IS31AP2005 Datasheet, PDF (1/16 Pages) Integrated Silicon Solution, Inc – 2.95W MONO FILTER-LESS CLASS-D AUDIO POWER AMPLIFIER

IS31AP2005
2.95W MONO FILTER-LESS CLASS-D AUDIO POWER AMPLIFIER
GENERAL DESCRIPTION
The IS31AP2005 is a high efficiency, 2.95W mono
class-D audio power amplifier. A low noise, filter-less
PWM architecture eliminates the output filter, reducing
external component count, system cost, and
simplifying design.
Operating in a single 5V supply, IS31AP2005 is
capable of driving 4Ω speaker load at a continuous
average output of 2.95W with 10% THD+N. The
IS31AP2005 has high efficiency with speaker load
compared to a typical class AB amplifier.
In cellular handsets, the earpiece, speaker phone, and
melody ringer can each be driven by the IS31AP2005.
The gain of IS31AP2005 is externally configurable
which allows independent gain control from multiple
sources by summing signals from each function.
The IS31AP2005 is available in DFN and MSOP
packages.
FEATURES
 5V supply at THD = 10%
JULY 2011
 -2.95W into 4Ω (Typ.)
 -1.70W into 8Ω (Typ.)
 Efficiency at 5V:
 -83% at 400mW with a 4Ω speaker
 -89% at 400mW with an 8Ω speaker
 Optimized PWM output stage eliminates LC
output filter
 Fully differential design reduces RF rectification
and eliminates bypass capacitor
 Integrated pop-and-click suppression circuitry
 3mm × 3mm DFN-8 and MSOP-8 package
 RoHS compliant and 100% lead(Pb)-free
APPLICATIONS
 Wireless or cellular handsets and PDAs
 Portable DVD player
 Notebook PC
 Portable radio
 Educational toys
 USB speakers
 Portable gaming
TYPICAL APPLICATION CIRCUIT
Figure 1 Typical IS31AP2005 Application Schematic with Differential Input
Copyright © 2011 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any
time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are
advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the
product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not
authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. – www.issi.com
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Rev. A, 07/06/2011