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PDF IS31AP4088A Data sheet ( Hoja de datos )
| Número de pieza | IS31AP4088A | |
| Descripción | DUAL 2.84W STEREO AUDIO AMPLIFIER PLUS HEADPHONE DRIVER | |
| Fabricantes | ISSI | |
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IS31AP4088A
DUAL 2.84W STEREO AUDIO AMPLIFIER PLUS HEADPHONE DRIVER
January 2012
GENERAL DESCRIPTION
KEY SPECIFICATIONS
The IS31AP4088A is a dual bridge-connected audio
power amplifier which, when connected to a 5V supply,
will deliver 2.84W to a 4Ω load.
To simplify audio system design, the IS31AP4088A
combines dual bridge speaker amplifiers and stereo
headphone amplifiers on one chip.
The IS31AP4088A features a low-power consumption
shutdown mode and thermal shutdown protection. It
also utilizes circuitry to reduce “clicks and pops” during
device turn-on.
APPLICATIONS
PO at 1% THD+N, VDD = 5V
RL = 4Ω ----------------------------- 2.30W (Typ.)
RL = 8Ω ----------------------------- 1.38W (Typ.)
PO at 10% THD+N, VDD = 5V
RL = 4Ω ----------------------------- 2.84W (Typ.)
RL = 8Ω ----------------------------- 1.71W (Typ.)
PO at 1% THD+N, VDD = 4V
RL = 4Ω ----------------------------- 1.40W (Typ.)
RL = 8Ω ----------------------------- 0.89W (Typ.)
Shutdown current ------------------ 0.04μA (Typ.)
Supply voltage range -------------- 2.7V ~ 5.5V
QFN-16(4mm × 4mm) package
Cell phones, PDA, MP4, PMP
Portable and desktop computers
Desktops audio system
Multimedia monitors
FEATURES
Suppress “click-and-pop”
Thermal shutdown protection circuitry
Stereo headphone amplifier mode
Micro power shutdown mode
TYPICAL APPLICATION CIRCUIT
INA
BNC C1
R1
0.22uF
20K
VCC
C3
R2
20K
4 INA
1uF
2,11
VDD
-
+
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SHUTDOWN
VCC
WORKING
15 SHUTDOWN
-OUTA 3
C5 100uF
9 BYPASS
C4
1uF
+OUTA 1
-
VCC
R7 100K
+
HP Sense 14
R8 100K
+
-
+OUTB 12
INB
BNC C2
R3
0.22uF
20K
8 INB
+
-
GND
5,6,7,13,16
-OUTB 10
C6 100uF
R5 1K
PHONEJACK(STEREO)
R6 1K
R4
20K
Figure 1 Typical Application Circuit
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/21/2011
1
datasheet pdf - http://www.DataSheet4U.net/
1 page  
IS31AP4088A
ELECTRICAL CHARACTERISTICS FOR SINGLE-ENDED OPERATION
The following specifications apply for VDD = 5V, unless otherwise noted. Limits apply for TA = 25°C.
Symbol
Parameter
Condition
Typ. Limit
Po
THD+N
Output power
Total harmonic
distortion+noise
PSRR
Power supply rejection
raito
Xtalk Channel separation
VNO Output noise voltage
THD+N = 0.5%,f = 1kHz
RL = 32Ω, SE mode
Po = 20mW, 1kHz, RL = 32Ω
Input floating, 217Hz, Vripple = 200mVp-p
C4 = 1μF, RL = 8Ω
Input floating 1kHz, Vripple = 200mVp-p
C4 = 1μF, RL = 8Ω
Input GND 217Hz, Vripple = 200mVp-p
C4 = 1μF, RL = 8Ω
Input GND 1kHz Vripple = 200mVp-p
C4 = 1μF, RL = 8Ω
f = 1kHz, C6 = 1μF
Stereo enhanced control = Low
1kHz, A-weighted
98.5
0.013
84
80
82
80
-68
20
83
Unit
mW(Min.)
%
dB
dB
dB
dB
dB
μV
ELECTRICAL CHARACTERISTICS
The following specifications apply for VDD = 3V, unless otherwise noted. Limits apply for TA = 25°C.
Symbol
Parameter
Condition
Typ. Limit
IDD
ISD
VIH_SDB
Quiescent power supply current
Shutdown current
Shutdown input voltage high
Vin = 0V, Io = 0A, BTL
Vin = 0V, Io = 0A, SE
GND applied to the shutdown pin
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5
2.6
0.02
1.4
Unit
mA
mA
μA
V(min)
VIL_SDB Shutdown input voltage low
0.4 V(max)
VIH_HPS HP sense input voltage high
3.8 V(min)
VIL_HPS
tWU
HP sense input voltage low
Turn on time
1μF bypass cap(C4)
2.8 V(max)
120 ms
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/21/2011
5
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
IS31AP4088A
+0
-20
-40
-60
A to B
-80
-100
B to A
-120
20 50 100 200 500 1k 2k 5k 20k
Figure 26 Crosstalk BTL mode, 5V, 8Ohm, Po=1W
+0
+0
-20
-40
-60
-80 A to B
-100 B to A
-120
20 50 100 200 500 1k 2k 5k 20k
Figure 27 Crosstalk BTL mode, 3V, 8Ohm, Po=0.3W
+0
-20 -20
-40
B to A
-60
A to B
-80
-40
-60
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-80
B to A
A to B
-100
20 50 100 200 500 1k 2k 5k 20k
Figure 28 Crosstalk SE mode, 5V, 32Ohm, Po=80mW
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 250 500 750 1000 1250
Output Power/mW
Figure 30 Power Dissipation vs. Output Power BTL mode, 5V, f=1
kHz, RL=8Ohm, THD+N<=1%
-100
20 50 100 200 500 1k 2k 5k
20k
Figure 29 Crosstalk SE mode, 3V, 32Ohm, Po=30mW
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
20 40 60
Output Power/mW
80
Figure 31 Power Dissipation vs. Output Power SE mode, 5V, f=1
kHz, RL=32Ohm
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/21/2011
11
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
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