Evaluates: MAX4310/MAX4313 19-1379 Rev 1 4/99 MAX4313 Evaluation Kit General Description Features The MAX4313 evaluation kit (EV kit) simplifies evalua- Single-Supply Operation tion of the MAX4313 low-power, single-supply video 150MHz -3dB Bandwidth (R = 150) L multiplexer/amplifier. The MAX4313 is fixed to a gain of +2V/V, ideal for driving back-terminated cables. SMA 540V/s Slew Rate (R = 150) L connectors and 50 terminating resistors are included 40MHz 0.1dB Gain Flatness (R = 150) L for 50 test equipment compatibility. Simply change the terminating resistors to 75 for video test equip- Low Switching Transient (20mVp-p) ment compatibility. 0.06%/0.02 Gain/Phase Errors The EV kit comes with the MAX4313 installed. To evaluate the MAX4310, simply order a free sample (MAX4310ESA), Outputs Extend to the Rails replace the MAX4313 with the MAX4310 on the EV board, Fully Assembled and Tested Surface-Mount Board and change the gain-setting resistors for the desired gain. Component List Ordering Information DESIGNATION QTY DESCRIPTION PART TEMP. RANGE IC PACKAGE C1, C3 2 0.1F, 10% ceramic capacitors MAX4313EVKIT -40C to +85C 8 SO Note: To evaluate the MAX4310, request a MAX4310ESA free 10F, 10V, 20% tantalum capacitors sample. C2, C4 2 AVX TAJB106M010 or Sprague 293D106X0010B R1R3 3 49.9, 1% resistors Quick Start R 1 0 resistor G The MAX4313 EV kit is fully assembled and tested. Fol- R 0 Not installed F low these steps to verify board operation. IN0, IN1, OUT 3 SMA connectors 1) The circuit requires supply voltages of +4.5V to JU1, JU2 2 3-pin headers +10.5V. For evaluation purposes, connect a +5V U1 1 MAX4313ESA supply to the pad labeled VCC and connect the None 2 Shunts for JU1, JU2 power-supply ground to the pads labeled VEE and GND. None 1 MAX4313 EV kit PC board 2) Connect the output labeled OUT to an oscilloscope input. Set the shunt across the appropriate pins of jumper JU1 to select a multiplexer input (IN0 or Component Suppliers IN1). SUPPLIER PHONE FAX 3) Place the shunt across pins 2 and 3 of jumper JU2 to enable the MAX4313s output. AVX 803-946-0690 803-626-3123 Sprague 603-224-1961 603-224-1430 4) Turn on the power supply. Apply a 0.5V signal with V = +1.5V to the appropriate multiplexer CM Note: Please indicate that you are using the MAX4313 when input selected in Step 2. The 100 load (chosen for contacting these component suppliers. ease of evaluation) limits the output voltage range. Wider output voltage swings are achievable with lighter loads. See the MAX4310/MAX4313 data sheet. 5) Verify the output signal on the oscilloscope. Maxim Integrated Products 1 For free samples & the latest literature: MAX4313 Evaluation Kit Detailed Description Table 1. Jumper Selection Setting the Voltage Gain (MAX4310) JUMPER JUMPER FUNCTION POSITION The gain of the MAX4310s amplifier can be set by changing the feedback (R ) and gain-set (R ) resis- F G 12 Select IN1. tors. Refer to the MAX4310/MAX4313 data sheet for 23 Select IN0. recommended values. JU1 Drive pad A0 with Open Control of Digital Inputs (A0, SHDN) external signal. Jumpers JU1 and JU2 provide the user with manual 12 Disable output. control of the multiplexer input address (A0) and shut- 23 Enable output. down (SHDN), respectively (Table 1). An external con- JU2 troller may also be used on either input by connecting Drive pad SHDN with Open the controller to the appropriate pad and removing the external signal. shunt from JU1 or JU2. The MAX4313s A0 and SHDN pins should not be left floating. For a single +5V sup- path layout. The small, surface-mount, ceramic bypass ply, A0 and SHDN are CMOS-logic compatible. The capacitors (C1, C3) have been placed as close as pos- logic-high threshold is V - 1.2V, and the logic-low CC sible to the amplifiers supply pins. The ground plane threshold is V - 2.8V. CC has been removed around and under the amplifier to reduce stray capacitance. Capacitance at the feedback Layout Considerations pin has been minimized by using 0805-size feedback The PC board layout has been optimized for high-speed and gain-set resistors and by removing the adjacent signals and low distortion, with careful attention given ground plane. to grounding, power-supply bypassing, and signal- VCC VEE C2 C4 C3 C1 10F 36 10F 0.1F 0.1F 10V 10V V V CC EE U1 V CC IN0 ENABLE 4 IN0 3 SHDN MAX4313 SHDN 2 JU2 2 R1 1 DISABLE 49.9 OUT R3 MUX 8 OUT IN1 49.9 IN1 5 500 R * F R2 OPEN 49.9 500 V CC A0 GND IN1 1 A0 1 7 JU1 2 3 IN0 R * G 0 * REQUIRED FOR MAX4310 Figure 1. MAX4313 EV Kit Schematic 2 Evaluates: MAX4310/MAX4313