Datasheet

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General Description

The MAX98502 evaluation kit (EV kit) is a fully assembled

and tested circuit board that uses the MAX98502 boost-

ed Class D amplifier to drive a mono bridge-tied-load

(BTL) speaker in portable audio applications. Designed

to operate from a 2.5V to 5.5V DC power supply, the EV

kit is capable of delivering 2.2W into an 8I load or 4W

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

ended input signals, features selectable gain, and sepa-

rate speaker and boost shutdown inputs.

Features

S 2.5V to 5.5V Single-Supply Operation

S 4W Mono Class D Output

S Selectable Gain: +6dB, +15.5dB, and +20dB

S Boosted Class D Output

S Differential or Single-Ended Input

S Boost Converter Shutdown

S Speaker Output Shutdown

S Proven PCB Layout

S Fully Assembled and Tested

DESIGNATION QTY DESCRIPTION

C1 1

10FF Q10%, 6.3V X7R ceramic

capacitor (0805)

Murata GRM21BR70J106K

TDK C2012X7R0J106K

C2 1

22FF Q20%, 16V X5R ceramic

capacitor (1206)

Murata GRM31CR61C226M

Taiyo Yuden EMK316BJ226M

C3, C4 2

1FF Q10%, 25V X7R ceramic

capacitors (0603)

Murata GRM188R71E105K

Murata GRM188R71E105M

C5 1

22FF Q10%, 6.3V X5R ceramic

capacitor (0805)

Murata GRM21BR60J226M

TDK C2012X5R0J226K

C8 1

0.1FF Q10%, 16V X7R ceramic

capacitor (0402)

Murata GRM155R71C104K

TDK C1005X7R1C104K

C12, C13 0

Not installed, ceramic

capacitors (0603)

C14–C18 5

0.22FF Q10%, 25V X7R ceramic

capacitors (0603)

Murata GRM188R71E224K

TDK C1608X7R1E224K

DESIGNATION QTY DESCRIPTION

FB2, FB3 0

Not installed, ferrite beads

(0603)

J1 1

Phono jack, black

(side-entry PCB mount)

JU1, JU2, JU3 3 3-pin headers

JU4 1 2-pin header

L1 1

2.2FH, 91mI, 1.5A inductor

(3.2mm x 2.5mm)

Murata LQH32PN2R2NN0

L2, L3 0 Not installed, inductors

OUT-, OUT+,

RKNEE, PGND

4 Test points

R1 1

27.4kI Q1% resistor (0603)

R2, R3 2

22I Q5% resistors (0603)

U1 1

Boosted Class D audio

amplifier (16 WLP)

Maxim MAX98502EWE+

VCCOUT 0 Not installed, test point

— 4 Shunts

— 1

PCB: MAX98502 EVALUATION

KIT

OPTIONAL COMPONENTS

L2, L3 2

22FH Q20%, 2A inductors

(D75LC)

TOKO B1047AS-220M

MAX98502 Evaluation Kit

Evaluates: MAX98502

_________________________________________________________________ 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

19-6275; Rev 0; 4/12

Ordering Information appears at end of data sheet.

Summary of content (7 pages)

PAGE 1
9-6275; Rev 0; 4/12 MAX98502 Evaluation Kit Evaluates: MAX98502 General Description The MAX98502 evaluation kit (EV kit) is a fully assembled and tested circuit board that uses the MAX98502 boosted Class D amplifier to drive a mono bridge-tied-load (BTL) speaker in portable audio applications. Designed to operate from a 2.5V to 5.5V DC power supply, the EV kit is capable of delivering 2.2W into an 8I load or 4W into a 4I load.
PAGE 2
MAX98502 Evaluation Kit Evaluates: MAX98502 Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Taiyo Yuden 800-348-2496 www.t-yuden.com TDK Corp. 847-803-6100 www.component.tdk.com TOKO America, Inc. 847-297-0070 www.tokoam.com Note: Indicate that you are using the MAX98502 when contacting these component suppliers.
PAGE 3
MAX98502 Evaluation Kit Evaluates: MAX98502 Input Mode Jumper JU4 provides the option to select between a differential or single-ended input mode for the EV kit. See Table 3 for JU4 configuration. Optional Output Filtering The IC is designed to pass FCC emissions standards without any filtering when using up to 24in of cable to connect the speaker. When evaluating the IC without any filtering, connect the speaker to the output test points (OUT+/OUT-).
PAGE 4
MAX98502 Evaluation Kit Evaluates: MAX98502 Figure 1.
PAGE 5
MAX98502 Evaluation Kit Evaluates: MAX98502 1.0” Figure 2. MAX98502 EV Kit Component Placement Guide— Component Side 1.0” Figure 3. MAX98502 EV Kit PCB Layout—Component Side 1.0” Figure 4.
PAGE 6
MAX98502 Evaluation Kit Evaluates: MAX98502 Ordering Information PART TYPE MAX98502EVKIT# EV Kit #Denotes RoHS compliant.
PAGE 7
MAX98502 Evaluation Kit Evaluates: MAX98502 Revision History REVISION NUMBER REVISION DATE 0 4/12 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.