19-2789; Rev 0; 3/03 MAX3803 Evaluation Kit The MAX3803 dc-coupled evaluation kit (EV kit) simplifies evaluation of the MAX3803 2.488Gbps to 3.125Gbps equalizer. The EV kit enables full testing of all the device’s functions. SMA connectors with 50Ω controlled-impedance transmission lines to the MAX3803 are provided for all CML input and output ports. _______________ Ordering Information PART TEMP. RANGE MAX3803EVKIT 0°C to +85°C IC PACKAGE 5X4 UCSP _________________________Features ♦ Independent Input and Output Voltage Terminations ♦ SMA Connectors for All High-Speed Inputs and Outputs ♦ Fully Assembled and Tested ________________________ Quick Start Note: ____________________ Component List DESIGNATION QTY DESCRIPTION C2-C7, C9, C12C14 10 0.1µF 10% Ceramic Capacitor (0402) C1, C8, C10, C11 4 33µF 10% Electrolytic Capacitor (B CASE) J1, J2, J9-J11, TP1, TP4-TP6 9 Test Point TP2, TP3 2 Not Installed J3-J8 6 SMA Connector EDGE MOUNT (TAB CONTACT) J15-J17 3 1X2 Pin Header (0.1” centers) J18, J19 2 1X3 Pin Header (0.1” centers) L1-L4 4 1µH Chip Inductor (0805) U1 1 MAX3803 5X4UCSP ______________ Component Suppliers SUPPLIER PHONE FAX Digi-Key 218-681-6674 218-681-3380 Murata 814-237-1431 814-238-0490 Coilcraft 847-639-6400 847-639-1469 AVX 803-946-0690 803-626-3123 Note: Please indicate that you are using the MAX3803 when ordering from these suppliers. The MAX3803 EV kit is a dc-coupled evaluation board with 50Ω input and output terminations to VTI and VTO, respectively. Care must be taken to ensure that no direct short exists between the supply voltage and supply ground. Normal dccoupled operation with all positive supplies causes permanent damage to laboratory test equipment because a dc path exists from the power supply to the ports of the oscilloscope or BERT. The MAX3803 EV kit must be operated from a negative VEE supply when DC-coupled to standard lab equipment. External ac-coupling capacitors should be used when connecting to standard lab equipment and when VEE (J11) and the EV kit’s GND (J2) are at the same potential. 1) Do not turn on the power supply until step 6. 2) Connect a –3.3V power supply to J11 (VEE). Connect the power supply ground to J2 (GND) and J1 (VCC). Remove shunt on J15; install shunts on J16, 17, and center pin to VCC on J18. 3) Apply a differential 1Gbps to 3.2Gbps input signal (400mVP-P to 1000mVP-P) between SMA connectors to FR4 board with length between 10in and 40in. 4) Connect the output of the FR4 board to the J3 and J4 (IN+) inputs. 5) Attach a differential high-speed oscilloscope with a 50Ω input to SMA connectors J5 and J6 (OUT+) to observe the output of the equalizer. 6) Turn on power supply. _________________________________________________________________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 Evaluates: MAX3803 _______________ General Description Evaluates: MAX3803 MAX3803 Evaluation Kit __________________________Alternative Supply Configurations DC-Coupled Chip-to-Chip Operation This setup allows testing of the MAX3803 in the final system. Remove shunts on J16 and J17; install a shunt on J15 and center pin to VCC on J18. Connect the VTI (J10) pin to the CML supply voltage output termination of the previous chip (transmitter). Connect the VTO (J9) pin to the CML supply voltage input termination of the following chip (receiver). Connect a 3.3V power supply on the VCC (J1) pin. Connect the supply ground to GND (J2). Insure that VCC, VTI, and VTO share a common ground. VTI and VTO can be at different voltages. DC-Coupled Operation with Laboratory Equipment This setup allows testing of the MAX3803 with standard lab equipment (BERT, oscilloscope, etc.). Remove shunt on J15; install shunts on J16, J17, and center pin to VCC on J18. Connect VCC (J1) pin to +2.2V power supply. Connect a –1.1V supply to VEE (J11). This setup forces the VTI and VTO voltages to be the same at 1.1V with respect to VEE. The VTI and VTO voltages must remain the same in this configuration, but the level can change by varying VCC and VEE. Insure that the difference between VCC and VEE is between 3.0V and 3.6V. AC-Coupled Operation This setup allows testing of the MAX3803 in ac–coupled operation. Remove shunts on J16 and J17; install shunts on J15 and center pin to VCC on J18. Install external AC-coupling capacitors to IN+ (J3, J4) and OUT+ (J5, J6). Connect VCC (J1), VTI (J10), and VTO (J9) to the same power supply between 3.0V and 3.6V. Connect the ground to GND (J2). Figure 1. MAX3803 EV Kit Schematic 2________________________________________________________________________________ . MAX3803 Evaluation Kit Evaluates: MAX3803 Figure 2. MAX3803 Component Placement Guide Figure 3. MAX3803 PC Board Layout – Component Side _________________________________________________________________________________________ 3 Evaluates: MAX3803 MAX3803 Evaluation Kit Figure 4. MAX3803 PC Board Layout – Ground Plane Figure 5. MAX3803 PC Board Layout – Power Plane 4________________________________________________________________________________ . MAX3803 Evaluation Kit Evaluates: MAX3803 Figure 6. MAX3803 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 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.