19-2179; Rev 0; 5/02 MAX3971/MAX3971A Evaluation Kits The MAX3971/MAX3971A evaluation kits (EV kits) simplify evaluation of the MAX3971 10.3Gbps limiting amplifier and the MAX3971A 10.7Gbps limiting amplifier. The EV kit enables testing of all the device’s functions. SMA connectors with 50Ω controlled impedance connections to the MAX3971/MAX3971A are provided for all data input and output ports to facilitate connection to high-speed test equipment. _________________________Features ♦ SMA Connections for all High-Speed Inputs and Outputs ♦ Single +3.3V Power-Supply ♦ Fully Assembled and Tested ____________________ Component List _______________Ordering Information DESIGNATION QTY PART TEMP RANGE MAX3971EVKIT 0°C to +85°C MAX3971AEVKIT 0°C to +85°C *EP = exposed pad C1-C4 4 C6, CZ 2 C7 1 C8 1 DESCRIPTION 1000pF +10% 10V min ceramic capacitors (0402) 0.1µF +10% 10V min ceramic capacitors (0603) 2.2µF +10% 10V min ceramic capacitor (1206) 33µF +10% 10V min Tantalum capacitor C11-C14, C16-C19 8 0.1µF +10% 10V min ceramic capacitors (0402) J1-J4, J9-J13 9 SMA connectors, edge mount, tab contact J6, J7 2 Test points JU1 1 1 x 3-pin header (0.1in centers) JU2 1 1 x 2-pin header (0.1in centers) JU2 1 Shunt L1 1 U1 1 None 1 MAX3971/MAX3971A evaluation circuit board, rev C None 1 MAX3971/MAX3971A data sheet IC PACKAGE 20 QFN-EP* 20 QFN-EP* ______________ Component Suppliers SUPPLIER PHONE FAX AVX 803-946-0690 803-626-3123 Murata 814-237-1431 814-238-0490 Note: Please indicate that you are using the MAX3971/MAX3971A when ordering from these suppliers. _________________________ Quick Start 1) Connect a +3.3V power supply to J6 (VCC). Connect the power supply ground to J7. 2) For the MAX3971, apply a 10.3Gbps, 10mVP-P to 800mVP-P differential signal between J1 (IN+) and J2 (IN-). For the MAX3971A, apply a 10.7Gbps, 5mVP-P to 800mVP-P differential signal between J1 (IN+) and J2 (IN-) Ferrite bead inductor BLM11HA102SG 3) Connect a jumper from the center pin to the ground pin of JU1 to enable the output. MAX3971UGP 4X4 20 QFN-EP 4) Connect a 50Ω oscilloscope to the SMA connectors J3 and J4 (OUT+, OUT-) to observe the output of the limiter. The output signal is approximately 250mVP-P. MAX3971AUGP 4X4 20 QFN-EP _______________________________ Notes 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 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. 1 Evaluate: MAX3971/MAX3971A _______________ General Description MAX3971/MAX3971A Evaluation Kits Evaluate: MAX3971/MAX3971A J6 J7 VCC L1 C8 33µF C7 2.2µF C6 0.1µF VCC VCC J13 C1 1000pF VCC CZ 0.1µF 1000pF JU1 C2 JU2 20 VCC1 1 C11 0.1µF J1 2 IN+ IN- J2 3 C12 0.1µF 4 5 J9 C16 0.1µF C18 0.1µF 19 CZ- 18 CZ+ 17 16 GNDIN+ VCC3 IN+ OUT+ U1 IN- OUTMAX3971 MAX3971A GNDIN- VCC3 N.C. GND GND N.C. GND 6 7 8 VCC VCC2 DISABLE N.C. 9 15 C3 1000pF 14 C13 0.1µF 13 C14 0.1µF J3 J4 VCC OUT+ OUT- 12 11 C4 1000pF N.C. 10 J11 CALIBRATION STRIP J10 J12 C17 0.1µF C19 0.1µF Figure 1. MAX3971/MAX3971A EV Kit Schematic 2 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 MAX3971/MAX3971A Evaluation Kits Evaluates: MAX3971/MAX3971A Figure 2. MAX3971/MAX3971A EV Kit Component Placement Guide-Component Side Figure 3. MAX3971/MAX3971A EV Kit PC Board Layout-Component Side _________________________________________________________________________________________ 2002 Maxim Integrated Products Printed USA 3 is a registered trademark of Maxim Integrated Products Evaluate: MAX3971/MAX3971A MAX3971/MAX3971A Evaluation Kits Figure 4. MAX3971/MAX3971A EV Kit PC Board Layout – Ground Plane Figure 5. MAX3971/MAX3971A EV Kit PC Board Layout-Power Plane 4 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 MAX3971/MAX3971A Evaluation Kits Evaluates: MAX3971/MAX3971A Figure 6. MAX3971/MAX3971A 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. _________________________________________________________________________________________ 2002 Maxim Integrated Products Printed USA 5 is a registered trademark of Maxim Integrated Products