MAX9713 Evaluation Kit

2

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Quick Start

Recommended Equipment

Before beginning, the following equipment is needed:

• 15V, 1A power supply

• Audio source (i.e., CD player, cassette player)

•8

Ω/16Ω speaker

Procedure

The MAX9713 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 shunt is across jumper JU6 (differential

input mode).

2) Verify shunt across pins 1-2 of jumper JU1. Install

shunt across jumper JU7 (EV kit is enabled).

3) Verify shunts across pins 1-2 of jumpers JU2 and

JU3 (Gain = 16dB).

4) Verify shunts across pins 1-2 of jumpers JU4 and

JU5 (spread-spectrum mode, frequency centered at

335kHz).

5) Connect the speaker across the OUT+ and OUT-

pads.

6) Connect the positive terminal of the 15V power sup-

ply to the V+ pad and the ground terminal of the

power supply to the GND pad.

7) Connect the audio source across the VIN+ and VIN-

pads.

8) Turn on the power supply, and then turn on the

audio source.

Detailed Description

The MAX9713 EV kit contains the MAX9713 filterless

class D amplifier IC. The EV kit operates from a 10V to

25V DC power supply and accepts a differential or sin-

gle-ended audio input source. The single-ended input

source is amplified to drive 6W into an 8

Ω speaker.

The MAX9713 EV kit provides three sets of differential

outputs. The device outputs (OUT+/-) can be connect-

ed directly to a speaker load without any filtering.

However, a filter can be added to ease evaluation. The

filtered outputs (FOUT1+/-) require installation of filter-

ing components T1, C21, and C22. The LCR filtered

outputs (FOUT2+/-) require installation of filtering com-

ponents L4, L5, C15–C20, R2, and R3.

Component List (continued)

DESIGNATION

QTY

DESCRIPTION

L4, L5

0

Not installed, power inductors

R1

1

10k

Ω ±5% resistor (0402)

R2, R3

0

Not installed, resistors (0402)

T1

0

Not installed, common-mode choke

U1

1

32-pin TQFN-EP*, 5mm x 5mm x 0.8mm

Maxim MAX9713ETJ+

—

7

Shunts

—

1

PCB: MAX9713 Evalution Kit+

*EP = Exposed paddle.

SUPPLIER

PHONE

WEBSITE

AVX Corp.

843-946-0238 www.avxcorp.com

Central

Semiconductor Corp.

631-435-1110 www.centralsemi.com

Murata Mfg. Co., Ltd.

770-436-1300 www.murata.com

Taiyo Yuden

800-348-2496 www.t-yuden.com

TDK Corp.

847-803-6100 www.component.tdk.com

Component Suppliers

Note: Indicate that you are using the MAX9713 when contact-

ing these component suppliers.