MAX3967AEVKIT

19-0142; Rev 0, 4/14/2005 MAX3967A Evaluation Kit ______________ General Description ________________________ Features Fully Assembled and Tested Single +3.3V Power Supply Operation AC-Coupling Provided On-Board Allows Electrical or Optical Evaluation __________________ Component List DESIGNATION QTY DESCRIPTION C5, C6, C9, C11 D1 1 J1 – J4 4 JU1, JU2, JU9 JU3, JU4, JU5, JU7, JU8 3 10µF ±10% tantalum capacitor (B case) 0.1µF ±5% ceramic capacitor (0603) 0.01µF ±5% ceramic capacitors (0603) 0.22F ±5% ceramic capacitors (0603) LED, user supplied SMA side mount connectors, tab contact 3-pin headers, 0.1in centers 5 2-pin headers, 0.1in centers C1 1 C2 1 C4, C7, C8 3 4 L1 1 L2 1 Q1 1 R1 1 R2 R3, R4 R5 R6 1 2 1 1 R7 1 R8, R9 R10, R12 R11 R13 2 2 1 1 4 1 8 1 TP1-3, TP7 U1 None None 1µH inductor 1008CS-102xjb Ferrite bead (0603) Murata BLM18PG300SN1 Zetex FMMT591A PNP transistor (SOT-23) 100kΩ variable resistor BOURNS 3296W-1-104 DIGI-KEY3296W-1-104-ND 4.99Ω ±1% resistor (0603) 453Ω resistors (0603) 1.0kΩ ±1% resistor (0603) 698Ω ±1% resistor (0603) 5kΩ variable resistor DIGI-KEY3296W-1-502-ND 82.5Ω ±1% resistors (0603) 121Ω ±1% resistors (0603) 49.9Ω ±1% resistor (0603) 20.0kΩ ±1% resistor (0603) _____________Ordering Information TEMP RANGE MAX3967AEVKIT -40°C to +85°C IC-PACKAGE 24 Thin QFN _____________ Component Suppliers SUPPLIER AVX Coilcraft Murata Zetex PHONE 803-946-0690 847-639-6400 814-237-1431 516-543-7100 FAX 803-626-3123 847-639-1469 814-238-0490 516-864-7630 Note: Please indicate that you are using the MAX3967A when contacting these component suppliers. _______________________ QuickStart Electrical Evaluation For electrical evaluation of the MAX3967A, configure the evaluation kit as follows: 1) Remove all jumpers if there are any. Then reinstall JU3 and JU4. 2) To enable the output, connect TX_DISABLE to GND by placing a shunt on the right side of JU9, or leave JU9 open. 3) Connect an oscilloscope to JU1 and JU2 (OUT+ and OUT-) using 50Ω cables and 50Ω oscilloscope terminations. 4) Using a multimeter on the right side of JU8 and ground, adjust the potentiometer R7 to be 300Ω. Attach MODSET to the potentiometer by placing a jumper on JU8. 5) Install a shunt on jumper the right side of JU1 (TCNOM). See Figure 7 for jumper table. Test pointsDIGI-KEY 5000K-ND MAX3967AETG Shunts DIGIKEY 9000-ND MAX3967A EV board, rev B PART __________________________________________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. Evaluates: MAX3967A The MAX3967A evaluation kit (EV kit) is an assembled demonstration board that provides complete electrical or optical evaluation of the MAX3967A. Evaluates: MAX3967A MAX3967A Evaluation Kit 6) Apply a differential signal to J4 (IN+) and J3 (IN-) with 1V differential signal amplitude and 100Mbps data rate. 3) Solder LED onto socket D1, see the Figure 1 for socket layout. Connect the anode to OUT- and the cathode to OUT+. 7) Adjust the oscilloscope vertical gain of both channels to 10mV/div. Set the oscilloscope to display the differential signal [(OUT+) - (OUT-)]. 4) Attach MODSET to the potentiometer by placing a jumper on JU8. 5) 8) Attach a 3.3V power source to the VCC and GND terminals (J6 and J10). Set the current limit to 300mA. Install a shunt on jumper the right side of JU1 to set the tempco to “nominal” (TC connected to TCNOM). 6) Connect output of LED to an optical-to-electrical (Oto-E) converter and connect the output of the O-to-E to an oscilloscope. 7) Apply a differential signal to J4 (IN+) and J3 (IN-) with 1V differential signal amplitude and 100Mbps data rate. 8) Attach a 3.3V power source to the VCC and GND terminals (J6 and J10). Set the current limit to 300mA. 9) To enable the output, connect TX_DISABLE to GND by placing a shunt on the right side of JU9, or leave JU9 open. 9) Place an ammeter across JU7 to measure the IMON current. 10) The output signal is approximately 40mVp-p. Adjust R7 to vary the level of the signal. Optical Evaluation For optical evaluation of the MAX3967A, configure the evaluation kit as follows: 1) Remove resistor R2 from the evaluation kit. 2) Disconnect cables from J1 (OUT+) and J2 (OUT-). Table 1. Adjustment and Control Descriptions (see Quick Start first) COMPONENT NAME FUNCTION D1 LED JU1 TCNOM JU1 connects TC to either TCNOM or TCMIN. Place a jumper on the right two pins to connect TC to TCNOM. Place a jumper on the left two pins to connect TC to the jumper JU2. JU2 TCMIN JU1 must have the left two pins shorted in order for JU2 to be operable. JU2 will connect TC directly to TCMIN when the right two pins are shorted or connect TC to TCMIN through R1 when the left two pins are shorted. JU3 PB1 Shorting JU3 connects PB1 to ground. See MAX3967A data sheet, table 1. JU4 PB2 Shorting JU4 connects PB2 to ground. See MAX3967A data sheet, table 1. JU5 PB3 Shorting JU5 connects PB3 to ground. See MAX3967A data sheet, table 1. JU7 MON JU7 connect MON to ground through a 1kΩ resistor. JU8 MODSET JU9 TX_DISABLE R1 RTC R7 RMODSET D1 is a socket for an LED in a TO-46 header. Remove R2 before inserting an LED into socket D1. Place a jumper on JU8 to connect MODSET to potentiometer R7. Enables/disables the output modulation. Shunt across the left two pins of JU9 to force a static zero at the outputs. TX_DISABLE has an internal pull down resistor to enable the part when this pin is left open. When the left two pins of JU1 and JU2 have been shorted this potentiometer is used to set the tempco of the modulation current. When JU8 is shunted, R7 allows adjustment of the LED modulationcurrent amplitude. 2 _________________________________________________________________________________________ MAX3967A Evaluation Kit TP3 V CC R13 20k Ω R1 100k Ω J3 IN- C11 0.22 µ F C9 0.22 µ F R9 82.5 Ω R8 82.5 Ω R12 121 Ω R10 121Ω V CC R11 49.9 Ω TP7 VCC J6 +3.3V or +5V L1 1 µH V CC JU9 C1 10 µ F J10 GND V CC C2 0.1 µF C8 0.01 µF JU2 24 23 JU1 22 21 V EE TX_DISABLE TCMIN 20 19 IN- IN+ V CC 1 18 TCNOM MON N.C. MAX3967 A 4 PB2 5 V CCOUT (Exposed PAD connected to Ground) 6 V EEOUT V CCOUT V EEOUT OUT+ OUT+ 7 8 9 OUT- OUT10 V CC 15 V CC 14 PB3 R5 1k Ω 16 U1 3 PB1 JU5 JU8 JU7 17 TC JU4 R7 5k Ω MODSET 2 JU3 R6 698 Ω 11 TP2 C4 0.01 µF 13 C7 0.01 µ F N.C. 12 L2 FERRITE BEAD D1 V CC R3 453 Ω TP1 R2 4.99 Ω Q1 PNP C5 0.22 µ F R4 453 Ω C6 0.22 µ F J2 OUT- J1 OUT+ REPRESENTS A CONTROLLED-IMPEDANCE TRANSMISSION LINE, Z 0 = 50 Ω Figure 1. MAX3967A EV Kit Schematic Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600____ 3 Evaluates: MAX3967A J4 IN+ Evaluates: MAX3967A MAX3967A Evaluation Kit 4 __________________________________________________________________ _____ MAX3967A Evaluation Kit Evaluates: MAX3967A Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600____ 5 Evaluates: MAX3967A MAX3967A Evaluation Kit 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. 6 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600  2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products