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General Description

The MAX98307 evaluation kit (EV kit) is a fully assembled

and tested circuit board that evaluates the MAX98307

filterless Class DG multilevel amplifier to drive a speaker

in portable audio applications. The EV kit comes with a

MAX98307 IC in a 16-pin TQFN-EP package. Designed

to operate from a 2.6V to 5.25V DC power supply, the EV

kit is capable of delivering 3.3W into an 8I load. The EV

kit accepts a differential or a single-ended input signal.

Features

S Filterless Operation Passes Radiated Emissions

with Up to 30cm of Speaker Cable

S 2.6V to 5.25V Single-Supply Operation

S Delivers Up to 3.3W

Into an 8I Speaker

S Configurable Gain Control

S Differential or Single-Ended Input

S Low-Power Shutdown Input

S Proven PCB Layout

S Fully Assembled and Tested

DESIGNATION QTY DESCRIPTION

MINIMAL COMPONENTS FOR CUSTOMER DESIGN

C1, C2, C3 3

0.1FF Q10%, 16V X7R ceramic

capacitors (0603)

Murata GRM188R71C104K

C4, C5 2

0.33FF Q10%, 16V X7R ceramic

capacitors (0603)

Murata GRM188R71C334K

C6 1

4.7FF Q10%, 16V X7R ceramic

capacitor (0805)

Murata GRM21BR71C475K

C7 1

10FF Q20%, 6.3V X5R ceramic

capacitor (0603)

Murata GRM188R60J106M

R1, R2 2

10kI Q1% resistors (0603)

R3, R4 2

20kI Q1% resistors (0603)

U1 1

Class DG audio amplifier

(16-TQFN-EP)

Maxim MAX98307ETE+

OPTIONAL COMPONENTS FOR CUSTOMER

EVALUATION

C1N, PVSS 2 White test points, 40 mil drill size

C1P 1 Red test point, 40 mil drill size

C8 1

10FF Q20%, 6.3V X5R ceramic

capacitor (0603)

Murata GRM188R60J106M

DESIGNATION QTY DESCRIPTION

C9–C13 0

Not installed, capacitors (0603)

Recommended:

Murata GRM188R71C224K

C14–C17 0 Not installed, capacitors (0603)

FOUT-, FOUT+,

PGND, PVDD

4 Binding posts

IN 1

Red, right-angle, PC-mount

RCA jack

JU1 1 3-pin header

JU2 1 2-pin header

L1, L2 0

Not installed, inductors—short

(PC trace)

Recommended:

Sumida CDRH65-220M

OUT- 1 Black test point, 63 mil drill size

OUT+ 1 Red test point, 63 mil drill size

R5, R6 0

Not installed, resistors (0603)

Recommended:

22I Q5% resistors (0603)

R7, R8 2

0I Q5% resistors (0603)

SU1, SU2 2 Shunts (JU1, JU2)

TP0 0

Not installed, test point

(15 mil drill size)

— 1

PCB: MAX98307 EVALUATION

KIT

MAX98307 Evaluation Kit

Evaluates: MAX98307

_________________________________________________________________ Maxim Integrated Products 1

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.

Component List

19-5985; Rev 0; 7/11

Ordering Information appears at end of data sheet.

Summary of content (7 pages)

PAGE 1
9-5985; Rev 0; 7/11 MAX98307 Evaluation Kit Evaluates: MAX98307 General Description The MAX98307 evaluation kit (EV kit) is a fully assembled and tested circuit board that evaluates the MAX98307 filterless Class DG multilevel amplifier to drive a speaker in portable audio applications. The EV kit comes with a MAX98307 IC in a 16-pin TQFN-EP package. Designed to operate from a 2.6V to 5.25V DC power supply, the EV kit is capable of delivering 3.3W into an 8I load.
PAGE 2
MAX98307 Evaluation Kit Evaluates: MAX98307 Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Sumida Corp. 847-545-6700 www.sumida.com Note: Indicate that you are using the MAX98307 when contacting these component suppliers. Quick Start • MAX98307 EV kit Recommended Equipment Customizing the Gain The EV kit is shipped with a gain of +14.5dB. Change the resistors (R1–R4) to customize the gain of the EV kit.
PAGE 3
MAX98307 Evaluation Kit Evaluates: MAX98307 Table 1. Shutdown Mode (JU1 Jumper Selection) SHUNT POSITION SHDN PIN CONNECTED TO VCC EV KIT FUNCTION 1-2* 2-3 PGND Shutdown mode External logic controller SHDN driven by external logic controller. Shutdown is active low and is 1.8V logic compliant. Not installed EV kit enabled *Default position. Table 2.
PAGE 4
MAX98307 Evaluation Kit Evaluates: MAX98307 Figure 1.
PAGE 5
MAX98307 Evaluation Kit Evaluates: MAX98307 1.0” Figure 2. MAX98307 EV Kit Component Placement Guide— Component Side 1.0” Figure 3. MAX98307 EV Kit PCB Layout—Component Side 1.0” Figure 4.
PAGE 6
MAX98307 Evaluation Kit Evaluates: MAX98307 Ordering Information PART TYPE MAX98307EVKIT# EV Kit #Denotes RoHS compliant.
PAGE 7
MAX98307 Evaluation Kit Evaluates: MAX98307 Revision History REVISION NUMBER REVISION DATE 0 7/11 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.