ISIS31AP4991 Datasheet, PDF (1/5 Pages) Integrated Silicon Solution, Inc – Near-zero click-and-pop

IS31AP4991A 1.1W AUDIO POWER AMPLIFIER
WITH ACTIVE-LOW SHUTDOWN MODE
DESCRIPTION
The IS31AP4991A has been designed for demanding
audio applications such as mobile phones and permits
the reduction of the number of external components. It
is capable of delivering 1.1W of continuous RMS
output power into an 8Ω load @ 5V.
An externally-controlled standby mode reduces the
supply current to much less than 1μA. It also includes
internal thermal shutdown protection. The unity-gain
stable amplifier can be configured by external gain
setting resistors.
RECOMMENDED EQUIPMENT
 5.0V, 1A power supply
 Audio source (i.e. MP3 player, Notebook PC, etc.)
 8Ω speakers
ABSOLUTE MAXIMUM RATINGS
 ≤ 5.5V power supply
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
FEATURES
 Operating from V_CC = 2.7V ~ 5.5V
 1.1W output power @ V_CC = 5V, THD+N= 1%,
f = 1kHz, with 8Ω load
 Ultra-low consumption in standby mode (much
less than 1μA)
 56dB PSRR @217Hz in grounded mode
 Near-zero click-and-pop
 Ultra-low distortion (0.074%@0.5W, 1kHz)
 SOP-8 and MSOP-8 package
QUICK START
PROCEDURE
The IS31AP4991A evaluation 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 an 8Ω (or larger) speaker across the
OUT- terminal and OUT+ terminal. Or connect
speaker to the connector (AUDIO OUT).
2) Connect the ground terminal of the power supply
to the GND and the positive terminal to the VCC.
Or connect DC power to the connector (DC
INPUT).
3) If the audio source is differential, 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, C3 and R1
should disconnect, and R3 should be 0Ω.
Connect the audio source to the IN- terminal, or
connect audio source to the connector (AUDIO
INPUT).
5) Turn on the power supply.
6) Turn on the audio source.
Figure 1: Photo of IS31AP4991A Evaluation Board
ORDERING INFORMATION
Part No.
IS31AP4991A-GRLS2-EB
IS31AP4991A-SLS2-EB
Temperature Range
-40°C ~ +85°C (Industrial)
Package
SOP-8, Lead-free
MSOP-8, Lead-free
Table1: Ordering Information
For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at
[e-mail] or [phone].
Integrated Silicon Solution, Inc. – www.issi.com
1
Rev. A, 12/31/2014