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General Description

The MAX13331 evaluation kit (EV kit) is a fully assem-

bled and tested surface-mount circuit board that evalu-

ates the MAX13331 DirectDrive

stereo headphone

amplifier. DirectDrive eliminates the two large DC-

blocking capacitors typically required between the out-

put of the amplifier and the headphones. The

MAX13331 EV kit includes two RCA phono jacks on the

input and a 3.5mm headphone jack on the output to

facilitate easy connections to the circuit board.

The MAX13331 EV kit can also evaluate the MAX13330

IC. This requires the IC replacement of U1.

Features

♦ No DC-Blocking Capacitors Required

♦ 4V to 5.5V Single-Supply Operation

♦ Adjustable Gain (MAX13331 Only)

♦ 125mW Per Channel into 32Ω at 0.01% THD+N

♦ Shutdown Control

♦ Ultra-Compact Solution

♦ Low-Profile (1.2mm, max) Design

♦ Lead(Pb)-Free and RoHS Compliant

♦ Fully Assembled and Tested Surface-Mount Board

Evaluates: MAX13330/MAX13331

MAX13331 Evaluation Kit

________________________________________________________________

Maxim Integrated Products

19-4499; Rev 1; 4/09

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.

Ordering Information

PART TYPE

MAX13331EVKIT+ EV Kit

Denotes lead(Pb)-free and RoHS compliant.

Component List

DESIGNATION QTY DESCRIPTION

C1, C2 2

1µF ±10%, 16V X7R ceramic

capacitors (0603)

Murata GRM188R71C105K

TDK C1608X7R1C105K

C3, C4, C11 3

1000pF ±10%, 50V X7R ceramic

capacitors (0402)

Murata GRM155R71H102K

TDK C1005X7R1H102K

C5, C7, C8 3

1µF ±10%, 10V X7R ceramic

capacitors (0603)

Murata GRM188R71A105K

TDK C1608X7R1A105K

C6, C9, C14 3

0.1µF ±10%, 16V X7R ceramic

capacitors (0402)

Murata GRM155R71C104K

TDK C1005X7R1C104K

C10 1

10µF ±10%, 10V X7R ceramic

capacitor (0805)

Murata GRM21BR71A106K

C12, C13 2

0.01µF ±10%, 50V X7R ceramic

capacitors (0402)

Murata GRM155R71H103K

DESIGNATION QTY DESCRIPTION

J1 1 3.5mm stereo headphone jack

JU1 1 2-pin header, 0.1in centers

JU2 0

Not installed, 2-pin header, 0.1in

centers

OUTL, OUTR,

SGND

0 Not installed, miniature test points

P1 1

RCA phono jack (side-entry PCB

mount), white

P2 1

RCA phono jack (side-entry PCB

mount), red

R1, R2, R5 3 15kΩ ±1% resistors (0402)

R3, R4 2 22.6kΩ ±1% resistors (0402)

U1 1

Automotive DirectDrive headphone

amplifier (16 QSOP)

Maxim MAX13331GEE/V+

— 1 Shunt

— 1 PCB: MAX13331 EVALUATION KIT+

DirectDrive is a registered trademark of Maxim Integrated

Products, Inc.

Summary of content (7 pages)

PAGE 1
9-4499; Rev 1; 4/09 MAX13331 Evaluation Kit Features The MAX13331 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that evaluates the MAX13331 DirectDrive ® stereo headphone amplifier. DirectDrive eliminates the two large DCblocking capacitors typically required between the output of the amplifier and the headphones. The MAX13331 EV kit includes two RCA phono jacks on the input and a 3.5mm headphone jack on the output to facilitate easy connections to the circuit board.
PAGE 2
Evaluates: MAX13330/MAX13331 MAX13331 Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX13331 when contacting these component suppliers. Quick Start Detailed Description of Hardware Required Equipment The MAX13331 EV kit is a stereo, single-supply headphone amplifier. The input impedance is 15kΩ.
PAGE 3
MAX13331 Evaluation Kit Evaluates: MAX13330/MAX13331 Figure 1.
PAGE 4
Evaluates: MAX13330/MAX13331 MAX13331 Evaluation Kit Figure 2. MAX13331 EV Kit Component Placement Guide—Component Side Figure 3.
PAGE 5
MAX13331 Evaluation Kit Evaluates: MAX13330/MAX13331 Figure 4. MAX13331 EV Kit PCB Layout—Internal Layer 2 Figure 5.
PAGE 6
Evaluates: MAX13330/MAX13331 MAX13331 Evaluation Kit Figure 6. MAX13331 EV Kit PCB Layout—Solder Side Figure 7.
PAGE 7
MAX13331 Evaluation Kit REVISION NUMBER REVISION DATE 0 3/09 Initial release 1 4/09 Updated schematic and PCB layout diagrams with routing changes on jacks P1 and P2 DESCRIPTION PAGES CHANGED — 3–6 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.