MAX9541EVKIT+ [MAXIM]

Fully Assembled and Tested;


型号：	MAX9541EVKIT+
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	Fully Assembled and Tested
文件：	总6页 (文件大小：134K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

19-4463; Rev 0; 2/09

MAX9541 Evaluation Kit

Evluates:1/MAX9542

General Description

Features

The MAX9541 evaluation kit (EV kit) is a fully assembled

and tested surface-mount PCB that evaluates the

MAX9541 quadruple-channel, 2:1 video mux amplifiers

with input sync tip clamps and fixed gain of 2V/V (6dB).

The MAX9541 has integrated lowpass filters that are

optimized for standard-definition video signals such as

composite and RGB. The EV kit features a shutdown

mode to control the device operation. The EV kit fea-

tures a channel-select input to select between two stan-

dard-definition video sources that can each have up to

four video signals. The EV kit operates from a single-

supply voltage of 2.7V to 3.6V.

o 2.7V to 3.6V Single-Supply Operation

o AC-Coupled Video Inputs

o Shutdown Mode

o Channel-Select Input

o Standard 75Ω Input/Output Termination

o Surface-Mount Components

o Lead(Pb)-Free and RoHS Compliant

o Fully Assembled and Tested

The MAX9541 EV kit can also be used to evaluate the

MAX9542, which is similar to the MAX9541 except that

it does not have integrated lowpass filters. To evaluate

the MAX9542, request a free sample with the MAX9541

EV kit and replace U1 with the pin-compatible

MAX9542 IC.

Ordering Information

PART

TYPE

MAX9541EVKIT+

EV Kit

+Denotes lead(Pb)-free and RoHS compliant.

Component List

DESIGNATION

QTY

DESCRIPTION

DESIGNATION

QTY

DESCRIPTION

0.1µF 10ꢀ, 25V X7R ceramic

capacitors (0603)

TDK C1608X7R1E104K

Murata GRM188R71C104K

INPUT0A–INPUT3A,

INPUT0B–INPUT3B,

OUTPUT0–OUTPUT3

75Ω BNC PCB-mount

connectors

C1–C8, C10

JU1, JU2

R1–R12

3-pin headers

10µF 20ꢀ, 6.3V X5R ceramic

capacitor (0805)

TDK C2012X5R0J106M

Taiyo Yuden JMK212BJ106MG

12 75Ω 1ꢀ resistors (0603)

Quadruple 2:1 mux amplifiers

(16 QSOP)

Maxim MAX9541AEE+

Not installed, aluminum

electrolytic capacitors

(10mm x 7.7mm)

—

Shunts (JU1, JU2)

C11–C14

PCB: MAX9541 Evaluation Kit+

Component Suppliers

SUPPLIER

PHONE

WEBSITE

www.murata-northamerica.com

www.t-yuden.com

Murata Electronics North America, Inc.

Taiyo Yuden

770-436-1300

800-348-2496

847-803-6100

www.component.tdk.co

TDK Corp.

Note: Indicate that you are using the MAX9541 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.

MAX9541 Evaluation Kit

the sync tip at approximately 300mV at the output. If

the supply voltage is greater than 3.135V (5ꢀ below a

3.3V supply), each amplifier can drive two DC-coupled

video loads to ground. If the supply is less than 3.135V,

each amplifier can drive only one DC-coupled or AC-cou-

pled video load.

Quick Start

Recommended Equipment

• 2.7V to 3.6V DC power supply (VDD)

• Four composite video signal generators

• Video measurement equipment (e.g., Tektronix

VM700T or equivalent)

The MAX9541 EV kit comes with DC-coupled outputs,

but can also be configured for AC-coupled outputs. To

configure the EV kit for AC-coupled outputs, cut the short

traces across C11–C14 and install 220µF or greater AC-

coupling output capacitors. Refer to the Applications

Information, AC-Coupling the Outputs section of the

MAX9541/MAX9542 IC data sheet for more information.

Procedure

The MAX9541 EV kit is fully assembled and tested.

Follow the steps below to verify board operation.

Caution: Do not turn on power supplies until all

connections are completed.

1) Verify that a shunt is installed across pins 1-2 of

jumper JU1 (EV kit enabled).

Jumper Selection

Shutdown Mode (SHDN)

The MAX9541 EV kit features an option to shut down all

the video outputs on the EV kit. For normal operation,

connect SHDN to VDD by placing a shunt across pins

1-2 of jumper JU1. For low-power shutdown mode, con-

nect SHDN to GND by placing a shunt across pins 2-3 of

jumper JU1. Table 1 lists the selectable jumper options.

2) Verify that a shunt is installed across pins 2-3 of

jumper JU2 (Video Input A selected).

3) Connect the positive terminal of the DC power sup-

ply to the VDD pad on the EV kit. Connect the

ground terminal of the DC power supply to the

GND pad.

4) Connect the composite video test signals from the

video signal generators to the INPUT0A–INPUT3A

BNC connectors.

Channel-Select Input (A/B)

The MAX9541 EV kit features 3-pin jumper JU2 to con-

trol the channel-select input A/B, which selects

between two standard-definition video sources. To

select Video Input A (INPUT0A–INPUT3A) as the video

source, connect A/B to GND by placing a shunt across

pins 2-3 of jumper JU2. To select Video Input B

(INPUT0B–INPUT3B) as the video source, connect A/B

to VDD by placing a shunt across pins 1-2 of jumper

JU2. Table 2 lists the selectable jumper options.

5) Connect the output signals from the OUTPUT0–

OUTPUT3 BNC connectors to the inputs of the

video measurement equipment.

6) Turn on the power supply and turn on the signal

generators.

Evluates:1/MAX9542

7) Verify the output signals.

8) Reconfigure the composite video cable connec-

tions as required to test the Video Input B source.

See Table 2 for the channel-select input.

Table 1. Jumper JU1 Functions (SHDN)

SHUNT

POSITION

Detailed Description of Hardware

SHDN PIN

DEVICE MODE

Input

Each video input signal of the MAX9541 EV kit is con-

figured for AC-coupling. The EV kit provides each input

with an AC-coupling 0.1µF capacitor and a termination

resistor. A sync-tip clamp at each input provides bias

for the incoming video signal. The sync-tip voltage is

internally set to 300mV.

1-2*

2-3

Connected to VDD

Connected to GND

Normal operation

Shutdown mode

*Default position.

Table 2. Jumper JU2 Functions (A/B)

SHUNT

POSITION

A/B PIN

VIDEO SOURCE

Output

The video output amplifiers can both source and sink

load current, allowing output loads to be DC- or AC-

coupled. The amplifier output stage needs approxi-

mately 300mV of headroom from either supply rail. The

devices have an internal level-shift circuit that positions

1-2

2-3*

Connected to VDD

Connected to GND

Video Input B

Video Input A

*Default position.

_______________________________________________________________________________________

MAX9541 Evaluation Kit

Evluates:1/MAX9542

Figure 1. MAX9541 EV Kit Schematic

_______________________________________________________________________________________

MAX9541 Evaluation Kit

Evluates:1/MAX9542

Figure 2. MAX9541 EV Kit Component Placement Guide—Component Side

_______________________________________________________________________________________

MAX9541 Evaluation Kit

Evluates:1/MAX9542

Figure 3. MAX9541 EV Kit Component PCB Layout—Component Side

_______________________________________________________________________________________

MAX9541 Evaluation Kit

Evluates:1/MAX9542

Figure 4. MAX9541 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.

6 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

Maxim is a registered trademark of Maxim Integrated Products, Inc.

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