MAX7445 Evaluation MAX7445 evaluation kit) fully assembled tested

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MAX7445 Evaluation MAX7445 evaluation kit) fully assembled tested

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19-2993; 10/03
MAX7445 Evaluation
MAX7445 evaluation kit) fully assembled tested surface-mount board. MAX7445 includes MAX7445 4-channel video-reconstruction filter, ideal anti-aliasing digital-to-analog converter (DAC)-smoothing video applications. provides three different output buffer-gain settings. input signal AC-coupled, output signal ACcoupled. operates from single supply. MAX7445 used evaluate MAX7445-MAX7449. Single Power Supply Selectable Input Termination Termination Selectable DC-Output Couple Selectable Output Buffer Gains (MAX7445) Surface-Mount Construction Fully Assembled Tested
Features
Evaluates: MAX7445-MAX7449
Component List
DESIGNATION DESCRIPTION ±20%, 6.3V ceramic capacitor (0603) Taiyo Yuden JMK107BJ105MA equivalent 0.1µF ±10%, ceramic capacitors (0603) Taiyo Yuden EMK107BJ104KA C1608X7R1C104KT equivalent 220µF ±20%, 6.3V aluminum electrolytic capacitors (6.3mm 6.0mm) Sanyo 6CV220AX board mount-jack connector board mount-jack connectors 3-pin headers 2-pin headers resistors (0603) resistors (0603) resistors (0603) resistor (0603) 2-circuit terminal block MAX7445EUD (14-pin TSSOP) Shunts MAX7445 board PART MAX7445EVKIT
Ordering Information
TEMP RANGE +70°C PACKAGE TSSOP-EP*
Exposed pad. Note: evaluate MAX7446-MAX7449, order free sample MAX7446EUD-MAX7449EUD with MAX7445EVKIT.
C2-C6
Quick Start
following equipment recommended: Single 500mA power supply Video signal generator (e.g., Tektronix 2000) Video measurement equipment (e.g., Tektronix 700A)
C7-C10
EXTSYNC IPA-IPD, OPA-OPD JU1-JU7 JU8-JU16 R1-R8 R9-R12 R13-R16 None None
MAX7445 fully assembled tested surface-mount board. Follow steps below verify board operation. turn power supply until connections completed.
Evaluating Channel
Verify that there shunts across jumpers (pins GAIN +6.0dB), (pins SELECT GND), (pins output enabled). Verify that shunt installed across pins jumpers JU1-JU4 termination). Verify that there shunts across jumpers JU8, JU10, JU11, JU12. Verify that remaining jumpers open. Connect output video signal generator connector kit.
Maxim Integrated Products
pricing, delivery, ordering information, please contact Maxim/Dallas Direct! 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
MAX7445 Evaluation Evaluates: MAX7445-MAX7449
Component Suppliers
SUPPLER Sanyo Taiyo Yuden PHONE 619-661-6835 800-348-2496 847-803-6100 619-661-1055 847-925-0899 847-390-4405 WEBSITE www.sanyo.com www.t-yuden.com www.component.tdk.com
Note: Please indicate that using MAX7445-MAX7449 when contacting these suppliers.
Connect connector input video measurement equipment. Connect positive supply 2-circuit terminal block labeled VCC. Connect negative power supply 2-circuit terminal block labeled GND. video signal generator desired videoinput signal (e.g., multiburst sweep). This signal must contain sync information (composite CVBS). Turn power supply, enable signal generator. Analyze output signal with video-measurement equipment.
encoder output, termination resistor board selected changing jumpers JU1-JU4 channels through respectively. typical termination resistor 200. incorporates jumpers control GAIN (JU5), SELECT (JU6), DISABLE (JU7) pins. Tables list jumper functions JU5, JU6, JU7.
Evaluating MAX7446-MAX7449
MAX7445 used evaluate MAX7446-MAX7449. evaluate MAX7446- MAX7449, replace MAX7445EUD with MAX7446EUD-MAX7449EUD, verify that there shunt across pins (GAIN GND). Place shunt across replace with 49.9 resistor when evaluating MAX7449. Connect video measurement equipment OPB, OPC, view output signal. MAX7449 requires external logic signal (H-sync) connected EXTSYNC sync source) turn internal clamp circuits. Table channel assignment, clamp voltage level, sync source.
Detailed Description
Jumper Selection
MAX7445 provides options evaluating MAX7445 with video-signal generator output, current output video DAC/encoder. Table lists jumper settings selecting input from either video generator DAC. When interfacing with video
Table Jumper Functions (JU1-JU4)
SHUNT LOCATION Pins Pins SHUNT LOCATION Pins Pins SHUNT LOCATION Pins Pins SHUNT LOCATION Pins Pins INPUT TERMINATION Undefined
other combinations
Note: emulate source resistor when driving from generator, remove jumpers JU8, JU10, JU11, JU12. resistor added standard terminate equals approximately 200.
Table Functions (GAIN)
SHUNT LOCATION Pins Pins (default) Open (not installed) GAIN Connected Connected Floating MAX7445 OUTPUT BUFFER GAIN (dB) +9.5 +6.0
MAX7445 Evaluation Evaluates: MAX7445-MAX7449
Table Functions (SELECT)
OPERATING MODE SHUNT LOCATION SELECT CHANNEL Pins Connected Pins (default) Connected Open (not installed) Floating CHANNEL ASSIGNMENT CVBS CVBSASYNC CVBS (with sync) CVBSASYNC CLAMP LEVEL SYNC SOURCE Channel Channel Channel Channel Channel Channel Channel Channel Channel Channel Channel Channel
Table Functions (DISABLE)
SHUNT LOCATION Pins Pins (default) Open (not installed) DISABLE Connected Connected Floating MAX7445 OUTPUT Outputs disabled Outputs enabled Undefined
Table MAX7449 Channel Assignment
LABELS IPB, IPC, IPD, CHANNEL ASSIGNMENT CLAMP LEVEL SYNC SOURCE EXTSYNC EXTSYNC EXTSYNC
Note: closed.
Evaluates: MAX7445-MAX7449
TERMINAL BLOCK
MAX7445 Evaluation
Figure MAX7445 Schematic
JU10 OUTB 220µF JU15 OUTC 0.1µF 220µF JU11 0.1µF 0.1µF 220µF JU14 OUTA 0.1µF JU13 0.1µF
MAX7445
JU16 OUTD DISABLE SELECT EXTSYNC 220µF JU12 GAIN
NOTE: RESISTORS UNLESS OTHERWISE SPECIFIED.
MAX7445 Evaluation Evaluates: MAX7445-MAX7449
Figure MAX7445 Component Placement Guide-Top Silkscreen
MAX7445 Evaluation Evaluates: MAX7445-MAX7449
Figure MAX7445 Board Layout-Component Side
MAX7445 Evaluation Evaluates: MAX7445-MAX7449
Figure MAX7445 Board Layout-Solder Side
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 2003 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.

MAX7445 Evaluation MAX7445 evaluation kit) fully assembled tested

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