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MAX11504EVKIT

MAX11504 Evaluation Kit

Maxim Integrated 

MAX11504 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)

• Video measurement equipment (e.g., Tektronix

VM700T or similar)

Procedure

The MAX11504 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–JU4 (AC-coupled inputs).

2) Verify that no shunts are installed across jumpers

JU5–JU8 (no DC bias input).

3) Verify that no shunts are installed across jumpers

JU9, JU10, JU11 (one video load).

4) Verify that no shunts are installed across jumpers

JU12–JU16 (AC-coupled outputs).

5) Connect the output of the video signal generator to

the IN_1 BNC connector on the MAX11504 EV kit.

6) Connect the OUT_1A BNC connector on the EV kit

to the input of the video measurement equipment.

7) Connect the power-supply ground to the GND pad

on the EV kit.

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 of Hardware

The MAX11504 EV kit is a fully assembled and tested

surface-mount PCB that contains a MAX11504 IC. The

MAX11504 is a four-channel video reconstruction filter

and buffer for SDTV applications. The MAX11504 filter

typically has 3dB attenuation at 8.6MHz and 50dB

attenuation at 27MHz. The device includes a +6dB out-

put buffer capable of driving a 2VP-P video signal into

two standard 150Ω loads.

The MAX11504 EV kit has four input channels to accept

composite and component video input signals. Each

output from the MAX11504 EV kit is capable of driving a

75Ω load to ground. This is equivalent to driving two

sets of 150Ω loads in parallel to ground.

All the input and output signals on the MAX11504 EV kit

can be configured for AC- or DC-coupling. The EV kit’s

input terminals are 75Ω terminated and the video out-

put terminals are each back terminated with 75Ω.

MAX11505 Evaluation

The MAX11504 EV kit can also evaluate the MAX11505

IC. To evaluate the MAX11505, replace the IC (U1) with

the MAX11505 IC. Refer to the MAX11505 IC data

sheet for additional information.

Jumper Selection

Input Coupling

The MAX11504 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 will set the sync tip just below ground.

The MAX11504 EV kit provides an option to configure

the MAX11504 inputs to AC- or DC-coupling. Jumpers

JU1–JU4 configure the input coupling for the

MAX11504 EV kit. See Table 1 for shunt positions.

Table 1. JU1–JU4 Jumper Selection

SHUNT POSITION

Installed

Not installed*

*Default position.

COUPLING

CONFIGURATION

DC-coupling

AC-coupling

2 _______________________________________________________________________________________

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