for free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 _______________general description the max4100 evaluation kit (ev kit) simplifies evalua- tion of the max4100 high-speed amplifier. the ev kit circuit demonstrates the max4100 in the noninverting unity-gain configuration. rf-style connectors (sma) and 75 terminating resistors are included for video test equipment compatibility. the ev kit comes with the max4100 installed. to evalu- ate the max4101, simply order a free sample (max4101esa), replace the max4100 with the max4101 on the ev board, and change the gain- setting resistors for the desired gain. the minimum closed-loop gain for the max4101 is +2v/v or -1v/v. ____________________________features ? 500mhz unity-gain bandwidth ? optional adjustable gain ? fully assembled and tested _____________________________ quick start the max4100 ev kit is fully assembled and tested. follow these steps to verify board operation. do not turn on the power supply until all connections are completed. 1) the circuit requires supply voltages of ?v. connect these supplies to the corresponding pads marked v+ and v-. connect the power-supply ground to the pad marked gnd. 2) verify that the j1 shunt is across pins 2 and 3 of the 3-pin jumper j1. 3) apply a signal no greater than ?.5v pk (16dbm) to the sma connector marked in. 4) connect the output marked out to an oscilloscope through a terminated 75 cable. 5) turn on the power supply and verify the output signal on the oscilloscope. _______________detailed description voltage-gain adjustment the max4100? gain can be adjusted with the following minor modifications to the ev board: 1) referring to table 1, select the feedback (r f ) and gain-setting (r g ) resistors with the desired gain. 2) install r f and r g . evaluates: max4100/max4101 max4100 evaluation kit ________________________________________________________________ maxim integrated products 1 19-0462; rev 0; 12/95 part temp. range board type MAX4100EVKIT-so +25? surface mount qty description u1 1 c1, c6 2 c2, c5 2 0.1?, 10% ceramic capacitors vitramon vj1206y104kxx c3, c4 2 r1, r2 2 75 , 5% resistors r f 1 in, out 2 none 1 none 1 max4100/max4101 data sheet 1000pf, 10% ceramic capacitors vitramon vj1206y102kxx 10?, 10v, 20% tantalum capacitors avx tajb106m010 or sprague 293d106x0010b maxim max4100esa 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 24 , 5% resistor sma connectors high-frequency-amplifier pc board ____________________component list ______________ordering information note: to evaluate the max4101, request a max4101esa free sample. device gain r f ( ) max4100 1 24 max4101 2 200 r g ( ) open 200 small-signal bandwidth (mhz) 500 210 max4101 5 200 max4101 10 200 51 30 45 20 table 1. gain-setting resistors none 1 shunt j1 1 3-pin jumper
layout considerations the max4100 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 c2?5 have been placed as close to the max4100 supply pins as possible. the unused pins have been grounded to prevent unwanted noise from coupling into the circuit. refer to the layout and power- supply bypassing section of the max4100 data sheet for details. shutdown control the max4100/max4101 ev kit is a standard ev kit used for many of maxim? high-speed op amps. as a result, a shutdown (shdn) function is incorporated on the ev kit, but does not apply to the max4100/ max4101. because the shutdown control is not applic- able to the max4100/max4101, verify that a shunt is connected to pins 2 and 3 of jumper j1. evaluates: max4100/max4101 max4100 evaluation kit 2 _______________________________________________________________________________________ max4100 u1 r1
75 w r2
75 w r g
open r f
24 w c4
1000pf c5
0.1 m f shdn capacitors c1, c3, c4, and c6 are optional. 2j1 v+ 3 1 c3
1000pf c2
0.1 m f c1
10 m f, 10v c6
10 m f, 10v gnd v- v+ in out 1 2 3 4 5 8 6 7 figure 1. max4100 ev kit schematic figure 2. max4100 ev kit component placement guide component side figure 3. max4100 ev kit component placement guide solder side
evaluates: max4100/max4101 max4100 evaluation kit _______________________________________________________________________________________ 3 figure 4. max4100 ev kit pc board layout?omponent side figure 5. max4100 ev kit pc board layout?older side * the inverting gain configuration layouts and schematic are shown for reference only. the pc board supplied does not include the inverting configuration. figure 6. inverting schematic (for pcb layout of figures 7?0)* max4100 u1 r1 r2
r g r f c4
c5
c3
c2
c1
c6
gnd v- v+ in out 1 2 3 4 5 6 7 8
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 1995 maxim integrated products printed usa is a registered trademark of maxim integrated products. evaluates: max4100/max4101 max4100 evaluation kit figure 9. inverting gain configuration, pc board layout component side* figure 10. inverting gain configuration, pc board layout solder side* * the inverting gain configuration layouts and schematic are shown for reference only. the pc board supplied does not include the inverting configuration. figure 7. inverting gain configuration, component placement guide?omponent side* figure 8. inverting gain configuration, component placement guide?older side*
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