MAX13331EVKIT+ Maxim Integrated Products, MAX13331EVKIT+ Datasheet - Page 2

• Manufacturer Part Number: MAX13331EVKIT+
• Description: Power Management Modules & Development Tools MAX13331 EVAL KIT MAX13331 EVAL KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX13331EVKIT+

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

MAX13331 Evaluation Kit
•
•
•
The MAX13331 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) Plug the headphones into the 3.5mm headphone
2) Ensure that the stereo audio source is turned off.
3) Connect the disabled stereo audio source through
4) Ensure that a shunt is installed on jumper JU1.
5) Connect the 4V to 5.5V DC power supply to the
6) Turn on the DC power supply.
7) Verify that the audio source level is low.
8) Enable the stereo audio source.
9) Verify that the audio source signal is clearly heard
Note: Indicate that you are using the MAX13331 when contacting these component suppliers.
2
Murata Electronics North America, Inc.
TDK Corp.
One pair of 8Ω to 32Ω headphones
One variable DC power supply capable of supply-
ing between 4V and 5.5V at 500mA
One stereo audio source
_______________________________________________________________________________________
jack (J1).
the RCA phono jacks (P1 and P2).
VDD and PGND pads.
from the headphones.
SUPPLIER
Required Equipment
Quick Start
Procedure
770-436-1300
847-803-6100
PHONE
The MAX13331 EV kit is a stereo, single-supply head-
phone amplifier. The input impedance is 15kΩ. The
-3dB corner frequencies are approximately 10Hz and
greater than 22kHz and are dependent on components
R1/C1 and R2/C2. The MAX13331 EV kit has a gain of
approximately 1.5 and can be powered with a 4V to
5.5V supply
The EV kit provides two RCA phono jacks (P1 and P2)
to facilitate the connection of an audio source. In addi-
tion, both outputs (OUTL and OUTR) are routed to a
stereo headphone jack (J1), facilitating output monitor-
ing. Shutdown control of OUTL and OUTR is also pro-
vided through jumper JU1.
The MAX13331 EV kit provides jumper JU1 to disable
the outputs, OUTL and OUTR (see Table 1 for shut-
down shunt positions). Both OUTL and OUTR are rout-
ed to the headphone jack (J1).
To optimize the audio performance of the MAX13331, it is
important to follow these layout guidelines. The MAX13331
EV kit uses two ground planes to minimize switching noise.
The two planes are star-connected at one point (JU2 pad).
Capacitors C5, C6, C8, C12, C13, and C14 should be
placed close to the IC. Refer to the MAX13331 IC data
sheet for additional layout considerations.
The MAX13331 EV kit is a four-layer design, but it is
possible to design the MAX13331 circuit on to a two-
layer board. For a two-layer design, optimize the signal
and power ground planes by maximizing the area and
connecting each plane, as close as possible, to its
respective IC pin.
Table 1. Jumper JU1 Function
Detailed Description of Hardware
SHUNT POSITION
Not installed
Installed
www.murata-northamerica.com
www.component.tdk.com
Component Suppliers
Layout Considerations
WEBSITE
Shutdown Control
Outputs disabled
Outputs enabled
DESCRIPTION