MAX98300EVKIT+WLP [MAXIM]
MAX98300 Evaluation Kit (WLP);
| 型号： | MAX98300EVKIT+WLP |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | MAX98300 Evaluation Kit (WLP) |
| 文件： | 总7页 (文件大小：2182K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-5272; Rev 0; 5/10
MAX98300 Evaluation Kit (WLP)
General Description
Features
S_ Demonstrates_Industry-Leading_Quiescent_
Current
1.1mA_(PVDD_=_5V),_0.78mA_(PVDD_=_3.7V)
The MAX98300 evaluation kit (EV kit) is a fully assembled
and tested circuit board that uses the MAX98300 filter-
less Class D amplifier to drive a speaker in portable
audio applications. The EV kit comes with a MAX98300
IC in a 9-bump, 0.4mm pitch wafer-level-package (WLP).
Designed to operate from a 2.6V to 5.5V DC power
supply, the EV kit is capable of delivering 2.6W into a
4I load. The EV kit accepts differential or single-ended
input signals.
S_ Filterless_Operation_Passes_Radiated_Emissions_
with_Up_to_60cm_of_Speaker_Cable
S_ 2.6V_to_5.5V_Single-Supply_Operation
S_ 2.6W_Mono_Class_D_Output
S_ Selectable_Gain_Control
S_ Differential_or_Single-Ended_Input
S_ Low-Power_Shutdown_Input
S_ Fully_Assembled_and_Tested
Ordering Information
PART
TYPE
MAX98300EVKIT+WLP
EV Kit
+Denotes lead(Pb)-free and RoHS compliant.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
0I Q5% resistors (0603)
2-pin header
MINIMAL_COMPONENTS_FOR_CUSTOMER_DESIGN
FB1, FB2
JU1
2
1
1
1
10FF Q20%, 6.3V X5R ceramic
capacitor (0603)
Murata GRM188R60J106M
C1
C2
1
1
2
1
JU2
3-pin header
JU3
4-way 5-pin header
0.1FF Q10%, 16V X7R ceramic
capacitor (0402)
Murata GRM155R71C104K
Not installed, inductors
Recommended:
TOKO #A916CY-220M
L1, L2
0
OUT+
OUT-
R1, R2
R3, R4
R5, R6
—
1
1
2
2
0
3
Standard PCB test point, red
Standard PCB test point, white
100kI Q5% resistors (0402)
22I Q5% resistors (0603)
Not installed, resistors (0402)
Shunts (JU1, JU2, JU3)
1FF Q10%, 10V X5R ceramic
capacitors (0402)
Murata GRM155R61A105K
C3, C4
U1
Mono Class D amplifier (9 WLP)
Maxim MAX98300EWL+
(Top Mark: +AIH)
OPTIONAL_COMPONENTS_FOR_CUSTOMER_
EVALUATION
PCB: MAX98300 EVALUATION
KIT+ (WLP)
—
1
Not installed, ceramic capacitors
(0603)
C5, C6
0
0.22FF Q10%, 25V X7R ceramic
capacitors (0603)
C7–C11
5
Murata GRM188R71E224K
_ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ _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.
MAX98300 Evaluation Kit (WLP)
Component Suppliers
SUPPLIER
Murata Electronics North America, Inc.
TOKO America, Inc.
PHONE
WEBSITE
770-436-1300
847-297-0070
www.murata-northamerica.com
www.tokoam.com
Note: Indicate that you are using the MAX98300EWL+ when contacting these component suppliers.
Quick Start
Recommended Equipment
Detailed Description of Hardware
The MAX98300 EV kit features the MAX98300 filterless
Class D amplifier IC, which is designed to drive a mono
speaker in portable audio applications. The EV kit comes
with a MAX98300 IC in a 9-bump, 0.4mm pitch WLP. The
EV kit operates from a DC power supply that provides
2.6V to 5.5V and 2A of current. The EV kit accepts a
differential or single-ended audio input. The audio input
source is amplified to drive 2.6W into a 4I speaker.
•
•
•
•
MAX98300 EV kit
2.6V to 5.5V, 2A DC supply
4I speaker
Mono audio signal source
Procedure
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.
Jumper JU1 configures the EV kit inputs for single-ended
or differential operation. Jumper JU2 enables or disables
the speaker amplifier. The amplifier overall gain can be
set between 0dB and +12dB using jumper JU3. The
EV kit provides a set of differential outputs. The device
outputs (OUT+, OUT-) can be connected directly to a
speaker load without any filtering and up to 60cm of
cable. However, filter components can be added to ease
evaluation. See the Output Filtering Options section for
additional information.
1) Verify that shunts are installed as follows:
JU1: Installed (single-ended input)
JU2: Pins 1-2 (device enabled)
JU3: Pins 1-5 (0dB gain)
2) Connect the power-supply positive and negative
outputs to the PVDD and PGND PCB pads on the
EV kit, respectively.
Input Mode
Jumper JU1 provides the option to select between a dif-
ferential or single-ended input mode for the EV kit. See
Table 1 for jumper JU1 configuration.
3) Verify that the audio source output is disabled.
4) Connect the mono audio source between the
INPUT+ and INPUT- pads on the EV kit.
5) Connect the speaker across the OUT+ and OUT-
test points.
Table_1._Input_Mode_(JU1)
SHUNT_
POSITION
INPUT-_PCB_PAD
INPUT_MODE
6) Set the power-supply output to 5V.
7) Enable the power-supply output.
8) Enable the audio source.
Single-ended
input
Installed*
Connected to PGND
Not
installed
Connected to a user-supplied
negative differential input
Differential
input
9) Verify that the speaker is playing the audio source
signal.
*Default position.
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MAX98300 Evaluation Kit (WLP)
Shutdown
Jumper JU2 enables or disables the audio speaker
amplifier. See Table 2 for jumper JU2 configuration.
Filterless Output
The EV kit’s filterless outputs (OUT+ and OUT-) can
be connected directly to a speaker load without any
filtering. Use the OUT+ and OUT- test points to connect
a speaker directly to the MAX98300 outputs. Inductors
L1 and L2 are not installed for maximum efficiency.
Gain Setting
The EV kit maximum signal gain can be configured to five
different settings. Jumper JU3 selects the overall gain for
the EV kit. See Table 3 for jumper JU3 configuration.
Output Filtering Options
To ease evaluation, the EV kit is shipped with inductor-
based output filters. To use the inductor-based output
filters, install inductors L1 and L2 (provided with the EV
kit).
Filtered Output
Audio analyzers typically cannot accept pulse-width-
modulated (PWM) signals at their inputs. Therefore, the
EV kit features a lowpass filter at its outputs to ease
evaluation. Install inductors L1 and L2 (provided with the
EV kit) and use the filtering output posts (FOUT+ and
FOUT-) to connect the filtered PWM outputs to the audio
analyzer. The default lowpass filter at the EV kit outputs
is optimized for an 8I speaker.
The IC passes CE EN55022B regulations with up to
60cm of speaker cable and no filtering. However,
ferrite-bead filters can be used to achieve further
attenuationofradiatedemissions.Toinstalltheferrite-bead
filters, verify that filter inductors L1 and L2 are not
installed. Next, replace shorting resistors FB1 and
FB2 with 0603 or smaller ferrite beads and install filter
capacitors on the C5 and C6 pads. The speaker wire
should be connected to the OUT+ and OUT- test points.
Table_2._Shutdown_(JU2)
Table_3._Gain_Setting_(JU3)
SHUNT_
POSITION
SHUNT_
POSITION
MAXIMUM_
GAIN_(dB)
AMPLIFIER
GAIN_PIN
SHDN_PIN
1-2*
Connected to PVDD
Connected to PGND
Enabled
Disabled
1-2
1-3
Connected to PVDD through R1
Connected to PVDD
+9
+12
+3
0
2-3
1-4
Connected to PGND through R2
Connected to PGND
*Default position.
1-5*
Open
Not connected
+6
*Default position.
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ_ _ 3
MAX98300 Evaluation Kit (WLP)
Figure 1. MAX98300 Customer Design Schematic (WLP)
4_ _ _ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ
MAX98300 Evaluation Kit (WLP)
Figure 2. MAX98300 EV Kit Schematic (WLP)
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ_ _ 5
MAX98300 Evaluation Kit (WLP)
1.0”
1.0”
Figure 3. MAX98300 EV Kit (WLP) Component Placement
Guide—Component Side
Figure 4. MAX98300 EV Kit (WLP) PCB Layout—Component
Side
1.0”
Figure 5. MAX98300 EV Kit (WLP) PCB Layout—Solder Side
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MAX98300 Evaluation Kit (WLP)
Revision History
REVISION
NUMBER
REVISION_
DATE
PAGES_
DESCRIPTION
CHANGED
0
5/10
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
7
©
2010 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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