19-6217; Rev 0; 2/12
MAX97003 Evaluation Kit
Evaluates: MAX97003
General Description
The MAX97003 evaluation kit (EV kit) is a fully assembled
and tested PCB that evaluates the MAX97003 audio
subsystem. The device features a mono Class D speaker
amplifier and a stereo Class H DirectDrive
M
headphone
amplifier. The EV kit features an on-board microcontroller
for communicating with the I
2
C interface of the device.
Pads are provided for accessing the analog inputs and
amplifier outputs.
The EV kit requires a 2.7V to 5.5V power supply. The
on-board LDO generates an additional 1.8V supply from
the USB 5V supply. The EV kit delivers 1W into an 8I
speaker, and 32mW/channel into a 32I headphone.
Windows XP
M
-, Windows Vista
M
-, and Windows
M
7-compat-
ible EV kit software is provided to facilitate configuration.
The EV kit software controls the on-board microcontroller
over USB, which generates I
2
C commands.
USB
Features
S
2.7V to 5.5V Single-Supply Operation
S
Proven Audio PCB Layout
S
On-Board USB Interface Circuit Generates
I
2
C-Compatible Signals
S
PCB Pads for User-Supplied I
2
C-Compatible
Signals
S
Surface-Mount Components
S
Windows XP-, Windows Vista-, and Windows
7-Compatible Software
S
Fully Assembled and Tested
Ordering Information
appears at end of data sheet.
2.7V TO
5.5V
LDO
1.8V
ON-BOARD
MICROCONTROLLER
I
2
C
CONTROL
POWER SUPPLY
STEREO/
MONO INPUT
DRC AND
EXPANDER
VOLUME
CLASS D
AMPLIFIER
LIMITER
EXPANDER
STEREO/
MONO INPUT
VOLUME
CLASS H
AMPLIFIER
CHARGE
PUMP
MAX97003
EARPHONE
GROUND SENSE
Figure 1. MAX97003 Evaluation Kit Simplified Block Diagram
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
Windows, Windows XP, and Windows Vista are registered
trademarks of Microsoft Corp.
_________________________________________________________________
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.
MAX97003 Evaluation Kit
Evaluates: MAX97003
Component List
DESIGNATION
C1–C8, C114,
C123
C9, C10, C101,
C103–C110,
C121
C11, C12,
C102, C113,
C115, C122
C13–C17
C18–C25, C117
C111, C112
QTY
10
DESCRIPTION
1FF
Q10%,
6.3V X5R ceramic
capacitors (0402)
Murata GRM155R60J105K
0.1FF
Q10%,
6.3V X5R ceramic
capacitors (0402)
Murata GRM155R60J104K
10FF
Q20%,
6.3V X5R ceramic
capacitors (0603)
Murata GRM188R60J106M
0.22FF
Q10%,
6.3V X5R ceramic
capacitors (0402)
Murata GRM155R60J224K
Not installed, capacitors (0402)
10pF
Q5%,
50V C0G ceramic
capacitors (0402)
Murata GRM1555C1H100J
2.2FF
Q20%,
6.3V X5R ceramic
capacitor (0402)
Murata GRM155R60J225M
22pF
Q5%,
50V C0G ceramic
capacitors (0402)
Murata GRM1555C1H220J
3300pF
Q10%,
50V X7R ceramic
capacitor (0402)
Murata GRM155R71H332K
0.01FF
Q10%,
16V X7R ceramic
capacitors (0402)
Murata GRM155R71C103K
Green LED (0603)
Not installed, ferrite bead—short
(PC trace) (0603)
Black multipurpose test points,
63 mil drill size
3.5mm, 3-position stereo SMT
phone jack (non switch)
Right-angle, PC-mount, white
RCA jacks
Right-angle, PC-mount, red RCA
jacks
2-pin headers
3-pin header
Not installed, inductors
Y102
1
DESIGNATION
OUT+, TPHPR
QTY
2
DESCRIPTION
Red multipurpose test points,
63-mill drill size
-20V, -2.4A p-channel MOSFET
(3 SuperSOT)
Fairchild FDN304PZ_NL
0I
Q5%
resistors (0402)
22I
Q5%
resistors (0402)
1.5kI
Q5%
resistors (0402)
220I
Q5%
resistor (0402)
Not installed, resistors (0402)
27I
Q5%
resistors (0402)
1kI
Q5%
resistor (0402)
White multipurpose test point,
63-mill drill size
Audio subsystem with I
2
C
(20 WLP)
Maxim MAX97003EWP+
32-bit microcontroller
(68 QFN-EP)
Maxim MAXQ2000-RAX+
Not installed, EEPROM (8 SO)
UART-to-USB converter
(32 TQFP)
3.3V, 120mA regulator (5 SC70)
Maxim MAX8511EXK33+T
2.5V, 120mA regulator (5 SC70)
Maxim MAX8510EXK25+T
1.8V, 300mA regulator (5 SOT23)
Maxim MAX8887EZK18+T
USB mini-B receptacle
16MHz crystal
Hong Kong X’tals
SSM16000N1HK188F0-0
6MHz crystal
Hong Kong X’tals
SSL60000N1HK188F0-0
USB high-speed A-to-mini-B
cable
Shunts
PCB: MAX97003 EVALUATION
KIT
P101
R1–R10, R101
R11, R12
R13, R14, R105
R102
R103, R104,
R109
R106, R107
R108
TPHPL
1
11
2
3
1
0
2
1
1
12
6
5
0
2
U1
1
C116
1
U101
U102
U103
U104
U105
U106
USB
Y101
1
0
1
1
1
1
1
1
C118, C119
2
C120
1
C125, C126
D101
FB101
HPGND, OUT-
HPJK
JINA1, JINB1
JINA2, JINB2
JU1, JU2, JU3
JU4
L1, L2
2
1
0
2
1
2
2
3
1
0
—
—
—
1
4
1
_________________________________________________________________
Maxim Integrated Products
2
MAX97003 Evaluation Kit
Evaluates: MAX97003
Component Suppliers
SUPPLIER
Fairchild Semiconductor
Hong Kong X’tals Ltd.
Murata Electronics North America, Inc.
PHONE
888-522-5372
852-35112388
770-436-1300
WEBSITE
www.fairchildsemi.com
www.hongkongcrystal.com
www.murata-northamerica.com
Note: Indicate that you are using the MAX97003 when contacting these component suppliers.
Quick Start
•
•
•
•
•
MAX97003 EV kit (USB cable included)
5V, 1A DC power supply (PVDD)
Speaker
Headphones
User-supplied Windows XP, Windows Vista, or
Windows 7 PC with an available USB port
Recommended Equipment
the first time. If a window is not seen that is similar to
the one described above after 30s, remove the USB
cable from the board and reconnect it. Administrator
privileges are required to install the USB device
driver on Windows.
10) Follow the directions in the
Found New Hardware
window to install the USB device driver. Refer to the
USB_Driver_Help_200.PDF document included with
the software for additional information.
11) Start the EV kit software by opening its icon in the
Start | Programs | Maxim EVKITSoftware
menu.
The EV kit software main window appears, as shown
in Figure 2.
12) Wait while the software connects to the EV kit. Once
the connection is established, the status bar at the
bottom displays
Hardware: Connected
and
Device
Found.
13) Once the EV kit software has initialized, select the
Control Panel
tab.
14) Click on the
Input A
drop-down menu in the
Input
PreAmp Gain
group box and select
0dB.
15) Check the
INA1
checkbox in the
HPL Mixer
group
box and the
INA2
checkbox in the
HPR Mixer
group
box.
16) Check the
HPL Enable
and
HPR Enable
check-
boxes.
17) Check the
Lock L&R HP Vol
checkbox to force the
left and right output volume to match.
18) Drag either horizontal slider in the
Headphone
Amplifiers
group box to
Max.
19) Check the
INA1
and
INA2
checkboxes in the
SPK
Mixer
group box.
20) Check the
SPK Enable
checkbox.
21) Drag the horizontal slider in the
Speaker Amplifier
group box to
Max.
22) Check the
Enabled
checkbox in the
MAX97003
Master Controls
group box. Audio is output to both
the headphone and speaker.
Note:
In the following sections, software-related items
are identified by bolding. Text in
bold
refers to items
directly from the EV kit software. Text in
bold and under-
lined
refers to items from the Windows operating system.
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation.
Caution: Do not turn on
the power supply until all connections are completed.
1) Visit
http://www.maxim-ic.com/evkitsoftware
to
download the latest version of the EV kit software,
97003Rxx.ZIP. Save the EV kit software to a tempo-
rary folder and uncompress the ZIP file.
2) Install the EV kit software on your computer by run-
ning the INSTALL.EXE program inside the temporary
folder. The program files are copied and icons are
created in the Windows
Start | Programs| Maxim
EVKIT Software
menu.
3) Verify that all jumpers are in their default positions, as
shown in Table 1.
4) Connect the power supply between the PVDD and
PGND PCB pads.
5) Set the power supply to 4.2V and turn it on.
6) Apply a stereo single-ended audio signal to INA1
and INA2.
7) Connect a speaker between the OUT+ and OUT- test
points.
8) Connect a headphone to HPJK.
9) Connect a USB cable between the PC and the Mini-
USB port on the EV kit. A
New Hardware Found
window pops up when installing the USB driver for
Procedure
_________________________________________________________________
Maxim Integrated Products
3
MAX97003 Evaluation Kit
Evaluates: MAX97003
Detailed Description of Software
The MAX97003 EV kit software GUI provides a conveni-
ent way to test the features of the MAX97003. Figure 2
displays the EV kit software’s Control Panel tab sheet,
while Figure 3 displays the Control Registers tab sheet.
Actions on either of these two tabs generate I
2
C com-
mands to update the device’s internal memory registers.
Graphical User Interface (GUI)
The EV kit software Control Panel tab sheet divides the
EV kit functions into logical blocks. The EV kit software
Control Registers tab sheet displays each register’s indi-
vidual bit logic-level status. A data bit in bold indicates
a logic-high, while a data bit that is not bold indicates a
logic-low. Clicking on the individual data bit toggles the
bit and performs a write command. The new command
is shown in the edit box at the right. Alternatively, write
commands can be written to the registers by typing a
hex value in the edit box and pressing the Enter key on
the keyboard.
Figure 2. MAX97003 EV Kit Software Main Window (Control Panel Tab)
_________________________________________________________________
Maxim Integrated Products
4
MAX97003 Evaluation Kit
Evaluates: MAX97003
Figure 3. MAX97003 EV Kit Software Main Window (Control Registers Tab)
_________________________________________________________________
Maxim Integrated Products
5
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