ISL59605IRZ-EVALZ Intersil, ISL59605IRZ-EVALZ Datasheet

ISL59605IRZ-EVALZ

Manufacturer Part Number

ISL59605IRZ-EVALZ

Description

EVALUATION BOARD FOR ISL5960X

Manufacturer

Intersil

Series

MegaQ™r

Datasheets

1.ISL59601IRZ-T7.pdf (27 pages)

2.ISL59605IRZ-EVALZ.pdf (6 pages)

Specifications of ISL59605IRZ-EVALZ

Main Purpose

Video, Cable Equalizer/Amplifier

Embedded

Utilized Ic / Part

ISL59605IRZ

Secondary Attributes

LED Status Indicators

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Primary Attributes

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ISL59605IRZ-EVALZ Evaluation Board Operation

Description

The ISL59605IRZ-EVALZ board is designed to allow evaluation of

the ISL5960x (“MegaQ™”) family of parts, as well as provide the

reference schematic and PCB layout of a typical MegaQ™

application.

Power Connections

The power connectors are at the middle of the top of the

evaluation board. The board requires a 5V power supply capable

of supplying at least 110mA. Because of the high amount of

high-frequency gain required to equalize long cables, excessive

noise on the power supply may introduce noise on the output

signal or cause difficulty locking at longer distances. Power

supplies with linear regulators are preferable to switching

regulators, however, switching supplies may work acceptably

well if they are adequately filtered.

Input Connections

Unshielded twisted pair (UTP) signals arrive via the RJ-45 Cat 5

connector on the left. The input signal can arrive on any arbitrary

combination of pins, though it would typically be one of the

standard Cat x pairs of 1 and 2, 3 and 6, 4 and 5, or 7 and 8. The

3x8 jumper block to the right of the RJ-45 jack is used to assign

which Cat x pin goes to the positive MegaQ™ input (in the photo,

it’s pin 8), and which goes to the negative input (pin 7). The

“Termination” switch to the lower right of the jumper block

January 21, 2011

AN1598.1

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) and MegaQ are trademarks owned by Intersil Corporation or one of its subsidiaries.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

should be switched to “CAT5” (it’s set to “COAX” in the photo). Do

not attach a coax cable while trying to receive a signal over Cat x.

Coax signals are connected through the “COAX IN” BNC

connector on the upper left. When using coax signals, set the

“Termination” switch to “COAX” and ensure that no Cat x cables

are attached to the RJ45 connector.

The IN+ and IN- test points near U1 can be used to view the input

signals at the input to the MegaQ™ chip.

Output Connections

Standard 75Ω composite video is available at the “VIDEO OUT”

BNC connector on the right, as well as the “OUT” test pin between

U1 and the BNC output.

Switch Settings

There are several switches on the evaluation board that can be

used to put MegaQ™ in its different operational modes:

• “EQ DIS” (EQ Enable): This can be used to disable the EQ so

• COLOR: The Color signal can be an input or an output (see

that an external source can drive a signal over the cable. This

switch should be set to 0 for normal operation (switch in “up”

position). Note: The switch used may have a middle “open”

position, but it should always be set low or high.

datasheet for more information). The default position for

automatic color detection is the middle position (“F” for floating,

not 0 or 1).

All other trademarks mentioned are the property of their respective owners.

Application Note 1598

Author: Fred Hamilton

Related parts for ISL59605IRZ-EVALZ

ISL59605IRZ-EVALZ Summary of contents

Page 1

... ISL59605IRZ-EVALZ Evaluation Board Operation Description The ISL59605IRZ-EVALZ board is designed to allow evaluation of the ISL5960x (“MegaQ™”) family of parts, as well as provide the reference schematic and PCB layout of a typical MegaQ™ application. Power Connections The power connectors are at the middle of the top of the evaluation board ...

Page 2

INVERT: The Invert signal can be an input or an output (see datasheet for more info). The default position for automatic inversion detection and correction is the middle position (“F” for floating - not 0 or 1). • FREEZE: ...

Page 3

... ISL59605IRZ-EVALZ Evaluation Board Schematic ...

Page 4

... ISL59605IRZ-EVALZ Board Layout 4 Application Note 1598 FIGURE 1. PCB TOP LAYER WITH SILKSCREEN FIGURE 2. PCB BOTTOM LAYER WITH SILKSCREEN January 21, 2011 AN1598.1 ...

Page 5

... ISL59605IRZ-EVALZ Board Layout 5 Application Note 1598 (Continued) FIGURE 3. PCB TOP LAYER FIGURE 4. PCB BOTTOM LAYER January 21, 2011 AN1598.1 ...

Page 6

... SW2, SW3, SW4 Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com ...

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