MAX9657EVKIT+

19-4462; Rev 0; 2/09 MAX9657 Evaluation Kit The MAX9657 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that evaluates the MAX9657 low-power quad video amplifier with input sync-tip clamps and fixed gain of 2V/V (6dB). It has a bandwidth of 15MHz, making it suitable not only for standard-definition video signals, but also video graphics array (VGA) signals with 640 x 480 resolution at up to 85Hz refresh rate. The EV kit features a shutdown mode to control the device operation. The EV kit operates from a single-supply voltage of 2.7V to 3.6V. The MAX9657 EV kit can also be used to evaluate the MAX9658, which is similar to the MAX9657 except that it has integrated lowpass filters. To evaluate the MAX9658, request a free sample with the MAX9657 EV kit and replace U1 with the pin-compatible MAX9658 IC. Features o 2.7V to 3.6V Single-Supply Operation o AC-Coupled Video Inputs o Shutdown Mode o Standard 75Ω Input/Output Termination o Surface-Mount Components o Lead(Pb)-Free and RoHS Compliant o Fully Assembled and Tested Ordering Information PART TYPE MAX9657EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION C1–C5 C6 C7–C10 QTY 5 1 0 DESIGNATION QTY DESCRIPTION INPUT0–INPUT3, OUTPUT0–OUTPUT3 8 75Ω BNC PCB-mount connectors JU1 1 3-pin header Sullins PEC36SAAN or equivalent Digi-Key S1012E-36-ND R1–R8 8 75Ω ±1% resistors (0603) U1 1 Quad video amplifier (16 QSOP) Maxim MAX9657AEE+ — 1 Shunt (JU1) — 1 PCB: MAX9657 Evaluation Kit+ DESCRIPTION 0.1µF ±10%, 25V X7R ceramic capacitors (0603) TDK C1608X7R1E104K Murata GRM188R71C104K 10µF ±20%, 6.3V X5R ceramic capacitor (0805) TDK C2012X5R0J106M Taiyo Yuden JMK212BJ106MG Not installed, aluminum electrolytic capacitors (10mm x 7.7mm) Component Suppliers SUPPLIER Digi-Key Corp. PHONE WEBSITE 800-344-4539 www.digikey.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Sullins Electronics Corp. 760-744-0125 www.sullinselectronics.com Taiyo Yuden 800-348-2496 www.t-yuden.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX9657 when contacting these component suppliers. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 Evaluates: MAX9657/MAX9658 General Description Evaluates: MAX9657/MAX9658 MAX9657 Evaluation Kit Quick Start Detailed Description of Hardware Recommended Equipment • 2.7V to 3.6V DC power supply (VDD) • Four composite video signal generators • Video measurement equipment (e.g., Tektronix VM700T or equivalent) Procedure The MAX9657 EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on power supplies until all connections are completed. 1) Verify that a shunt is installed across pins 1-2 of jumper JU1 (EV kit enabled). 2) Connect the positive terminal of the DC power supply to the VDD pad on the EV kit. Connect the ground terminal of the DC power supply to the GND pad. 3) Connect the composite video test signals from the video signal generators to the INPUT0–INPUT3 BNC connectors. 4) Connect the output signals from the OUPUT0– OUPUT3 BNC connectors to the inputs of the video measurement equipment. 5) Turn on the power supply and turn on the signal generator. Input Each video input signal of the MAX9657 EV kit is configured for AC-coupling. The EV kit provides each input with an AC-coupling 0.1µF capacitor and a termination resistor. A sync-tip clamp at each input provides bias for the incoming video signal. The sync-tip voltage is internally set to 300mV. Output The video output amplifiers can both source and sink load current, allowing output loads to be DC- or ACcoupled. The amplifier output stage needs approximately 300mV of headroom from either supply rail. The devices have an internal level-shift circuit that positions the sync tip at approximately 300mV at the output. If the supply voltage is greater than 3.135V (5% below a 3.3V supply), each amplifier can drive two DC-coupled video loads to ground. If the supply is less than 3.135V, each amplifier can drive only one DC-coupled or ACcoupled video load. The MAX9657 EV kit comes with DC-coupled outputs, but can also be configured for AC-coupled outputs. To configure the EV kit for AC-coupled outputs, cut the short traces across C7–C10 and install 220µF or greater AC-coupling output capacitors. Refer to the Applications Information, AC-Coupling the Outputs section in the MAX9657 IC data sheet for more information. 6) Verify the output signals. Jumper Selection Shutdown Mode (SHDN) The MAX9657 EV kit features an option to shut down all the video outputs on the EV kit. For normal operation, connect SHDN to VDD by placing a shunt across pins 1-2 of jumper JU1. For low-power shutdown mode, connect SHDN to GND by placing a shunt across pins 2-3 of jumper JU1. Table 1 lists the selectable jumper options. Table 1. Jumper JU1 Functions (SHDN) SHUNT POSITION SHDN PIN DEVICE MODE 1-2* Connected to VDD Normal operation 2-3 Connected to GND Shutdown mode *Default position. 2 _______________________________________________________________________________________ MAX9657 Evaluation Kit Evaluates: MAX9657/MAX9658 Figure 1. MAX9657 EV Kit Schematic _______________________________________________________________________________________ 3 Evaluates: MAX9657/MAX9658 MAX9657 Evaluation Kit Figure 2. MAX9657 EV Kit Component Placement Guide—Component Side 4 _______________________________________________________________________________________ MAX9657 Evaluation Kit Evaluates: MAX9657/MAX9658 Figure 3. MAX9657 EV Kit Component PCB Layout—Component Side _______________________________________________________________________________________ 5 Evaluates: MAX9657/MAX9658 MAX9657 Evaluation Kit Figure 4. MAX9657 EV Kit PCB 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. 6 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products SPRINGER Maxim is a registered trademark of Maxim Integrated Products, Inc.