19-1063; Rev 0; 4/96 MAX4103 Evaluation Kit The MAX4103 evaluation kit (EV kit) simplifies evaluation of the MAX4103 high-speed, low-power, broadcast-quality video amplifier. The EV kit circuit demonstrates the MAX4103 in the noninverting configuration, set to a gain of 2V/V. The EV kit comes with the MAX4103 installed, but it can also be used to evaluate the MAX4102. Simply order a MAX4102 free sample, replace the MAX4103 with the MAX4102 on the EV board, and change the gainsetting resistors for the desired gain. ____________________________Features ♦ 180MHz -3dB Bandwidth ♦ Optional Adjustable Gain ♦ Fully Assembled and Tested ______________Ordering Information ____________________Component List DESIGNATION QTY DESCRIPTION PART MAX4103EVKIT-SO TEMP. RANGE +25°C BOARD TYPE Surface Mount Note: To evaluate the MAX4102, request a MAX4102ESA free sample. U1 1 MAX4103ESA C1, C2 2 0.1µF, 10% ceramic capacitors Vitramon VJ1206Y104KXX C3, C4 2 10µF, 10V, 20% tantalum capacitors AVX TAJB106M010 or Sprague 293D106X0010B R1, R2 2 75Ω, 5% resistors RF, RG 2 390Ω, 5% resistors IN, OUT 2 SMA connectors _________________________Quick Start None 1 MAX4102/MAX4103 data sheet The MAX4103 EV kit is fully assembled and tested. Follow these steps to verify board operation. 1) The circuit requires supply voltages of ±5V. Connect these supplies to the corresponding pads marked VCC and VEE. Connect the power-supply ground to the pad marked GND. 2) Connect the output marked OUT to an oscilloscope through a terminated 75Ω cable. 3) Turn on the power supplies. ______________Component Suppliers SUPPLIER AVX Sprague Vishay/Vitramon PHONE (803) 946-0690 (603) 224-1961 (203) 268-6261 FAX (803) 626-3123 (603) 224-1430 (203) 452-5670 4) Apply a signal of ±1.7Vpk maximum to the SMA connector marked IN. 5) Verify the output signal on the oscilloscope. ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 Evaluates: MAX4102/MAX4103 _______________General Description Evaluates: MAX4102/MAX4103 MAX4103 Evaluation Kit _______________Detailed Description capacitors C1 and C2 have been placed as close to the MAX4103 supply pins as possible. The unused pins have been grounded to prevent unwanted noise from coupling into the circuit. Voltage-Gain Adjustment The MAX4103 gain can be adjusted with minor modifications to the evaluation board. To reduce harmonic distortion, the input connector (IN), input termination resistor (R1), and gain-setting resistor (RG) meet the PC board ground plane at a single point. As a result, input current (through R1) and feedback current (through RG) will flow back to the source rather than mix with the output current and cause distortion. Refer to the Grounding, Bypassing, and PC Board Layout section of the MAX4102/MAX4103 data sheet for more information. 1) Referring to the section Choosing Resistor Values in the MAX4102/MAX4103 data sheet, select the feedback (R F) and gain-setting (R G) resistors for the desired gain. 2) Install RF and RG. Layout Considerations The MAX4103 EV kit layout has been optimized for high-speed signals, with careful attention given to grounding, power-supply bypassing, and signal-path layout. The small, surface-mount, ceramic bypass VCC C4 10µF, 10V C3 10µF, 10V C1 0.1µF C2 0.1µF VEE GND IN 4 3 7 MAX4103 2 RG 390Ω OUT U1 R1 75Ω 5 8 R2 75Ω 1 RF 390Ω Figure 1. MAX4103 EV Kit Schematic 2 _______________________________________________________________________________________ MAX4103 Evaluation Kit Evaluates: MAX4102/MAX4103 Figure 2. MAX4103 EV Kit Component Placement Guide— Component Side Figure 3. MAX4103 EV Kit Component Placement Guide— Solder Side _______________________________________________________________________________________ 3 Evaluates: MAX4102/MAX4103 MAX4103 Evaluation Kit Figure 4. MAX4103 EV Kit PC Board Layout—Component Side Figure 5. MAX4103 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. 4 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1996 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.