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IS31AP2118 Datasheet, PDF (1/9 Pages) Integrated Silicon Solution, Inc – 15W STEREO CLASS-D AUDIO POWER AMPLIFIER
IS31AP2118
15W STEREO CLASS-D AUDIO POWER AMPLIFIER
Advanced Information
June 2012
GENERAL DESCRIPTION
The IS31AP2118 is a 15W, dual channel, Class-D
stereo driver in our audio amplifier family. It is suitable
for powering the audio components of various
equipments, including typical consumer electronics,
high performance audio speakers.
IS31AP2118 has several key features which
distinguishes itself from other alternatives on the
market. On-board AGC, EMI suppression, and 90%
typical operating efficiency are key features of this
part. EMI suppression circuit, which eliminates LC,
filters at the outputs. These features simplify customer
design, reduces system cost and PCB area.
The IS31AP2118 integrates automatic gain control
function with adjustable power limit. When output
power goes over the power limit, IS31AP2118 can
reduce gain automatically to pull down the output
power, so that keep the output power around power
limit while the input level is high. The IS31AP2118 has
short circuit and thermal protection features integrated
on board.
FEATURES
 Dual 12W, at 4Ω @ 1% THD, VCC=12V
 Dual 15W, at 8Ω @ 10% THD, VCC=16V
 Mono 20W, at 8Ω @ 10% THD, VCC =18V
 90% typical operating efficiency
 8V< VIN <26V
 Filter-less EMI suppression
 Integrated AGC with adjustable power limit
 Four selectable, gain preset levels: 20db, 26db,
32db, 36db
 High SNR, low THD+N
 Thermal and short-circuit protection
 Over/under-voltage protection
 De-pop circuitry
 TSSOP-28 package
APPLICATIONS
 Consumer Audio Equipment
 HDTV, Home Theater Equipment
 Automotive Audio Amplifier
 Performance Stereo Speakers
TYPICAL APPLICATION CIRCUIT
VCC
8V~26V
7
10 F
14
0.1 F
AVCC
MODE
PVCC
15,16
VCC
8V~26V
27,28
1F
470 F
Micro
Controller
1k
100k
Right Input
Left Input
13
MUTE
5
GAIN0
6
GAIN1
9
AVDD
10
AGCLMT
1
SDB
17
2
BSR+
FAULTB
18
OUTR+
19
IS31AP2118
PGND
20
OUTR-
21
CINR+
BSR-
1 F 12
11
CINR-
1F
INR+
INR-
CINL+
1F 3
26
BSL+
25
OUTL+
24
PGND
23
OUTL-
22
4
CINL-
INL+
INL-
BSL-
8
AGND
1F
0.22 F
1nF
33 H
33 H
0.22 F
1nF
0.22 F
1nF
33 H
33 H
0.22 F
1nF
Figure 1 Typical Application Circuit (Stereo Mode Application)
Integrated Silicon Solution, Inc. – www.issi.com
1
Rev. 00A, 06/10/2012
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