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IS31AP2145A-UTLS2-TR

Description
audio amplifiers 2.9W audio amp w/ built-in agc
Categorysemiconductor    Other integrated circuit (IC)   
File Size517KB,14 Pages
ManufacturerAll Sensors
Environmental Compliance  
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audio amplifiers 2.9W audio amp w/ built-in agc

IS31AP2145A-UTLS2-TR Parametric

Parameter NameAttribute value
ManufactureISSI
Product CategoryAudio Amplifiers
ProducClass-D
TypeM
Output Powe2.9 W
THD plus Noise0.165 %
Maximum Operating Temperature+ 85 C
Mounting StyleSMD/SMT
Package / CaseUTQFN-9
PackagingReel
Gai18 dB
Factory Pack Quantity3000
IS31AP2145A
2.9W@5.0V MONO CLIP-LESS & FILTER-LESS CLASS-D
AUDIO POWER AMPLIFIER
December 2011
GENERAL DESCRIPTION
The IS31AP2145A is a 2.9W@5.0V mono, clip-less,
filter-less, high efficiency Class-D audio power
amplifier with automatic gain control.
The IS31AP2145A integrates AGC (Automatic Gain
Control) function to automatically prevent distortion of
the audio signal by which we can enhance audio
quality and also protect the speaker from damage at
high power levels. The AGC function and its attack
time/release time are selectable via the CTRL pin. The
IS31AP2145A also provides thermal and over current
protection functions.
In addition to these features, 90% high efficiency,
improved RF-rectification immunity, a fast start-up time
and small package size make IS31AP2145A ideal
choice for cellular handsets, PDAs and other portable
applications.
IS31AP2145A is available in a 1.5mm×1.5mm
UTQFN-9 package.
FEATURES
Filter-less Class-D architecture
AGC enable/disable function
2.9W into 4Ω at 5.0V (10% THD+N)
Power supply range: 2.7V to 5.5V
Selectable attack and release times
Minimum external components
High efficiency: 90%
Click-and-pop suppression
Low shutdown current: 0.1μA
Short-circuit and thermal protection
Space-saving UTQFN-9, 1.5mm × 1.5mm
APPLICATIONS
Wireless or cellular handsets and PDAs
Portable navigation devices
Portable DVD player
Notebook PC
Educational toys
USB speakers
Portable gaming
TYPICAL APPLICATION CIRCUIT
V
Battery
A2
0.1 F
VDD
VREF
B2
1 F
1 F
C
IN
33nF
A1
Differential In
C
IN
33nF
R
1
CTRL1
R
2
CTRL2
R
3
0.1 F
C1
IN+
IN-
OUT+
A3
IS31AP2145A
OUT-
C3
C2
CTRL
GND
B1,B3
Figure 1
Typical Application Circuit (Differential Input)
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 11/20/2011
1

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