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IS31AP2005 CLASS-D AUDIO AMPLIFIER
Integrated Silicon Solution, Inc. – www.issi.com 1
Rev. A, 01/09/2015
DESCRIPTION
The IS31AP2005 demo board is a fully assembled and
tested PCB that uses the IS31AP2005 Class-D power
amplifier to drive an 8Ω or 4Ω speaker in portable
audio applications. Designed to operate from a 2.7V to
5.5V DC power supply, the demo board accepts a
single-ended or differential input signal. The demo
board provides a BTL output capable of delivering
2.6W into a 4Ω speaker at 5V.
FEATURES
Supply voltage range from 2.7V to 5.5V
Delivers 2.6W into a 4Ω speaker at 5V supply
(THD+N=10%)
Delivers 1.8W into an 8Ω speaker at 5V supply
(THD+N=10%)
Available in MSOP-8 and DFN-8 packages
QUICK START
Figure 1: Photo of IS31AP2005 Evaluation Board
RECOMMENDED EQUIPMENT
5.0V, 2A power supply
Audio source (i.e. MP3 player, Notebook PC, etc.)
8Ω or 4Ω speaker
ABSOLUTE MAXIMUM RATINGS
≤ 5.5V power supply
Caution: Do not exceed the conditions listed above; otherwise
the board will be damaged.
PROCEDURE
The IS31AP2005 demo board is fully assembled and
tested. Follow the steps listed below to verify board
operation.
Caution: Do not turn on the power supply until all connections
are completed.
1) Connect a 4Ω (or larger) speaker across the OUT-
terminal and OUT+ terminal.
2) Connect the ground terminal of the power supply
to the GND and the positive terminal to the VCC.
Or connect DC power to connector (DC IN).
3) If the audio source is differential, remove jumper
JP1, connect the negative of the audio source to
the IN- terminal, and connect the positive of the
audio source to IN+ terminal.
4) If the audio source is single-ended, connect the
audio source to the IN+ terminal, and close
jumper JP1; or connect audio source to the audio
connector (AUDIO IN) and close jumper JP1.
5) Turn on the power supply.
6) Turn on the audio source.
ORDERING INFORMATION
Part No. Temperature Range Package
IS31AP2005-SLS2-EB -40°C ~ +85°C (Industrial) MSOP-8, Lead-free
Table 1: Ordering Information
For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at
analog@issi.com
or (408) 969-6600.
