MAX11508EVKIT+

19-4409; Rev 0; 1/09 MAX11508 Evaluation Kit The MAX11508 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that contains a MAX11508 IC. The MAX11508 is a 3-channel video filter and buffer. The 3-channel filter bandwidths are selectable to accept high-definition television (HDTV), progressive-scan (PS), standard-definition television (SDTV), or bypassed for 1080p or high bandwidth RGB signals. Each channel includes a transparent input clamp and a +6dB output buffer capable of driving 2VP-P into a standard 150Ω load. The video input and output signals on the EV kit can be AC- or DC-coupled. The MAX11508 video input terminals are terminated at 75Ω, and the output terminals are 75Ω back terminated. The EV kit operates from a single 5V DC power supply. The EV kit can also evaluate the MAX11509. The MAX11508 EV kit is shipped with a MAX11508 IC installed. To evaluate the MAX11509, contact the factory to request free samples of the pincompatible MAX11509 IC. Features o Single 5V Supply Operation o Transparent Input Clamp o Output Buffer Drives 150Ω Standard Video Loads with a +6dB Gain o Selectable Video Filter for High-Definition/ Progressive-Scan/Standard-Definition Television o Bypass Feature for High Bandwidth Signals o AC- or DC-Coupled Inputs and Outputs o Standard 75Ω Input/Output Terminations o Surface-Mount Components o Lead(Pb)-Free and RoHS Compliant o Fully Assembled and Tested Ordering Information PART TYPE MAX11508EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY C1 1 1µF ±10%, 16V X7R, ceramic capacitor (0603) Murata GRM188R71C105K 4 0.1µF ±10%, 16V X7R ceramic capacitors (0603) Murata GRM188R71C104K 3 220µF ±20%, 6.3V OS-CON capacitors (8mm x 6.9mm) SANYO 6SVPA220MAA C2–C5 C6, C7, C8 DESCRIPTION C9, C10 0 Not installed, capacitors (0603) GND (x2) 2 PC mini black test points JU1–JU11 11 2-pin headers PB/B_IN, PB/B_OUT, PR/R_IN, PR/R_OUT Y/G_IN, Y/G_OUT 6 DESIGNATION QTY PB/BIN, PB/BOUT, PR/RIN, PR/ROUT, Y/GIN, Y/GOUT 6 DESCRIPTION 75Ω BNC PCB-mount connectors R1–R6 6 75Ω ±1% resistors (0603) R7 1 820kΩ ±5% resistor (0603) R8 1 120kΩ ±5% resistor (0603) R9–R12 4 100kΩ ±5% resistors (0603) U1 1 Video filter and buffer (14 TSSOP) Maxim MAX11508UUD+ — 11 Shunts — 1 PCB: MAX11508 Evaluation Kit+ PC mini red test points ________________________________________________________________ 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: MAX11508/MAX11509 General Description Evaluates: MAX11508/MAX11509 MAX11508 Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com SANYO Electric Co., Ltd. 619-661-6835 www.sanyodevice.com Note: Indicate that you are using the MAX11508 when contacting these component suppliers. Quick Start Required Equipment JUMPER SHUNT POSITION Video signal generator (e.g., Tektronix TG-2000 or similar) JU1 Not installed JU2 Not installed An appropriate video measurement equipment JU3 Installed JU4 Installed JU5, JU6, JU7 Not installed AC-coupled inputs JU8, JU9, JU10 Not installed AC-coupled outputs JU11 Not installed Y/GIN is not DC biased • 5V, 150mA DC power supply (VCC) • • Table 1. Jumper Function (JU1–JU11) Procedure The MAX11508 EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. 1) Verify that shunts are installed on the default position of all the jumpers listed in Table 1. 2) Connect the output of the video signal generator to the Y/GIN BNC connector on the MAX11508 EV kit. 3) Connect the Y/GOUT BNC connector on the EV kit to the input of the video measurement equipment. 4) Connect the power-supply ground to the GND pad on the EV kit. 5) Connect the 5V supply to the VCC pad on the EV kit. 6) Set the video signal generator for the desired video input signal. Since the input is AC-coupled and not biased, the signal should be a unipolar signal such as R, G, B, or Y. 7) Turn on the power supply and enable the video signal generator. 8) Analyze the video output signal. EV KIT FUNCTION Device enabled HD filter selected PB/BIN and PR/RIN bias enabled Detailed Description of Hardware The MAX11508 EV kit is a fully assembled and tested surface-mount circuit board that contains a MAX11508 IC. The MAX11508 is a 3-channel video filter and buffer. The MAX11508 EV kit has three input channels to accept a full set of component video input signals. The MAX11508 filter bandwidths are selectable to accept four different operational modes: SD, PS, HD, or bypassed for 1080p or high bandwidth RGB signals. Each channel includes a transparent input clamp and a +6dB output buffer capable of driving 2VP-P into a standard 150Ω load. All the input and output signals on the MAX11508 EV kit can be configured for AC- or DC-coupling. The EV kit’s input terminals are 75Ω terminated, and the video output terminals are each back terminated with 75Ω. MAX11509 Evaluation The MAX11508 EV kit can also evaluate the MAX11509 IC. To evaluate the MAX11509, replace MAX11508 IC U1 with the MAX11509. Refer to the MAX11508/MAX11509 IC data sheet for additional information. 2 _______________________________________________________________________________________ MAX11508 Evaluation Kit Power-Down (SHDN) The MAX11508 EV kit provides an option to shut down the MAX11508 IC. Jumper JU1 selects the shutdown or the normal operation mode for the MAX11508 EV kit. See Table 2 for shunt positions. Table 4. JU11 Jumper Selection (Y/GIN) SHUNT POSITION Installed Y/G_IN PIN INPUT BIAS Y/GIN CHANNEL DC BIAS LEVEL External bias DC bias enabled for channel 1 to accept bipolar signals such as Pb and Pr Table 2. JU1 Jumper Selection (SHDN) SHUNT POSITION MAX11508 SHDN PIN CONNECTED TO EV KIT OPERATION Installed GND Shutdown Not installed* VCC through resistor R9 Normal operation *Default position. Video Filter Bandwidth and Modes (HD/PS/SD/BP) The MAX11508 EV kit provides an option to select the video filter bandwidths for the MAX11508. Jumpers JU2 and JU3 select the video filter bandwidths on the MAX11508 EV kit. See Table 3 for shunt positions. Table 3. JU2, JU3 Jumper Selection (HD/PS/SD/BP) SHUNT POSITION JU2 (FSEL1) JU3 (FSEL0) FILTER BANDWIDTH (MHz) Installed 9 SD Installed Not installed 16 PS Not installed* Installed* 33 HD Not installed 60 No external bias *Default position. Biasing the Channel 2 (PB/BIN) and Channel 3 (PR/RIN) Inputs The MAX11508 features transparent clamps on the PB/B_IN and PR/R_IN pins to provide the correct bias level for unipolar signals such as R, G, B, and Y. When bipolar signals such as Pb and Pr are used, an internal bias generator is used to set the correct bias level. The bias generator is enabled by pulling the BIAS pin low using jumper JU4. See Table 5 for the jumper positions. Table 5. JU4 Jumper Selection (BIAS) MAX11508 EV KIT OPERATION MODE Installed Not installed Not installed* Transparent clamp enabled for channel 1 to accept unipolar signals such as R, G, B, and Y SHUNT POSITION MAX11508 BIAS PIN CONNECTED TO PB/B_IN AND PR/R_IN PINS INPUT BIAS PB/BIN AND PR/RIN CHANNELS DC BIAS LEVEL GND Bias enabled, clamp disabled DC bias enabled for channels 2 and 3 to accept bipolar signals such as Pb and Pr Bias disabled, clamp enabled DC bias disabled for channels 2 and 3 to accept unipolar signals such as R, G, B, and Y BP Installed* *Default position. Biasing the Channel 1 (Y/GIN) Input When configuring the channel 1 input for AC-coupled operation, the correct DC bias point has to be chosen, depending on the input signals. The MAX11508 features an internal transparent clamp to provide the correct bias level for unipolar signals such as R, G, B, and Y on channel 1 (Y/GIN). The MAX11508 channel 1 (Y/G_IN) internal transparent clamp is enabled when no external bias is connected to the Y/G_IN pin (see Table 4). If the unipolar signals exceed the voltage defined in the MAX11508/MAX11509 IC data sheet, AC-coupling is recommended. For bipolar signals such as Pb and Pr on channel 1 (Y/GIN), AC-coupling is recommended, and an external biasing circuit is provided on the EV kit (see Table 4). Not installed VCC through resistor R12 *Default position. _______________________________________________________________________________________ 3 Evaluates: MAX11508/MAX11509 Jumper Selection Evaluates: MAX11508/MAX11509 MAX11508 Evaluation Kit Input Coupling (Y/GIN, PB/BIN, PR/RIN) The MAX11508 IC features a transparent clamp at the video inputs that allows either AC- or DC-coupling. If the input signal remains above ground, the transparent clamp is inactive, offering true DC input coupling. If the signal drops below ground, the inputs must be ACcoupled. The transparent clamp sets the video sync tip just below ground. The MAX11508 EV kit provides an option to configure the MAX11508 inputs to AC- or DC-coupling. Jumpers JU5, JU6, and JU7 configure the input coupling for the MAX11508 EV kit. See Table 6 for shunt positions. Table 6. JU5, JU6, JU7 Jumper Selection (Y/GIN, PB/BIN, PR/RIN) SHUNT POSITION Y/GIN, PB/BIN, PR/RIN COUPLING CONFIGURATION Installed DC-coupling Not installed* AC-coupling Output Coupling (Y/GOUT, PB/BOUT, PR/ROUT) The MAX11508 EV kit provides an option to configure the MAX11508 outputs to AC- or DC-coupling. Jumpers JU8, JU9, and JU10 configure the output coupling for the MAX11508 EV kit. See Table 7 for shunt positions. Table 7. JU8, JU9, JU10 Jumper Selection (Y/GOUT, PB/BOUT, PR/ROUT) SHUNT POSITION Y/GOUT, PB/BOUT, PR/ROUT COUPLING CONFIGURATION Installed DC-coupling Not installed* AC-coupling *Default position. *Default position. 4 _______________________________________________________________________________________ MAX11508 Evaluation Kit Evaluates: MAX11508/MAX11509 Figure 1. MAX11508 EV Kit Schematic _______________________________________________________________________________________ 5 Evaluates: MAX11508/MAX11509 MAX11508 Evaluation Kit Figure 2. MAX11508 EV Kit Component Placement Guide—Component Side 6 _______________________________________________________________________________________ MAX11508 Evaluation Kit Evaluates: MAX11508/MAX11509 Figure 3. MAX11508 EV Kit PCB Layout—Component Side _______________________________________________________________________________________ 7 Evaluates: MAX11508/MAX11509 MAX11508 Evaluation Kit Figure 4. MAX11508 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. 8 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products SPRINGER is a registered trademark of Maxim Integrated Products, Inc.