19-2802; Rev 0; 4/03 MAX7440 Evaluation Kit Features ♦ Selectable Input 75Ω Termination or DAC Termination ♦ Input Buffer Bypass Option ♦ Output Buffer to Drive Cable ♦ Separate Level Shift Settings for Each Channel ♦ Direct-Coupled Input/Direct-Coupled Output ♦ Surface-Mount Construction ♦ Fully Assembled and Tested Ordering Information Component List DESIGNATION QTY C1, C2, C3, C23–C27 8 1µF ±10%, 10V X5R ceramic capacitors (0603) TDK C1608X5R1A105K 18 0.1µF ±10%, 16V X7R ceramic capacitors (0603) Taiyo Yuden EMK107BJ104KA or TDK C1608X7R1C104KT C4–C22 PART DESCRIPTION INPUT1–INPUT6, OUTPUT1–OUTPUT6 12 BNC PC board mount connectors JU1–JU18 18 3-pin headers TEMP RANGE MAX7440EVKIT 0°C to +70°C IC PACKAGE 14 SO Note: To evaluate the other devices MAX7441/MAX7442, please order a free MAX7441ESD/MAX7442ESD sample with the MAX7440EVKIT. Quick Start Recommended Equipment • • Three 5.0VDC power supplies (optionally one) Video signal generator (e.g., Tektronix TG 2000) • Video measurement equipment (e.g., Tektronix VM 700A) JU19–JU35 17 2-pin headers R1–R12 12 75Ω ±1% resistors (0603) R13–R18 6 200Ω ±1% resistors (0603) CHANNEL NO. 162Ω ±1% resistors (0603) 1 CVBS Y or G R19–R24 6 Recommended Channel Assignment ASSIGNMENT R25–R36 12 511Ω ±1% resistors (0805) 2 Pr or R 12 511Ω ±0.1% resistors (0805) IRC PFC-W0805R-03-5110B 3 R37–R48 4 Pb or B R49–R54 6 5.11kΩ ±1% resistors (0805) 5 Y R55–R60 6 5.76kΩ ±1% resistors (0805) 6 C TB1 1 Three-circuit terminal block TB2 1 Six-circuit terminal block U1 1 MAX7440ESD (14-pin SO) U2–U13 12 MAX4390EXT-T (6-pin SC70, Top Mark ABE) None 35 Shunts None 1 MAX7440 PC board The MAX7440 EV kit is a fully assembled and tested surface-mount board. Utilize the following steps to verify the board operation. Do not turn on the power supply until all connections are completed. Evaluating Channel 1 with a GroundReferenced Video Generator 1) Verify that there are shunts across on JU1 (pins 1 and 2), JU2 pins (1 and 2), and JU3 pins (1 and 2). 2) Verify that there are shunts across jumpers JU19 and JU31. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 Evaluates: MAX7440/MAX7441/MAX7442 General Description The MAX7440 evaluation kit (EV kit) is a fully assembled and tested surface-mount board. The MAX7440 EV kit includes the MAX7440, a six-channel reconstruction filter, unity-gain input-level-shift circuits, and output buffers with a gain of 2V/V. The input and output buffers are included to ease the evaluation of the MAX7440, and are not needed in the actual application. The MAX7440 EV kit can be also used to evaluate the MAX7441 and MAX7442. Evaluates: MAX7440/MAX7441/MAX7442 MAX7440 Evaluation Kit Component Suppliers SUPPLIER PHONE FAX WEBSITE IRC 361-992-7900 361-992-3377 www.irctt.com Taiyo Yuden 800-348-2496 847-925-0899 www.t-yuden.com TDK 847-803-6100 847-390-4405 www.component.tdk.com Note: Please indicate that you are using the MAX7440/MAX7441/MAX7442 when contacting these suppliers. 3) Connect the output of the ground-referenced video signal generator to the INPUT1 BNC connector on the EV kit. 4) Connect the input of the ground-referenced video measurement equipment to the OUTPUT1 BNC connector on the EV kit. 5) Connect all grounds of the power supplies together. Connect the power-supply ground to GND. 6) Connect one 5.0V supply to the three-circuit terminal block labeled VCC1. Connect another 5.0V supply to VCC2. 7) Connect the third 5.0V supply to the six-circuit terminal block labeled VB1. 8) Set the video signal generator for the desired video input signal, such as multiburst sweep. 9) Turn on all power supplies, and enable the signal generator. 10)Analyze the output signal with the VM700 video measurement equipment. Note 1: To evaluate the other channel(s), see Tables 1 and 3 for jumper settings. Note 2: VCC1: 5V max VCC2: 5V typ, 10V max VB1–VB6: 5V typ, 10V max Detailed Description Input Level-Shift Circuit The MAX7440 EV kit is designed for evaluating the MAX7440/MAX7441/MAX7442 with ground-referenced video equipment or a DAC output with 200Ω termination. To evaluate the EV kit with ground-referenced video equipment, the input signals need to be level shifted before entering the MAX7440/MAX7441/ MAX7442, since most video generators are bipolar and ground referenced. The input buffer (MAX4390) is used with an external bias voltage as a level shift circuit with a gain of +1V/V. The MAX7440 EV kit provides jumpers JU1, JU4, JU7, JU10, JU15, and JU18 to terminate the input signals with either 75Ω or 200Ω. Table 1 lists jumper settings for the ground-referenced video equipment. To evaluate the EV kit with an input signal coming directly from a video DAC or video encoder output, the level shift circuit needs to be bypassed. Table 2 lists the jumpers’ settings for evaluating with a DAC. Table 1. Jumper Settings for Evaluating with Ground-Referenced Video Equipment 2 CHANNEL TERMINATION JUMPER INPUT1 JU1, pins 1 and 2 JU2, pins 1 and 2 LEVEL SHIFT BYPASS JUMPER JU3, pins 1 and 2 INPUT2 JU4, pins 1 and 2 JU5, pins 1 and 2 JU6, pins 1 and 2 INPUT3 JU7, pins 1 and 2 JU8, pins 1 and 2 JU9, pins 1 and 2 INPUT4 JU10, pins 1 and 2 JU11, pins 1 and 2 JU12, pins 1 and 2 INPUT5 JU13, pins 1 and 2 JU14, pins 1 and 2 JU15, pins 1 and 2 INPUT6 JU16, pins 1 and 2 JU17, pins 1 and 2 JU18, pins 1 and 2 _______________________________________________________________________________________ MAX7440 Evaluation Kit CHANNEL TERMINATION JUMPER LEVEL SHIFT BYPASS JUMPER INPUT1 JU1, pins 2 and 3 JU2, pins 2 and 3 JU3, pins 2 and 3 INPUT2 JU4, pins 2 and 3 JU5, pins 2 and 3 JU6, pins 2 and 3 INPUT3 JU7, pins 2 and 3 JU8, pins 2 and 3 JU9, pins 2 and 3 INPUT4 JU10, pins 2 and 3 JU11, pins 2 and 3 JU12, pins 2 and 3 INPUT5 JU13, pins 2 and 3 JU14, pins 2 and 3 JU15, pins 2 and 3 INPUT6 JU16, pins 2 and 3 JU17, pins 2 and 3 JU18, pins 2 and 3 Note: To emulate a 200Ω DAC source resistor, remove jumpers JU19, JU21, JU23, JU25, JU27, and JU29. The 162Ω resistor added to the standard 75Ω termination equals approximately 200Ω. Bias Voltage An external bias voltage is required in the level shift circuit for every channel. The MAX7440 EV kit provides options to tie each bias voltage to VB1 or to have an individual bias voltage. If the individual bias voltage is desired, remove its respective jumper and connect it to a separate power supply. Table 3 lists the bias voltage settings. Do not set a bias voltage higher than 10V. Table 3. Bias Voltage Settings CHANNEL INPUT2 INPUT3 INPUT4 INPUT5 INPUT6 BIAS VOLTAGE JUMPER BIAS VOLTAGE JU20, installed Connected to VB1 JU20, not installed Connected to VB2 JU22, installed Connected to VB1 JU22, not installed Connected to VB3 JU24, installed Connected to VB1 JU24, not installed Connected to VB4 JU26, installed Connected to VB1 JU26, not installed Connected to VB5 JU28, installed Connected to VB1 JU28, not installed Connected to VB6 Output Buffers The MAX7440/MAX7441/MAX7442 require external buffering to drive a standard 150Ω video load. The MAX7440 EV kit uses the MAX4390 op amp configured to a gain of +2V/V to drive standard video loads. If the output buffer is not needed, remove the shunts from jumpers JU30–JU35. Access the output signals from test points OUT1–OUT6. To alleviate any output clipping, increase VCC2 up to 10V. Since the circuit is DC-coupled and the output buffer has a gain of 2V/V, output clipping can occur if the level shift input circuitry is set incorrectly. This can be resolved by either using different power supplies for the level shift input circuitry, or by increasing VCC2 up to 10V. (Remember to keep VCC1 at 5V.) Evaluating MAX7441/MAX7442 The MAX7440 EV kit can also be used to evaluate the MAX7441/MAX7442. To evaluate the MAX7441/MAX7442, replace the MAX7440ESD with a MAX7441ESD/ MAX7442ESD. _______________________________________________________________________________________ 3 Evaluates: MAX7440/MAX7441/MAX7442 Table 2. Jumper Settings for Evaluating with a DAC Evaluates: MAX7440/MAX7441/MAX7442 MAX7440 Evaluation Kit TB2 TB1 VB1 R1 75Ω 1% C5 0.1µF IN1 INPUT1 1 2 JU1 R19 162Ω 1% JU2 3 R13 200Ω 1% R55 5.76kΩ 1% R25 511Ω 1% 1 2 3 JU19 TERMINAL BLOCK VCC2 C1 1µF C6 0.1µF C4 0.1µF VCC1 TB1-1 GND TB1-2 VB1 C2 1µF C3 1µF TB2-1 VB1 VCC2 VB1 VB2 TB1-3 1 MAX4390 4 2 R26 511Ω 1% 1 2 3 JU3 1 IN1 4 11 VCC GND VB2 TB2-2 VB3 VB3 R2 75Ω 1% TB2-3 INPUT2 1 2 JU4 R20 162Ω 1% JU5 3 R14 200Ω 1% R27 511Ω 1% 1 2 3 JU21 VB3 C9 0.1µF IN3 1 2 JU7 R21 162Ω 1% JU8 3 R15 200Ω 1% 1 2 3 JU23 VB4 C11 0.1µF IN4 1 2 JU10 R22 162Ω 1% 3 R16 200Ω 1% C8 0.1µF 3 OUT2 OUT3 6 OUT4 1 MAX4390 4 2 JU25 JU11 R57 5.76kΩ 1% R29 511Ω 1% R4 75Ω 1% INPUT4 MAX7440 U3 R50 5.11kΩ 1% R28 511Ω 1% 1 2 3 JU6 2 OUT5 IN2 OUT6 14 OUT1 13 VB4 TB2-4 VB5 OUT2 OUT3 10 VB5 OUT4 TB2-5 VB6 9 OUT5 8 JU28 OUT6 4 2 C16 0.1µF 1 1 MAX4390 4 2 3 6 R30 511Ω 1% 1 2 3 JU9 3 IN3 IN6 7 JU18 1 2 3 R36 511Ω 1% MAX4390 4 2 C12 0.1µF C14 0.1µF 1 1 R59 5.76kΩ 1% 3 6 R32 511Ω 1% 1 2 3 JU12 5 IN4 IN5 6 JU15 1 2 3 R34 511Ω 1% R54 5.11kΩ 1% MAX4390 4 2 VB6 R6 75Ω 1% C15 0.1µF 1 2 3 R53 5.11kΩ 1% JU17 IN6 1 2 JU16 INPUT6 3 R18 200Ω 1% VB5 R5 75Ω 1% C13 0.1µF 1 2 3 JU14 Figure 1. MAX7440 EV Kit Schematic (Sheet 1 of 2) 4 R24 162Ω 1% JU29 R33 511Ω 1% U6 C27 1µF TB2-6 R35 511Ω 1% U7 VCC2 6 U5 R52 5.11kΩ 1% C10 0.1µF VCC2 3 R60 5.76kΩ 1% VCC2 6 MAX4390 R58 5.76kΩ 1% R31 511Ω 1% 1 2 3 3 C26 1µF JU26 12 VCC2 U4 R51 5.11kΩ 1% C25 1µF JU24 VB6 R3 75Ω 1% INPUT3 VB4 VCC2 OUT1 C7 0.1µF IN2 R56 5.76kΩ 1% C24 1µF JU22 U1 VB2 C23 1µF JU20 6 U2 R49 5.11kΩ 1% VCC1 VCC1 VCC2 3 TERMINAL BLOCK _______________________________________________________________________________________ R23 162Ω 1% IN5 1 2 3 JU27 R17 200Ω 1% JU13 INPUT5 MAX7440 Evaluation Kit Evaluates: MAX7440/MAX7441/MAX7442 VCC2 OUT1 JU31 OUT1 C17 0.1µF 3 6 U8 R37 511Ω 0.1% 1 MAX4390 4 2 R7 75Ω 1% OUTPUT1 R8 75Ω 1% OUTPUT2 R9 75Ω 1% OUTPUT3 R10 75Ω 1% OUTPUT4 R11 75Ω 1% OUTPUT5 R12 75Ω 1% OUTPUT6 R38 511Ω 0.1% VCC2 OUT2 JU32 OUT2 C18 0.1µF 3 6 U9 R39 511Ω 0.1% 1 MAX4390 4 2 R40 511Ω 0.1% VCC2 OUT3 JU33 OUT3 C19 0.1µF 3 6 U10 R41 511Ω 0.1% 1 MAX4390 4 2 R42 511Ω 0.1% VCC2 OUT4 JU34 OUT4 C20 0.1µF 3 6 U11 R43 511Ω 0.1% 1 MAX4390 4 2 R44 511Ω 0.1% VCC2 OUT5 JU35 OUT5 C21 0.1µF 3 6 U12 R45 511Ω 0.1% 1 MAX4390 4 2 R46 511Ω 0.1% VCC2 OUT6 JU30 OUT6 C22 0.1µF 3 6 U13 R47 511Ω 0.1% 1 MAX4390 4 2 R48 511Ω 0.1% Figure 2. MAX7440 EV Kit Schematic (Sheet 2 of 2) _______________________________________________________________________________________ 5 Evaluates: MAX7440/MAX7441/MAX7442 MAX7440 Evaluation Kit Figure 3. MAX7440 EV Kit Component Placement Guide—Component Side 6 _______________________________________________________________________________________ MAX7440 Evaluation Kit Evaluates: MAX7440/MAX7441/MAX7442 Figure 4. MAX7440 EV Kit PC Board Layout—Component Side _______________________________________________________________________________________ 7 Evaluates: MAX7440/MAX7441/MAX7442 MAX7440 Evaluation Kit Figure 5. MAX7440 EV Kit PC Board Layout—Inner Layer 2 (GND Layer) 8 _______________________________________________________________________________________ MAX7440 Evaluation Kit Evaluates: MAX7440/MAX7441/MAX7442 Figure 6. MAX7440 EV Kit PC Board Layout—Inner Layer 3 (VCC1 and VCC2 Layers) _______________________________________________________________________________________ 9 Evaluates: MAX7440/MAX7441/MAX7442 MAX7440 Evaluation Kit Figure 7. MAX7440 EV Kit PC Board 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. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.