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General Description

The MAX9730 evaluation kit (EV kit) is a fully assembled

and tested PCB that uses the MAX9730 Class G power

amplifier to drive a bridge-tied-load (BTL) speaker in

portable audio applications. Designed to operate from

a 2.7V to 5.5VDC power supply, the EV kit accepts a

single-ended or differential input signal. The EV kit pro-

vides a fully differential output capable of delivering

2.4W into an 8Ω speaker.

Features

 5V Single-Supply Operation

 Fully Differential Output

 Delivers 2.4W into an 8Ω Speaker

 Configurable Switching Frequency

 Evaluates the MAX9730 in a 28-Pin TQFN (4mm x

4mm x 0.8mm) Package

 MAX9730 IC Available in a 20-Bump UCSP (2mm x

2.5mm) Package

 Fully Assembled and Tested

Evaluates: MAX9730

MAX9730 Evaluation Kit

________________________________________________________________

Maxim Integrated Products

19-0751; Rev 0; 2/07

Component List

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

Component Suppliers

Denotes a lead-free and RoHS-compliant EV kit.

This limited temperature range is for the EV kit PCB only. The

MAX9730 IC temperature range is -40°C to +85°C.

EP = Exposed paddle.

Note: Indicate that you are using the MAX9730 when

contacting these component suppliers.

PART

TEMP RANGE

IC PACKAGE

MAX9730EVKIT+ 0°C to +70°C*

28 TQFN-EP**

(4mm x 4mm x 0.8mm)

DESIGNATION QTY DESCRIPTION

C1–C4 4

0.1µF ±10%, 6.3V X5R ceramic

capacitors (0402)

Murata GRM155R60J104K

C5, C6 2

1µF ±10%, 6.3V X5R ceramic

capacitors (0402)

Murata GRM155R60J105K

C7 1

4.7µF ±10%, 6.3V X5R ceramic

capacitor (1206)

Murata GRM31CR60J475K

C8, C9, C10 3

10µF ±20%, 6.3V X5R ceramic

capacitors (0603)

Murata GRM188R60J106M

JU1 1 3-pin header

R1–R4 4

10kΩ ±0.5% precision-thick

film-chip resistors (0603)

Panasonic ERJ3RBD1002V

R5 1 100kΩ ±1% resistor (0603)

U1 1

MAX9730ETI+ (28-pin TQFN, 4mm

x 4mm x 0.8mm)

— 1 Shunt

— 1 PCB: MAX9730 evaluation kit

SUPPLIER PHONE WEBSITE

Murata Mfg. Co., Ltd. 770-436-1300 www.murata.com

Panasonic Corp. 714-373-7366 www.panasonic.com

Quick Start

Recommended Equipment

• 5V, 2A power supply

• Audio source (i.e., CD player, MP3 player, etc.)

• One 8Ω speaker

Procedure

The MAX9730 EV kit is fully assembled and tested.

Follow the steps listed below to verify board operation.

Caution: Do not turn on the power supply until all

connections are completed.

1) Install a shunt across pins 1-2 of jumper JU1 (EV kit ON).

2) Connect the 8Ω speaker across the OUT- and

OUT+ pads.

3) Connect the ground terminal of the power supply to

the GND pad and the positive terminal to the VCC pad.

4) Connect the positive terminal of the audio source to

the IN+ pad.

5) Connect the negative terminal of the audio source

to the IN- pad. Connect the IN- pad to the GND

pad if the audio source is single-ended.

6) Connect the ground terminal of the audio source to

the GND pad.

7) Turn on the audio source.

8) Turn on the power supply.

Summary of content (4 pages)

PAGE 1
9-0751; Rev 0; 2/07 MAX9730 Evaluation Kit The MAX9730 evaluation kit (EV kit) is a fully assembled and tested PCB that uses the MAX9730 Class G power amplifier to drive a bridge-tied-load (BTL) speaker in portable audio applications. Designed to operate from a 2.7V to 5.5VDC power supply, the EV kit accepts a single-ended or differential input signal. The EV kit provides a fully differential output capable of delivering 2.4W into an 8Ω speaker.
PAGE 2
Evaluates: MAX9730 MAX9730 Evaluation Kit Detailed Description Jumper Selection The MAX9730 EV kit features the MAX9730 Class G power amplifier IC, designed to drive a dynamic speaker in BTL configuration. The EV kit operates from a DC power supply that provides 2.7V to 5.5V and 2A of current. The EV kit accepts single-ended or differential audio input and provides a fully differential output. The audio input source is amplified to drive 2.4W into an 8Ω speaker with a 5V power supply.
PAGE 3
MAX9730 Evaluation Kit VCC 14 C8 10µF C2 0.1µF C1 0.1µF 22 VCC CPVDD VCC N.C. CPGND GND 18 4 C9 10µF 28 27 GND PVSS 24 VCC SHDN JU1 C10 10µF 1 2 1 U1 SHDN 12 IN+ IN- C6 1µF SVSS MAX9730 3 C5 1µF Evaluates: MAX9730 VCC VCC R1 10kΩ 0.5% R2 10kΩ 0.5% SVSS 15 21 C3 0.1µF FB+ C4 0.1µF C1P 3 10 C7 4.7µF IN+ C1N 26 R3 10kΩ 0.5% 9 OUT+ OUT+ 20 IN- 7 OUT- OUT- 16 FBR4 10kΩ 0.5% FS N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
PAGE 4
Evaluates: MAX9730 MAX9730 Evaluation Kit Figure 2. MAX9730 EV Kit Component Placement Guide— Component Side Figure 3. MAX9730 EV Kit PCB Layout—Component Side Figure 4. MAX9730 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.