MAX98303EVKIT+ Maxim Integrated Products, MAX98303EVKIT+ Datasheet - Page 2

• Manufacturer Part Number: MAX98303EVKIT+
• Description: Audio Modules & Development Tools MAX98303 KIT MAX98303 KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX98303EVKIT+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MAX98303 Evaluation Kit
Note: Indicate that you are using the MAX98303EWE+when contacting these component suppliers.
• MAX98303 EV kit
• 2.6V to 5.5V, 2A DC power supply
• Stereo audio input
• Two 4I speakers
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)
2)
3)
4)
5)
6)
7)
8)
9)
10) Enable the audio source.
11) Verify that the speakers are playing the audio
2_ _ _______________________________________________________________________________________
Murata Electronics North America, Inc.
TDK Corp.
TOKO America, Inc.
Verify that shunts are installed as follows:
Set the power-supply output to 5V. Disable the
power supply.
Connect the power-supply ground terminal to the
GND pad and the power-supply positive terminal to
the VDD pad of the EV kit.
With the audio source disabled, connect the left
channel of the audio source to the INL+ pad.
Connect the right channel of the audio source to the
INR+ pad.
Connect the audio source ground to the GND test
pad.
Connect the first speaker across the OUTL+ and
OUTL- test points.
Connect the second speaker across the OUTR+
and OUTR- test points.
Enable the power-supply output.
source signal.
JU1, JU4: Installed (single-ended input)
JU2:
JU3:
SUPPLIER
Pins 1-2 (device enabled)
Pins 1-3 (12dB gain)
Recommended Equipment
Quick Start
Procedures
770-436-1300
847-803-6100
847-297-0070
PHONE_
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.
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.
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.
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.
Table_1._JU1_and_JU4_Jumper_Selection
*Default position.
Not installed
Detailed Description of Hardware
POSITION
Installed*
SHUNT_
www.murata-northamerica.com
www.component.tdk.com
www.tokoam.com
Single-Ended/Differential Audio Inputs
negative differential input
AC-coupled to a
AC-grounded
user-supplied
Component Suppliers
IN_-_PIN
WEBSITE
Jumper Selection
Filterless Output
Filtered Output
Single-ended
OPERATION
Differential
DEVICE_
input
input