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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

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MAX98304 Evaluation Kit

Evaluates: MAX98304

General Description

The MAX98304 evaluation kit (EV kit) is a fully assembled

and tested circuit board that uses the MAX98304 filterless

Class D amplifier to drive a speaker in portable audio

applications. The EV kit comes with a MAX98304EWL+

in a 9-bump, 0.3mm pitch wafer-level package (WLP).

Designed to operate from a 2.5V to 5.5V DC power

supply, the EV kit is capable of delivering 3.2W into a

4I load. The EV kit accepts differential or single-ended

input signals.

Features

S Filterless Operation Passes Radiated Emissions

with 60cm of Speaker Cable

S 2.5V to 5.5V Single-Supply Operation

S 3.2W Mono Class D Output

S Selectable Gain Control

S Differential or Single-Ended Input

S Low-Power Shutdown Input

S Fully Assembled and Tested

Ordering Information

Component List

19-5609; Rev 0; 10/10

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

PART TYPE

MAX98304EVKIT+ EV Kit

DESIGNATION QTY DESCRIPTION

C1 1

10µF Q20%, 6.3V X5R ceramic

capacitor (0603)

Murata GRM188R60J106M

C2 1

0.1µF Q10%, 16V X7R ceramic

capacitor (0402)

Murata GRM155R71C104K

C3, C4 2

0.47µF Q10%, 10V X5R

ceramic capacitors (0402)

Murata GRM155R61A474K

C5, C6 0

Not installed, ceramic

capacitors (0603)

C7–C11 0

Not installed, ceramic

capacitors (0603);

provided with the EV kit:

0.22µF Q10%, 25V X7R

ceramic capacitors (0603)

Murata GRM188R71E224K

FB1, FB2 2

0I Q5% resistors (0603)

INPUT 1 Black RCA jack

JU1 1 2-pin header

JU2 1 3-pin header

DESIGNATION QTY DESCRIPTION

JU3 1 5-pin, 4-way header

L1, L2 0

Not installed, inductors—

shorted with PCB trace;

provided with the EV kit:

22µH Q20%, 1A inductors

TOKO A916CY-220M

FOUT+, FOUT-,

PVDD, PGND

4 Binding posts

OUT+, OUT- 2 1-pin headers

R1, R2 2

100kI Q5% resistors (0402)

R3, R4 0

Not installed, resistors (0603);

provided with the EV kit:

22I Q5% resistors (0603)

U1 1

Mono Class D amplifier

(9 WLP)

Maxim MAX98304EWL+

(Top Mark: AIR)

— 3 Shunts

— 1

PCB: MAX98304 EVALUATION

KIT+

Summary of content (6 pages)

PAGE 1
9-5609; Rev 0; 10/10 MAX98304 Evaluation Kit The MAX98304 evaluation kit (EV kit) is a fully assembled and tested circuit board that uses the MAX98304 filterless Class D amplifier to drive a speaker in portable audio applications. The EV kit comes with a MAX98304EWL+ in a 9-bump, 0.3mm pitch wafer-level package (WLP). Designed to operate from a 2.5V to 5.5V DC power supply, the EV kit is capable of delivering 3.2W into a 4I load. The EV kit accepts differential or single-ended input signals.
PAGE 2
Evaluates: MAX98304 MAX98304 Evaluation Kit Component Suppliers SUPPLIER PHONE Murata Electronics North America, Inc. 770-436-1300 WEBSITE www.murata-northamerica.com TOKO America, Inc. 847-297-0070 www.tokoam.com Note: Indicate that you are using the MAX98304EWL+ when contacting these component suppliers.
PAGE 3
MAX98304 Evaluation Kit Gain Setting The EV kit maximum signal gain can be configured to five different settings. JU3 selects the overall gain for the EV kit. See Table 3 for JU3 configuration. The IC can pass CE EN55022B regulations with 60cm of speaker cable and no filtering. However, ferrite-bead filters can be used to achieve further attenuation of radiated emissions.
PAGE 4
Evaluates: MAX98304 MAX98304 Evaluation Kit Figure 1.
PAGE 5
MAX98304 Evaluation Kit Figure 2. MAX98304 EV Kit Component Placement Guide— Component Side 1.0” Figure 3. MAX98304 EV Kit PCB Layout—Component Side 1.0” Figure 4. MAX98304 EV Kit PCB Layout—Solder Side _______________________________________________________________________________________ 5 Evaluates: MAX98304 1.
PAGE 6
MAX98304 Evaluation Kit Evaluates: MAX98304 Revision History REVISION NUMBER REVISION DATE 0 10/10 DESCRIPTION Initial release PAGES CHANGED — 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.