MAX11501EVKIT+

19-0980; Rev 0; 9/07 MAX11501 Evaluation Kit The MAX11501 evaluation kit (EV kit) is a fully assembled and tested surface-mount printed-circuit board (PCB) that contains a MAX11501 IC. The MAX11501 is a triple video filter and buffer for standard-definition television (SDTV) applications. The filter’s passband is typically 8.6MHz. The MAX11501 includes a +6dB output buffer capable of driving 2VP-P into two standard 150Ω loads. The video input and output signals on the EV kit can be AC- or DC-coupled. The MAX11501 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 MAX11501 EV kit can also evaluate the MAX11502 IC. Request a free sample from the factory when ordering the MAX11501 EV kit. Features ♦ Single 5V Supply Operation ♦ Output Buffer Drives Two 150Ω Standard Video Loads with a +6dB Gain ♦ Standard-Definition Television Video Filter ♦ AC- or DC-Coupled Inputs and Outputs ♦ Standard 75Ω Input/Output Terminations ♦ Also Evaluates the MAX11502 (after IC replacement) ♦ Surface-Mount Components ♦ Fully Assembled and Tested Ordering Information PART TYPE MAX11501EVKIT+ +Denotes lead-free and RoHS-compliant. EV Kit Component List DESIGNATION QTY DESCRIPTION C1 1 1µF ±10%, 16V X7R ceramic capacitor (0603) Murata GRM188R71C105K C2–C5 4 0.1µF ±10%, 16V X7R ceramic capacitors (0603) Murata GRM188R71C104K 4 220µF ±20%, 6.3V OS-CON capacitors (8mm x 6.9mm) SANYO 6SVPA220MAA C6–C9 JU1–JU12 12 2-pin headers R1–R7 7 75Ω ±1% resistors (0603) R8, R9 2 150Ω ±1% resistors (0603) R10, R11, R12 3 820kΩ ±5% resistors (0603) R13, R14, R15 3 120kΩ ±5% resistors (0603) DESIGNATION QTY DESCRIPTION U1 1 Maxim low-cost, 3-channel, standard-definition video filter MAX11501USA+ (8-pin SO) CIN, COUT, CVBSIN, CVBSOUT1, CVBSOUT2, YIN, YOUT 7 75Ω BNC PCB mount connectors GND 2 Black PC mini test points IN1, IN2, IN3, OUT1, OUT2, OUT3 6 Red PC mini test points — 12 Shunts — 1 PCB: MAX11501 Evaluation Kit+ Component Suppliers SUPPLIER PHONE WEBSITE Murata Mfg. Co., Ltd. 770-436-1300 www.murata.com SANYO NA Corp. 619-661-6835 www.sanyodevice.com Note: Indicate that you are using the MAX11501 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: MAX11501/MAX11502 General Description Evaluates: MAX11501/MAX11502 MAX11501 Evaluation Kit Quick Start Recommended Equipment Before beginning, the following equipment is needed: • 5V, 150mA DC power supply (VCC) • Video signal generator (e.g., Tektronix TG-2000 or similar) • The appropriate video measurement equipment The MAX11501 EV kit has three input channels to accept a full set of component video input signals. Each output from the MAX11501 EV kit is capable of driving a 75Ω load. This is equivalent to driving two sets of 150Ω loads in parallel. All the input and output signals on the MAX11501 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. Procedure The MAX11501 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 no shunts are installed across jumpers JU1, JU2, and JU3 (AC-coupled inputs). 2) Verify that no shunts are installed across jumpers JU4–JU7 (AC-coupled outputs). 3) Verify that no shunts are installed across jumpers JU8 and JU9 (normal operating mode). 4) Verify that no shunts are installed across jumpers JU10, JU11, and JU12 (no DC bias input). 5) Connect the output of the video signal generator to the CVBSIN BNC connector on the MAX11501 EV kit. Jumper Selection Input Coupling (CVBSIN, YIN, and CIN) The MAX11501 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 AC-coupled. The transparent clamp sets the sync tip just below ground. The MAX11501 EV kit provides an option to configure the MAX11501 inputs to AC- or DC-coupling. Jumpers JU1, JU2, and JU3 configure the input coupling for the MAX11501 EV kit. See Table 1 for shunt positions. Table 1. JU1, JU2, and JU3 Jumper Selection (CVBSIN, YIN, and CIN) 6) Connect the CVBSOUT1 BNC connector on the EV kit to the input of the video measurement equipment. SHUNT POSITION COUPLING CONFIGURATION Installed DC-coupling 7) Connect the power-supply ground to the GND pad on the EV kit. Not installed* AC-coupling *Default position. 8) Connect the 5V supply to the VCC pad on the EV kit. 9) 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. 10) Turn on the power supply and enable the video signal generator. 11) Analyze the video output signal. Detailed Description The MAX11501 EV kit is a fully assembled and tested surface-mount PCB that contains a MAX11501 IC. The MAX11501 is a triple video filter and buffer for SDTV applications. The MAX11501 filter typically has 3dB attenuation at 8.6MHz and 50dB attenuation at 27MHz. The device includes a +6dB output buffer capable of driving a 2VP-P video signal into two standard 150Ω loads. 2 Output Coupling (CVBSOUT1, CVBSOUT2, YOUT, and COUT) The MAX11501 EV kit provides an option to configure the MAX11501 outputs to AC- or DC-coupling. Jumpers JU4–JU7 configure the output coupling for the MAX11501 EV kit. See Table 2 for shunt positions. Table 2. JU4–JU7 Jumper Selection (CVBSOUT1, CVBSOUT2, YOUT, and COUT) SHUNT POSITION COUPLING CONFIGURATION Installed DC-coupling Not installed* AC-coupling *Default position. _______________________________________________________________________________________ MAX11501 Evaluation Kit The MAX11501 EV kit provides an option to demonstrate the dual-load capability on output channels 2 and 3 of the MAX11501. Jumpers JU8 and JU9 configure channels 2 and 3 output loads, respectively, on the MAX11501 EV kit. See Table 3 for shunt positions. Table 3. JU8 and JU9 Jumper Selection (OUT2 and OUT3) has to be applied after the AC-coupling capacitor to ensure that the clamp never operates. A 590mV DC bias voltage can be applied to the MAX11501 IC inputs by installing shunts across jumpers JU10, JU11, or JU12. To configure the inputs to a different DC bias voltage, replace resistors R13, R14, or R15. Refer to the MAX11501 IC data sheet for the DC bias voltage calculation. See Table 4 for input clamp configuration. Table 4. JU10, JU11, and JU12 Jumper Selection (IN1, IN2, and IN3) SHUNT POSITION OUTPUT LOAD Installed 75Ω* SHUNT POSITION Not installed** 150Ω Installed DC bias enabled (use for bipolar signals) Not installed* DC bias disabled (use for unipolar signals) *YOUT and COUT are terminated with a 75Ω load. **Default position. DC Bias for YPbPr Signals When configuring the EV kit video inputs for AC-coupled operation, the correct DC bias point has to be chosen, depending on the input signal. Unipolar signals, such as R, G, B, and Y, are biased correctly using the MAX11501 internal transparent clamp. If the unipolar signals exceed the voltage defined in the IC data sheet, AC-coupling is recommended. For bipolar signals, such as Pb and Pr, a constant DC bias voltage DC BIAS LEVEL *Default position. MAX11502 Evaluation The MAX11501 EV kit can also evaluate the MAX11502 IC. To evaluate the MAX11502, replace the IC (U1) with the MAX11502 IC. Refer to the MAX11501/MAX11502 IC data sheet for additional information. _______________________________________________________________________________________ 3 Evaluates: MAX11501/MAX11502 Output Channel 2 and Channel 3 Load (OUT2 and OUT3) Evaluates: MAX11501/MAX11502 MAX11501 Evaluation Kit VCC JU4 4 VCC C1 1μF VCC C2 0.1μF 5 GND C3 0.1μF CVBSOUT1 U1 JU5 MAX11501 R10 820kΩ R13 120kΩ 8 1 JU2 C4 0.1μF JU6 CIN 7 YOUT JU8 R15 120kΩ JU12 R8 150Ω 1% IN2 2 VCC C5 0.1μF OUT2 C8 220μF GND YIN JU3 R6 75Ω 1% OUT2 R11 820kΩ JU11 R2 75Ω 1% CVBSOUT2 IN1 VCC R14 120kΩ C7 220μF IN1 CVBSIN R1 75Ω 1% R5 75Ω 1% OUT1 OUT1 JU10 C6 220μF GND VCC JU1 R4 75Ω 1% IN2 GND R7 75Ω 1% OUT3 OUT3 R12 820kΩ 6 JU7 C9 220μF COUT JU9 R9 150Ω 1% IN3 3 IN3 R3 75Ω 1% Figure 1. MAX11501 EV Kit Schematic 4 _______________________________________________________________________________________ MAX11501 Evaluation Kit Evaluates: MAX11501/MAX11502 Figure 2. MAX11501 EV Kit Component Placement Guide—Component Side _______________________________________________________________________________________ 5 Evaluates: MAX11501/MAX11502 MAX11501 Evaluation Kit Figure 3. MAX11501 EV Kit PCB Layout—Component Side 6 _______________________________________________________________________________________ MAX11501 Evaluation Kit Evaluates: MAX11501/MAX11502 Figure 4. MAX11501 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. 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