MAX98303EVKIT+ [MAXIM]
Evaluation Kit; 评估套件型号: | MAX98303EVKIT+ |
厂家: | MAXIM INTEGRATED PRODUCTS |
描述: | Evaluation Kit |
文件: | 总6页 (文件大小:839K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
19-5599; Rev 0; 10/10
MAX98303 Evaluation Kit
General Description
Features
Sꢀ 2.6V_to_5.5V_Single-Supply_Operation
Sꢀ Delivers_3.1W_Into_a_4I_Load
The MAX98303 evaluation kit (EV kit) is a fully assembled
and tested PCB that evaluates the MAX98303 stereo
3.1W Class D amplifier in a 16-bump, 0.4mm pitch
wafer-level package (WLP). The EV kit operates from
a single 2.6V to 5.5V DC power supply and is capable
of delivering 3.1W into a 4I load. The EV kit accepts
a differential or single-ended audio input and provides
differential outputs for the speaker. The device outputs
can be connected directly to a speaker load for filterless
applications; however, a filter can be added to ease
evaluation.
Sꢀ Single-Ended_or_Differential_Audio_Input
Sꢀ Five_Selectable_Gains
Sꢀ Filterless_Operation
Sꢀ Optional_Class_D_Output_Filters_for_Ease_of_
Evaluation
Sꢀ Low-Power_Shutdown_Input
Sꢀ Fully_Assembled_and_Tested
Ordering Information
PART
TYPE
MAX98303EVKIT+
EV Kit
+Denotes lead(Pb)-free and RoHS compliant.
Component List
DESIGNATION
QTY
DESCRIPTION
DESIGNATION
QTY
DESCRIPTION
3-pin header
JU2
JU3
1
1
0.1FF Q10%, 16V X7R
5-pin header
ceramic capacitor (0402)
Murata GRM155R71C104K
TDK C1005X7R1C104K
C1
1
Not installed, inductors—PCB
short
L1–L4
0
4
OUTL+, OUTL-,
OUTR+, OUTR-
10FF Q10%, 6.3V X7R
Test points
ceramic capacitor (0805)
Murata GRM21BR70J106K
TDK C2012X7R0J106K
C2
1
4
R1, R2
R3–R6
2
0
100kI Q5% resistors (0603)
Not installed, resistors (0603)
2.6W Class D amplifier
(16 WLP)
Maxim MAX98303EWE+
1FF Q10%, 25V X7R ceramic
capacitors (0603)
Murata GRM188R71E105K
Murata GRM188R71E105M
U1
1
C3, C4, C17, C18
—
—
4
1
Shunts (JU1–JU4)
Not installed, capacitors
(0603)
PCB: MAX98303
EVALUATION KIT+
C5–C16, C19, C20
FB1–FB4
0
4
OPTIONAL_COMPONENTS
0I resistors (0603)
FOUTL+, FOUTL-,
FOUTR+, FOUTR-,
GND, VDD
0.22FF Q10%, 25V X7R
ceramic capacitors (0603)
Murata GRM188R71E224K
TDK C1608X7R1E224K
6
1
Binding posts
C7–C16
10
White phono jack
(side-entry PCB mount)
INL
22FH Q20%, 1A inductors
TOKO A916CY-220M
L1–L4
R3–R6
4
4
Red phono jack
(side-entry PCB mount)
INR
1
2
22I Q5% resistors (0603)
JU1, JU4
2-pin headers
_ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ _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.
MAX98303 Evaluation Kit
Component Suppliers
SUPPLIER
Murata Electronics North America, Inc.
TDK Corp.
PHONE_
WEBSITE
www.murata-northamerica.com
www.component.tdk.com
www.tokoam.com
770-436-1300
847-803-6100
847-297-0070
TOKO America, Inc.
Note: Indicate that you are using the MAX98303EWE+when contacting these component suppliers.
Quick Start
Detailed Description of Hardware
Recommended Equipment
Filterless Output
The MAX98303 EV kit’s filterless outputs (OUTL+,
OUTL-, OUTR+, and OUTR-) can be connected directly
to a speaker load without any filtering. Use the OUTL+
and OUTL- test points or the OUTR+ and OUTR- test
points to connect the speaker directly to the device
output.
• MAX98303 EV kit
• 2.6V to 5.5V, 2A DC power supply
• Stereo audio input
• Two 4I speakers
Procedures
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.
Filtered Output
Audio analyzers typically cannot accept the Class D
amplifier’s pulse-width modulated (PWM) signals at their
inputs. Therefore, the EV kit features optional lowpass
filters at the outputs to ease evaluation. As shipped, the
EV kit’s lowpass filter RC components are unpopulated
and inductors L1–L4 are shorted on the PCB.
1) Verify that shunts are installed as follows:
JU1, JU4: Installed (single-ended input)
JU2:
JU3:
Pins 1-2 (device enabled)
Pins 1-3 (12dB gain)
To use the filtered output posts (FOUTL+, FOUTL-,
FOUTR+, and FOUTR-), remove the shorts on L1–L4
and install components L1–L4, C7–C16, and R3–R6
(provided separately with the EV kit). Use the output
posts to connect the filtered outputs to the audio
analyzer. The default lowpass filters at the EV kit output
are optimized for an 8I speaker.
2) Set the power-supply output to 5V. Disable the
power supply.
3) Connect the power-supply ground terminal to the
GND pad and the power-supply positive terminal to
the VDD pad of the EV kit.
Jumper Selection
4) With the audio source disabled, connect the left
channel of the audio source to the INL+ pad.
Single-Ended/Differential Audio Inputs
The EV kit features jumpers JU1 and JU4 to select
between a differential or single-ended input mode. See
Table 1 for JU1 and JU4 configuration.
5) Connect the right channel of the audio source to the
INR+ pad.
6) Connect the audio source ground to the GND test
pad.
Table_1._JU1_and_JU4_Jumper_Selection
7) Connect the first speaker across the OUTL+ and
OUTL- test points.
SHUNT_
POSITION
DEVICE_
OPERATION
INꢀ-_PIN
8) Connect the second speaker across the OUTR+
and OUTR- test points.
Single-ended
input
Installed*
AC-grounded
9) Enable the power-supply output.
10) Enable the audio source.
AC-coupled to a
user-supplied
negative differential input
Differential
input
Not installed
11) Verify that the speakers are playing the audio
source signal.
*Default position.
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MAX98303 Evaluation Kit
Shutdown Input (SHDN)
The EV kit features 3-pin jumper JU2 to control the
active-low shutdown input. Drive SHDN high to place the
device in normal operation; drive SHDN low to place the
device in the low-power shutdown mode. See Table 2 for
shunt positions.
Table_3._JU3_Jumper_Selection_(GAIN)
SHUNT_
POSITION
MAXIMUM_
GAIN_(dB)
GAIN_PIN
Connected to PVDD through
1-2
1-3*
1-4
9
100kI resistor R1
Connected to PVDD
12
15
18
6
Selectable Gain (GAIN)
The EV kit features 5-pin jumper JU3 to control the
device’s five programmable gain settings. See Table 3
for gain-control configuration.
Connected to GND through
100kI resistor R2
1-5
Connected to GND
Not
installed
Unconnected
Table_2._JU2_Jumper_Selection_(SHDN)
*Default position.
SHUNT_
POSITION
DEVICE_
OPERATION
SHDN_PIN
1-2*
2-3
Connected to PVDD
Connected to GND
Normal operation
Shutdown mode
*Default position.
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ_ _ 3
MAX98303 Evaluation Kit
Figure 1. MAX98303 EV Kit Schematic
4_ _ _ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ
MAX98303 Evaluation Kit
1.0”
1.0”
Figure 2. MAX98303 EV Kit Component Placement Guide—
Component Side
Figure 3. MAX98303 EV Kit PCB Layout—Component Side
1.0”
Figure 4. MAX98303 EV Kit PCB Layout—Solder Side
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MAX98303 Evaluation Kit
Revision History
REVISION
NUMBER
REVISION_
DATE
PAGES_
CHANGED
DESCRIPTION
0
10/10
Initial release
—
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.
6_____________________ ________ Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
©
2010 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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