- to the 50 inputs of a high-speed oscilloscope at J11 and J12. Connect a +3.3V supply to the VCC terminal J1 and ground to the GND terminal J2. (There is a voltage drop across L1, so verify VCC=3.3V at TP5 or TP7.) Disable the LOS detector by turning R34 fully * clock-wise. SET the FCTL pins (JU1 and JU2) to ground. This will disable SCLKO. Refer to the table below for other control options. 5) 5) 7) 6) * Note: The VTH control voltage is valid from 150mV to 500mV. Setting VTH > 2V will disable the LOS detector. _____________________________________Adjustments and Control Descriptions COMPONENT NAME FCTL1 GND VCC JU1, JU2 FUNCTIONAL CONTROL GND VCC JU5, JU6 R31, R34 D1, D4 D2, D3 POL VTH LOL LOS VCC VCC FCTL2 GND GND FUNCTION MODE Normal Operation, Serial Clock Disabled Standby - Power Down Mode Normal Operation, Serial Clock Disabled (MAX3992 only.) Serial Clock and Serial Output Disabled (MAX3991 only.) Serial Clock Enabled for Jitter Testing Polarity Control, Set to VCC or Leave Open for Standard Polarity Apply the Desired Threshold for Loss of Signal Loss of Lock Indicator. The LED will Light During Loss of Lock. Loss of Signal Indicator. The LED will Light During Loss of Signal. ________________________________________________________ 2 J19 J18 C45 0.01 F VCC R32 10k R13 4.7k D3 D4 Q4 TP4 R29 511 24 23 22 21 20 C44 0.01 F V CC R35 10k R17 4.7k TP14 FCTL1 C31 0.01 F LOS VTH FCTL1 VCC REFCLK+ 1 19 VCC R31 20k R30 4.7k Q3 TP3 24 23 22 21 20 19 VCC R34 20k R36 1k VCC R25 4.7k D2 Q2 TP2 R16 511 LOL 18 VCC R33 1k FCTL1 FMMT491A D1 Q1 TP1 FMMT491A VCC R19 511 TP13 C30 0.01 F R12 511 VCC VCC GND GND U7 C42 0.01 F SDIJ9 SDI+ GND 5 3 17 2 18 LOS LOL VTH 1 REFCLK- REFCLK+ C18 0.01 F 2 C29 0.01 F C43 0.01 F J10 J17 REFCLK- VCC FCTL1 VCC V CC V CC GND SDO- GND U6 SDI+ SDO+ 16 17 C32 0.01 F J11 16 J5 3 C19 0.01 F 4 C28 0.01 F C27 0.01 F VCC 0.01 F C40 6 C33 0.01 F J6 SDIGND GND C26 6 14 C20 0.01 F SDO5 MAX3991 15 J16 C41 0.01 F 4 MAX3992 SDO+ GND 15 C34 0.01 F 14 J12 VCC VCC 0.01 F VCC VCC VCC CFIL POL FCTL2 SCLKO+ SCLKO13 C21 C35 V CC V CC VCC FCTL2 SCLKOPOL CFIL SCLKO+ 13 VCC 0.01 F 0.01 F 7 8 9 10 11 12 FCTL2 C23 0.01 F TP5 VCC J8 JU6 J7 C25 0.01 F L6 Sho rt VCC L1 4.7 H VCC FCTL1 JU1 R11 C24 0.047 F VCC C22 0.01 F Not Installe d TP8 (No t Installe d ) C38 0.01 F 7 8 9 10 11 12 TP6 (No t Installe d ) FCTL2 C39 0.01 F VCC J14 J15 JU5 TP7 C51 0.01 F No t Installe d C52 R20 0.047 F L5 Sho rt VCC Figure 1. MAX3991/MAX3992 EV Kit Schematic C3 22 F C4 0.1 F C2 22 F C5 0.01 F C1 0.1 F FCTL2 JU2 J1 3.3V Evaluates: MAX3991/MAX3992 _______________________________________________________ J2 GND MAX3991/MAX3992 Evaluation Kit 3 MAX3991/MAX3992 Evaluation Kit Evaluates: MAX3991/MAX3992 Figure 2. MAX3991/MAX3992 EV Kit PC Component Placement Guide--Component Side Figure 3. MAX3991/MAX3992 EV Kit PC Board Layout-- Component Side Figure 4. MAX3991/MAX3992 EV Kit PC Board Layout-- Ground Plane _______________________________________________________ 4 MAX3991/MAX3992 Evaluation Kit Evaluates: MAX3991/MAX3992 Figure 5. MAX3991/MAX3992 PC Board Layout--Power Plane Figure 6 MAX3991/MAX3992 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 (c) 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products |
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