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MAX9723DEVKIT+

P1-P3P4-P6P7-P9P10-P10
General Description
The MAX9723D evaluation kit (EV kit) is a fully assem-
bled and tested PCB that evaluates the MAX9723
stereo DirectDrive
TM
headphone amplifier with
BassMax, volume control, and I
2
C. The MAX9723D EV
kit operates from a single 1.8V to 3.6V power supply,
and is capable of delivering 60mW into a 16Ω load.
The MAX9723D evaluation system (EV system) includes
a MAX9723D EV kit, Windows 98SE/2000/XP-compati-
ble software, and a Maxim system command module.
The software’s graphical user interface (GUI) allows
easy control of the MAX9723D’s I
2
C interface, adjusting
settings such as BassMax and volume.
Order the complete EV system (MAX9723DEVC-
MODU+ or MAX9723DEVCMOD2+) for a comprehen-
sive evaluation of the MAX9723A/MAX9723B/
MAX9723C/MAX9723D using a PC. Order the EV kit
(MAX9723DEVKIT+) if the CMODUSB+ or CMOD232+
system command module has already been purchased
with a previous Maxim EV system, or for custom use in
other microcontroller-based (µC) systems.
The EV kit comes with the MAX9723DETE+ installed.
Contact the factory for free samples of the pin-compati-
ble MAX9723A/MAX9723B/MAX9723C to evaluate
these parts.
Windows is a registered trademark of Microsoft Corp.
Features
Single 1.8V to 3.6V Power-Supply Operation
60mW Stereo DirectDrive Headphone Outputs
(16
ΩΩ
, V
DD
= 3V)
System Command Module: USB Interface
(CMODUSB+) or Serial Interface (CMOD232+)
Windows
®
98SE/2000/XP-Compatible Evaluation
Software
Evaluates the MAX9723A/MAX9723B/MAX9723C
(with IC replacement)
Fully Assembled and Tested
Evaluate: MAX9723A/MAX9723B/MAX9723C/MAX9723D
MAX9723D Evaluation Kit/Evaluation System
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
PART
QTY
DESCRIPTION
M AX9723D E V KIT+
1 MAX9723D EV kit
CMODUSB+ 1
System command module
(USB serial interface)
PART
QTY
DESCRIPTION
M AX9723D E V KIT+
1 MAX9723D EV kit
CMOD232+ 1
System command module
(RS-232 serial interface)
PART TYPE INTERFACE
MAX9723DEVKIT+ EV kit
User-supplied I
2
C
interface
MAX9723DEVCMODU+
EV system
CMODUSB+ USB
interface board
MAX9723DEVCMOD2+
EV system
CMOD232+ RS-232
serial-interface board
MAX9723DEVCMODU+
Component List
MAX9723DEVCMOD2+
19-0662; Rev 0; 11/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
+
Denotes a lead-free and RoHS-compliant EV kit.
Note: The MAX9723D EV kit software is included with the
MAX9723D EV kit, but is designed for use with the complete EV
system. The EV system includes a Maxim system command
module (CMODUSB+ or CMOD232+) and the EV kit. If the
Windows software will not be used, the EV kit board can be pur-
chased without the Maxim system command module.
DESIGNATION
QTY
DESCRIPTION
C1, C9, C10
3
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104K
Murata GRM188R71C104K
C2, C3, C6 3
1µF ±10%, 10V X7R ceramic
capacitors (0603)
TDK C1608X7R1A105K
TDK C1608X7R1C105K
Murata GRM188R61A105K
C4, C5 2
0.47µF ± 10%, X 7R cer am i c
cap aci tor s ( 0603)
TD K C 1608X 7R1A474K ( 10V )
M ur ata G RM 188R71E 474KA12D ( 25V )
M ur ata G RM 188R71C 747KA88 ( 16V )
Kem et C 0603C 474K9RAC 7867 ( 6.3V )
MAX9723DEVKIT+
________________________________________________________________________________________
Quick Start
Recommended Equipment
• DC power supply (3.3V @ 0.5A)
• Stereo audio source (e.g., CD player, MP3 player, etc.)
•32Ω or 16Ω headphones
• MAX9723D EV system
MAX9723D EV kit
Maxim CMODUSB+ or CMOD232+ system
command module
• A user-supplied Windows 98SE/2000/XP PC
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
underlined refers to items from the Windows 98SE/
2000/XP operating system.
Procedure
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all con-
nections are complete.
1) Visit the Maxim website (www.maxim-ic.com/evkit-
software) to download the most recent version of
the EV kit software, 9723RXX.ZIP. Save the EV kit
software to a temporary folder and uncompress the
ZIP file.
2) Install the MAX9723D EV kit software on your com-
puter by running the INSTALL.EXE program inside
the temporary folder. The program files are copied
and icons are created in the Windows Start |
Programs menu.
3) Carefully connect the system command module to
the EV kit by aligning the 20-pin connector of the
MAX9723D EV kit with the 20-pin header of the
Maxim system command module interface board.
4) Enable the pullup resistors on the system command
module by making sure the SDA switch and SCL
switch (both on SW1) are thrown on.
5) If using Maxim’s serial-interface board (CMOD232+),
connect a 9-pin male-to-female cable from the com-
puter’s serial port to CMOD232+. CMOD232+
requires a 9V power supply to P1 (DC IN). For regu-
lated 3.3V output voltage, install a shunt across pins
1-2 of J1 on the CMOD232+. If using Maxim’s USB
interface board (CMODUSB+), connect the A-to-B
USB cable from the computer’s USB port to
CMODUSB+. CMODUSB+ requires no external
power as it is powered from the PC USB port. For reg-
ulated 3.3V output, install a shunt across pins 2-3 of
J1 on the CMODUSB+.
6) Ensure that a shunt is placed across pins 1-2 of
JU3 on the MAX9723D EV kit board.
Evaluate: MAX9723A/MAX9723B/MAX9723C/MAX9723D
MAX9723D Evaluation Kit/Evaluation System
2 _______________________________________________________________________________________
Note: Indicate that you are using the MAX9723D when
contacting these component suppliers.
DESIGNATION
QTY
DESCRIPTION
J1 1 2 x 10 right-angle receptacle
JU1, JU2, JU3
3 3-pin headers
PJ1 1
3.5mm stereo jack
(SMT, lead free, and RoHS)
CUI Inc. SJ-3523-SMT
R1, R2 2
10kΩ ±1% resistors (0603)
lead free
R3, R6 2
22.1kΩ ±1% resistors (0603)
lead free
R4, R5 2
47.5kΩ ±1% resistors (0603)
lead free
U1 1
MAX9723DETE+ (16-pin TQFN)
Stereo DirectDrive headphone
amplifier
— 3 Shunts
— 1 MAX9723D EV kit PCB
Component List (continued)
MAX9723DEVKIT+
SUPPLIER PHONE WEBSITE
Keystone
800-221-5510
www.keyelco.com
Murata
770-436-1300
www.murata.com
TDK
847-703-6100
www.component.tdk.com
Component Suppliers
FILE DESCRIPTION
INSTALL.EXE
Installs the EV kit files on your
computer
MAX9723V03.EXE Application program
PDF
USB driver installation help
file
FTD2XX.INF USB device driver file
UNINST.INI Uninstall the EV kit software
MAX9723D EV Kit Files
Evaluate: MAX9723A/MAX9723B/MAX9723C/MAX9723D
MAX9723D Evaluation Kit/Evaluation System
_______________________________________________________________________________________ 3
7) Connect a 3.3V power supply between the pads
labeled V
DD
and GND on the MAX9723D EV kit
board.
8) Ensure that the input audio source is turned off.
9) Connect the stereo audio source to the pads
labeled RIN, LIN, and GND on the MAX9723D EV
kit board.
10) Plug the headphones into the 3.5mm headphone
jack on the MAX9723D EV kit board.
11) Turn on the DC power supply.
12) Enable the audio source.
13) Start the MAX9723 program by opening its icon in the
Windows Start
menu. Select the device slave
address from the device pulldown menu. See Table 1.
Detailed Description of Software
Device Selection and Slave Address
The MAX9723 has an I
2
C-compatible interface that
allows serial communication between the MAX9723
and a microcontroller. The MAX9723 is available with
one of two preset slave addresses (see Table 1). The
MAX9723D EV kit ships with the MAX9723D. Change
IC U1 to evaluate other devices. Samples of other
MAX9723 devices are available through Maxim’s web-
site at www.maxim-ic.com.
The Device pulldown menu allows the user to select
the device slave address. Select the slave address of
the device being evaluated at startup. See Figure 2 for
details.
MAX9723 SLAVE ADDRESS
VERSION
A6 A5 A4 A3 A2 A1 A0 R/W
MAX9723A 1 0 0 1 1 0 0 X
MAX9723B 1 0 0 1 1 0 1 X
MAX9723C 1 0 0 1 1 0 0 X
MAX9723D* 1 0 0 1 1 0 1 X
*
EV kit IC version.
Table 1. MAX9723 Slave Address
Figure 1. MAX9723D EV Kit Software GUI Window
Figure 2. Device Selection and Slave Address
P1-P3P4-P6P7-P9P10-P10

MAX9723DEVKIT+

Mfr. #:
Buy MAX9723DEVKIT+
Manufacturer:
Maxim Integrated
Description:
Audio IC Development Tools MAX9723A/B/C/D Eval Kit
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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