MAX98300EVKIT+TDFN Maxim Integrated Products, MAX98300EVKIT+TDFN Datasheet - Page 3

• Manufacturer Part Number: MAX98300EVKIT+TDFN
• Description: Audio Modules & Development Tools MAX98300 KIT MAX98300 KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX98300EVKIT+TDFN

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

Jumper JU2 provides the option to select between a dif-
ferential or single-ended input mode for the EV kit. See
Table 2 for jumper JU2 configuration.
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.
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+,
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.
Table 2. Input Mode (JU2)
*Default position.
POSITION
Installed*
installed
SHUNT
Not
Connected to a user-supplied
negative differential input
_______________________________________________________________________________________
Connected to PGND
INPUT- PCB PAD
MAX98300 Evaluation Kit (TDFN)
Filtered Output
Gain Setting
Input Mode
Single-ended
Differential
INPUT
MODE
input
input
The EV kit’s filterless outputs (OUT+, 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 device outputs. Inductors L1
and L2 are not installed for maximum efficiency.
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).
The device passes CE EN55022B regulations with up
to 60cm of speaker cable and no filtering. However,
ferrite-bead filters can be used to achieve further
attenuation of radiated emissions. To install the ferrite-bead
filters, verify that filter inductors L1 and L2 are not
installed. Next, replace shorting resistors FB1 and
FB2 with 0805 or smaller ferrite beads and install filter
capacitors on the C3 and C4 pads. The speaker wire
should be connected to the OUT+ and OUT- test points.
Table 3. Gain Setting (JU3)
*Default position.
POSITION
SHUNT
Open
1-5*
1-2
1-3
1-4
Connected to PVDD through R3
Connected to PVDD
Connected to PGND through R4
Connected to PGND
Not connected
GAIN PIN
Output Filtering Options
Filterless Output
MAXIMUM
GAIN (dB)
+12
+9
+3
+6
0
3