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| 19-0026; Rev 0, 10/04 MAX3982 Evaluation Kit _______________ General Description The MAX3982 evaluation kit (EV Kit) is an assembled demonstration board that provides electrical evaluation of the MAX3982 SFP Copper-Cable Preemphasis Driver. All control inputs are adjustable by jumpers, and LOS is available through a test point. _________________________Features Evaluates: MAX3982 Fully Assembled and Tested Easy Selection of Operating Modes ____________________ Component List DESIGNATION QTY C1 C2, C3, C8 C4 - C7 J1-J4 J6, J10, TP1 - TP3 JU1 - JU3, JU5, JU6 JU4 JU1 - JU6 L1 R1 U1 None None 1 3 4 4 5 5 1 6 1 1 1 DESCRIPTION 33F tantalum capacitor 0.1F 10% ceramic capacitors (0402) 0.01F 10% ceramic capacitors (0402) SMA connectors, tab contact, edge mount Test points Digi-Key 5000K-ND 2-pin headers, 0.1in centers 3-pin header, 0.1in centers Shunts 4.7H inductor Coilcraft 1008CS-472XJB 4.7k 5% resistor (0402) MAX3982UTE 16-pin QFN MAX3982 evaluation circuit board, rev A MAX3982 data sheet ______________ Ordering Information PART MAX3982EVKIT TEMP. RANGE 0C to +85C IC PACKAGE 16 QFN ______________Component Suppliers SUPPLIER AVX Digi-Key Murata PHONE 843-448-9411 218-681-6674 770-436-1300 FAX 843-448-1943 218-681-3380 770-436-3030 Note: Please indicate that you are using the MAX3982 when ordering from these suppliers. ________________________ Quick Start 1) 2) 3) 4) 5) 6) 7) 8) Connect a +3.3V supply to the +3.3V terminal and ground to GND. Install shunt at jumper JU4 in "ENABLE" position to enable the output. Apply 1Gbps to 4.25Gbps data to IN+ and IN- (J1 and J2). Connect OUT+ and OUT- to a 50 ohm-terminated oscilloscope. Shunt JU5 (LOS PULLUP) to terminate the LOS output with 4.7k to VCC. Adjust pre-emphasis with jumpers JU2 and JU3 (PE1 and PE0). Select output amplitude with jumper JU1 (OUTLEV). Monitor LOS output at TP1 and select LOS sensitivity with JU6 (LOSLEV). _________________________________________________________________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. MAX3982 Evaluation Kit _______________________________________________ NAME TYPE 2-pin header 2-pin header 2-pin header SHUNT POSITION OPEN SHUNT (GND) OPEN SHUNT (GND) OPEN SHUNT (GND) OPEN TX_DISABLE (JU4) ENABLE 3-pin header AUTO Jumper and Test Point Descriptions DESCRIPTION Selects maximum output swing Selects reduced output swing Enables most significant bit of pre-emphasis control Disables most significant bit of pre-emphasis control Enables least significant bit of pre-emphasis control Disables least significant bit of pre-emphasis control Disables data output Enables data output Enables autodetect by connecting LOS to TX_DISABLE. JU5 must be shunted or an external voltage (3.0V to 5.5V) must be present on pin 1 of JU5 for proper operation of autodetect. Allows external voltage (3.0V to 5.5V) applied at pin 1 of JU5 as LOS pullup voltage Sets VCC as the LOS resistor pullup voltage Sets LOS threshold to lower sensitivity (higher threshold) Sets LOS threshold to higher sensitivity (lower threshold) Monitors the Loss-of-Signal output. LOS will be low when the input signal level is valid and JU5 is either shunted or an external voltage (3.0V to 5.5V) is present at pin 1 of JU5. Evaluates: MAX3982 OUTLEV (JU1) PE1 (JU2) PE0 (JU3) LOS PULLUP (JU5) LOSLEV (JU6) 2-pin header OPEN SHUNT (VCC) 2-pin header OPEN SHUNT (GND) - LOS (TP1) Test Point 2 _________________________________________________________________________________________ MAX3982 Evaluation Kit Evaluates: MAX3982 VCC TP2 VCC J6 +3.3V J10 GND L1 4.7H C1 33F C2 0.1F JU6 LOSLEV VCC C8 0.1F VC C 12 J3 11 10 9 C6 0.01F C7 0.01F OUT+ VCC JU5 LOS PULLUP R1 4.7k TP1 LOS JU4 TX_DISABLE AUTO ENABLE TP3 GND 16 15 14 TX_DISABLE LOSLEV LOS VCC C3 IN+ J1 0.1F C4 0.01F C5 0.01F 4 1 2 3 VCC2 VCC2 OUT+ OUTGND EP* VCC1 IN+ INGND IN- J2 MAX3982 U1 OUTLEV 13 J4 OUT- 5 6 7 JU1 OUTLEV JU2 PE1 JU3 PE0 *EP = EXPOSED PAD, SOLDERED TO GROUND Figure 1. MAX3982 EV Kit Schematic 1.85in 2.69in Figure 2. MAX3982 EV Kit Component Placement Guide - Component Side _________________________________________________________________________________________ 8 GND PE1 PE0 3 MAX3982 Evaluation Kit Evaluates: MAX3982 Figure 3. MAX3982 EV Kit PC Board Layout - Component Side, Layer 1 Figure 4. MAX3982 EV Kit PC Board Layout - Ground Plane, Layer 2 4 _________________________________________________________________________________________ MAX3982 Evaluation Kit Evaluates: MAX3982 Figure 5. MAX3982 EV Kit PC Board Layout - Power Plane, Layer 3 Figure 6. MAX3982 EV Kit PC Board Layout - Bottom, Layer 4 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 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products |
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