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General Description

The MAX9736A evaluation kit (EV kit) is a fully assembled

and tested printed-circuit board (PCB) that configures

the MAX9736A Class D amplifier to drive 2 x 15W into a

pair of 8Ω speakers in stereo mode, or 1 x 30W into a

4Ω speaker in mono mode for audio applications. The

EV kit operates from an 8V to 28V DC power supply

and is configured for +17.1dB gain. The MAX9736A EV

kit accepts a pair of single-ended input signals and

provides two sets of differential outputs for speakers.

The MAX9736A EV kit provides an option to control the

shutdown, mute, modulation scheme, and mono mode

of the MAX9736A. The EV kit includes convenient audio

input and output connectors and the required output fil-

ters to ease evaluation. The MAX9736A EV kit can also

evaluate the MAX9736B after IC replacement (U1).

Features

♦ 8V to 28V Single DC Power-Supply Operation

♦ Fully Differential Outputs

♦ Drives 2 x 15W into 8Ω Speakers in Stereo Mode

♦ Drives 1 x 30W into 4Ω Speaker in Mono Mode

♦ Shutdown and Mute Control

♦ Selectable Modulation Scheme

♦ Evaluates the MAX9736A/MAX9736B in 32-Pin

TQFN-EP Package

♦ Fully Assembled and Tested

Evaluates: MAX9736A/MAX9736B

MAX9736A Evaluation Kit

________________________________________________________________

Maxim Integrated Products

19-4071; Rev 1; 9/09

Component List

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

DESIGNATION QTY DESCRIPTION

MINIMAL COMPONENTS FOR CUSTOMER DESIGN

C1 1

220µF ±20%, 35V aluminum

electrolytic capacitor

(10mm x 12.5mm)

Panasonic EEUFM1V221

C3, C4, C5 3

0.1µF ±10%, 50V X7R ceramic

capacitors (0603)

Murata GRM188R71H104K

C6 1

1µF ±10%, 16V X7R ceramic

capacitor (0603)

Murata GRM188R71C105K

C8, C9, C10 3

1µF ±10%, 10V X7R ceramic

capacitors (0603)

Murata GRM188R71A105K

C11, C12 2

1µF ±10%, 25V X7R ceramic

capacitors (0805)

Murata GRM21BR71E105K

R2–R5 4 20kΩ ±1% resistors (0603)

C2 1

0.1µF ±10%, 50V X7R ceramic

capacitor (0603)

Murata GRM188R71H104K

DESIGNATION QTY DESCRIPTION

OPTIONAL COMPONENTS FOR CUSTOMER

C7 1

1µF ±10%, 10V X7R ceramic

capacitor (0603)

Murata GRM188R71A105K

C13–C16 0 Not installed, capacitors (0603)

C17–C26 10

0.15µF ±10%, 50V X7R ceramic

capacitors (0805)

Murata GRM21BR71H154K

D1 1

4.3V, 20mA zener diode (SOT23)

Central CMPZ5229B

(Top Mark: C8D)

FB1 1

Ferrite bead, 22Ω at 100MHz,

10mΩ DCR, 6A (0805)

Murata BLM21PG220SN1D

FOUTL-, FOUTL+,

FOU TR- , FO U TR+ ,

V D D , P G N D

6 Binding posts

JU1 1 3-pin header

JU2–JU5 4 2-pin headers

JU6 0 Not installed 2-pin header

PART TYPE

MAX9736AEVKIT+ EV Kit

Denotes lead(Pb)-free and RoHS compliant.

EP = Exposed pad.

Summary of content (10 pages)

PAGE 1
9-4071; Rev 1; 9/09 MAX9736A Evaluation Kit The MAX9736A evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) that configures the MAX9736A Class D amplifier to drive 2 x 15W into a pair of 8Ω speakers in stereo mode, or 1 x 30W into a 4Ω speaker in mono mode for audio applications. The EV kit operates from an 8V to 28V DC power supply and is configured for +17.1dB gain.
PAGE 2
Evaluates: MAX9736A/MAX9736B MAX9736A Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY 5 100kΩ ±5% resistors (0603) DESCRIPTION 2 PCB mini test points, 0.040in (white) R14–R18 LIN 1 RCA phono jack, side entry, PCB mount (white) U1 1 Class D audio amplifier (32 TQFN-EP*) Maxim MAX9736AETJ+ L1–L4 4 15µH ±20%, 3.1A inductors Sumida CDRH104RNP-150NC — 5 Shunts R-, R+ 2 PCB mini test points, 0.040in (red) — 4 0.250in x 0.
PAGE 3
MAX9736A Evaluation Kit The MAX9736A EV kit is designed to evaluate the MAX9736A in a 32-pin TQFN-EP package. The MAX9736A is a Class D amplifier that can be configured to drive 2 x 15W into a pair of 8Ω speakers, or 1 x 30W into a 4Ω speaker. The EV kit operates from a DC power supply that provides 8V to 28V and 5A of current. The EV kit PCB is designed with two layers and has 2oz copper for optimized power dissipation.
PAGE 4
Evaluates: MAX9736A/MAX9736B MAX9736A Evaluation Kit Internal Regulator Enable (REGEN) The MAX9736A provides an option to disable the internal regulator when an optional external power supply is connected to the VS and AGND pads on the EV kit to power the MAX9736A preamplifiers. Jumper JU3 controls the internal regulator enable (REGEN) pin on the MAX9736A IC (see Table 4 for shunt positions). See the Optional External Preamplifier Power Supply (VS) section.
PAGE 5
MAX9736A Evaluation Kit Evaluates: MAX9736A/MAX9736B Figure 1.
PAGE 6
Evaluates: MAX9736A/MAX9736B MAX9736A Evaluation Kit Figure 2.
PAGE 7
MAX9736A Evaluation Kit Evaluates: MAX9736A/MAX9736B Figure 3.
PAGE 8
Evaluates: MAX9736A/MAX9736B MAX9736A Evaluation Kit Figure 4.
PAGE 9
MAX9736A Evaluation Kit Evaluates: MAX9736A/MAX9736B Figure 5.
PAGE 10
Evaluates: MAX9736A/MAX9736B MAX9736A Evaluation Kit Revision History REVISION REVISION NUMBER DATE DESCRIPTION 0 3/08 Initial release 1 9/09 Changed part number for C6 and replaced Figures 1–5 PAGES CHANGED — 1, 2 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.