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19-2179; Rev 0; 10/01 MAX3971 Evaluation Kit General Description The MAX3971 evaluation kit (EV kit) simplifies evaluation of the MAX3971 10.3Gbps limiting amplifier. The EV kit enables testing of all the device's functions. SMA connectors with 50 controlled-impedance connections to the MAX3971 are provided for all data input and output ports to facilitate connection to high-speed test equipment. Features o SMA Connectors for All High-Speed Inputs and Outputs o Fully Assembled and Tested o Single 3.3V Power Supply Evaluates: MAX3971 Component List DESIGNATION C1-C4 QTY 4 DESCRIPTION 0.001F 10% ceramic capacitors (0402) Murata GRM36X7R102K050AD 0.1F 10% ceramic capacitors (0603) Murata GRM39X7R104K016AD 2.2F 10% ceramic capacitor (1206) Murata GRM42-6X7R225K016AD 33F 10% tantalum capacitor AVX TAJC336K010 Open 0.1F 10% ceramic capacitors (0402) Murata GRM36X5R104K010AD SMA connectors (edge-mount, tab contact) Test points Digi-Key 5000K-ND Open 1 x 3-pin header (0.1in center) Murata BLM11HA102SG Open MAX3971UGP (20 QFN) Shunt MAX3971 evaluation circuit board, Rev B MAX3971 data sheet PART MAX3971EVKIT Ordering Information TEMP RANGE 0C to +85C IC PACKAGE 20 QFN* *Exposed paddle C6, CZ 2 Component Suppliers SUPPLIER AVX Murata PHONE 843-444-2863 415-964-6321 FAX 843-626-3123 415-964-8165 C7 1 Note: Please indicate that you are using the MAX3971 when contacting these component suppliers. C8 C9, C16-C21 C11-C14 1 0 4 Quick Start 1) Connect a 3.3V power supply to J6 (VCC). Connect the power supply ground to J7. 2) Connect a differential or single-ended input signal (differential voltage amplitude between 10mVp-p and 800mVp-p) to the inputs (IN+ and IN-) by using SMA cables suitable for 10.3GHz use. 3) Connect a 50 oscilloscope to the SMA connectors J3 and J4 (OUT+, OUT-) to observe the output of the limiter. The output signal is approximately 200mVp-p to 400mVp-p differential. 4) To disable the output signals OUT+ and OUT-, jumper the three-pin header JU1 from the center pin (pin 2) to VCC (pin 1). To enable the output signals, jumper should be from pin 2 to ground (pin 3). J1-J4 J6, J7 J8-J14 JU1 L1 R3, R4 U1 None None None 4 2 0 1 1 0 1 1 1 1 Notes 1) At high frequencies such as from 1GHz to 10GHz, delays with the board and cables affect measurements. Mismatches in cables can cause significant measurement errors. Edge speeds are best observed by using single-ended methods. Careful calibration of cables, attenuators and the board is necessary. ________________________________________________________________ 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. MAX3971 Evaluation Kit Evaluates: MAX3971 R3 OPEN C21 OPEN J13 OPEN C20 OPEN VCC VCC J6 L1 R4 OPEN VCC C1 0.001F C8 33F J7 GND J1 IN+ J2 3 ININC12 0.1F 4 GNDIN5 N.C. GND 6 J11 OPEN N.C. 7 GND 8 1 2 C7 2.2F C6 0.1F 20 VCC GNDIN+ IN+ U1 CZ 0.1F VCC J14 OPEN C2 0.001F VCC JU1 C9 OPEN J8 OPEN 19 CZ18 CZ+ 17 16 VCC DISABLE VCC OUT+ VCC 15 14 C3 0.001F C13 0.1F C14 0.1F VCC VCC 12 GND 11 N.C. 9 N.C. 10 C4 0.001F C11 0.1F J3 OUT+ J4 OUT- OUT- 13 MAX3971 J9 OPEN C16 OPEN C18 OPEN J10 OPEN C17 OPEN CALIBRATION STRIP C19 OPEN J12 OPEN Figure 1. MAX3971 EV Kit Schematic 2 _______________________________________________________________________________________ MAX3971 Evaluation Kit Evaluates: MAX3971 1.0" Figure 2. MAX3971 EV Kit Component Placement Guide-- Component Side 1.0" Figure 3. MAX3971 EV Kit PC Board Layout--Component Side _______________________________________________________________________________________ 3 MAX3971 Evaluation Kit Evaluates: MAX3971 1.0" Figure 4. MAX3971 EV Kit PC Board Layout--Ground Plane 1.0" Figure 5. MAX3971 EV Kit PC Board Layout--Power Plane 4 _______________________________________________________________________________________ MAX3971 Evaluation Kit Evaluates: MAX3971 1.0" Figure 6. MAX3971 EV Kit PC Board Layout--Solder Side _______________________________________________________________________________________ 5 MAX3971 Evaluation Kit Evaluates: MAX3971 LAYER PROFILE EV3971 REV B EVALUATION BOARD THIS IS A 50 CONTROLLED-IMPEDANCE BOARD. THE LAYER PROFILE IS BASED ON THE FOLLOWING ASSUMPTIONS: 1) DIELECTRIC MATERIAL IS ROGERS 4350 WITH A DIELECTRIC CONSTANT OF ~ 3.48 2) 1oz COPPER FOIL 3) SINGLE-ENDED TRACE WIDTH 21.5MIL 4) DIFFERENTIAL AS FOLLOWS: 10MIL 5MIL 10MIL 10 MIL ROGERS CORE AS NEEDED 10 MIL ROGERS Figure 7. MAX3971 EV Kit PC Board Layer Profile 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 (c) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. |
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