IS31AP4088A CLASS-AB AUDIO AMPLIFIER
Integrated Silicon Solution, Inc. – www.issi.com 1
Rev. A, 01/09/2015
DESCRIPTION
The IS31AP4088A demo board is a fully assembled
and tested PCB that uses the IS31AP4088A Class-AB
combines dual bridge speaker amplifiers and stereo
headphone amplifiers on one chip. Designed to drive
speaker impedance of 4Ω or larger. The demo board
provides dual BTL output, capable of delivering 2.84W
into a 4Ω speaker
at 5V.
FEATURES
Supply voltage range from 2.7V to 5.5V
Delivers 2.84W into a 4Ω speaker at 5V supply
(THD+N=10%).
Delivers 1.71W into an 8Ω speaker at 5V supply
(THD+N=10%)
Available in QFN-16 (4mm × 4mm) package
QUICK START
Figure 1: Photo of IS31AP4088A Evaluation Board
RECOMMENDED EQUIPMENT
5.0V, 2A power supply
Audio source (i.e. MP3 player, Notebook PC, etc.)
A pair of 8Ω or 4Ω speaker
ABSOLUTE MAXIMUM RATINGS
≤ 5.5V power supply
≥4ohm speaker
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
PROCEDURE
The IS31AP4088A 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 4Ω (or larger) speakers across the
(OUTA+, OUTA-) terminal and (OUTB+, OUTB-)
terminal. Or connect speakers to the connector
(OUTA, OUTB).
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 CON).
3) Connect the audio sources to the INA terminal
(left channel) and INB terminal (right channel); or
connect audio sources to the connector (AUDIO
IN).
4) Turn on the power supply.
5) Turn on the audio sources.
ORDERING INFORMATION
Part No. Temperature Range Package
IS31AP4088A-QFLS2-EB -40°C to +85°C (Industrial) QFN-16, 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.
