_______________general description 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 gain- setting resistors for the desired gain. ____________________________features ? 180mhz -3db bandwidth ? optional adjustable gain ? fully assembled and tested evaluates: max4102/max4103 max4103 evaluation kit ________________________________________________________________ maxim integrated products 1 19-1063; rev 0; 4/96 part temp. range board type max4103evkit-so +25? surface mount qty description u1 1 max4103esa supplier phone fax avx sprague vishay/vitramon (803) 946-0690 (603) 224-1961 (203) 268-6261 (803) 626-3123 (603) 224-1430 (203) 452-5670 ______________component suppliers designation ____________________component list ______________ordering information for free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 note: to evaluate the max4102, request a max4102esa free sample. c1, c2 2 0.1?, 10% ceramic capacitors vitramon vj1206y104kxx c3, c4 2 10?, 10v, 20% tantalum capacitors avx tajb106m010 or sprague 293d106x0010b r1, r2 2 75 , 5% resistors r f , r g 2 390 , 5% resistors in, out 2 sma connectors none 1 max4102/max4103 data sheet _________________________quick start the max4103 ev kit is fully assembled and tested. follow these steps to verify board operation. 1) the circuit requires supply voltages of ?v. connect these supplies to the corresponding pads marked v cc and v ee . connect the power-supply ground to the pad marked gnd. 2) connect the output marked out to an oscilloscope through a terminated 75 cable. 3) turn on the power supplies. 4) apply a signal of ?.7vpk maximum to the sma con- nector marked in. 5) verify the output signal on the oscilloscope.
max4103 u1 r2
75 w r f
390 w r g
390 w r 1
75 w out v cc gnd in 1 3 2 8 5 7 4 c1
0.1 m f
c2
0.1 m f
c4
10 m f, 10v c3
10 m f, 10v v ee figure 1. max4103 ev kit schematic evaluates: max4102/max4103 max4103 evaluation kit 2 _______________________________________________________________________________________ _______________detailed description voltage-gain adjustment the max4103 gain can be adjusted with minor modifi- cations to the evaluation board. 1) referring to the section choosing resistor values in the max4102/max4103 data sheet, select the feed- back (r f ) and gain-setting (r g ) resistors for the desired gain. 2) install r f and r g . 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 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. to reduce harmonic distortion, the input connector (in), input termination resistor (r1), and gain-setting resistor (r g ) meet the pc board ground plane at a single point. as a result, input current (through r1) and feedback current (through r g ) 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.
evaluates: max4102/max4103 max4103 evaluation kit _______________________________________________________________________________________ 3 figure 2. max4103 ev kit component placement guide component side figure 3. max4103 ev kit component placement guide 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. evaluates: max4102/max4103 max4103 evaluation kit figure 4. max4103 ev kit pc board layout?omponent side figure 5. max4103 ev kit pc board layout?older side
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