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PDF IS31AP4991 Data sheet ( Hoja de datos )
| Número de pieza | IS31AP4991 | |
| Descripción | 1.2W AUDIO POWER AMPLIFIER | |
| Fabricantes | ISSI | |
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IS31AP4991
1.2W AUDIO POWER AMPLIFIER WITH ACTIVE-LOW STANDBY MODE
November 2011
GENERAL DESCRIPTION
The IS31AP4991 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 1.2W 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.
FEATURES
Operating from VCC = 2.7V ~ 5.5V
1.2W output power @ VCC = 5V, THD+N= 1%,
f = 1kHz, with 8Ω load
Ultra-low consumption in standby mode (much
less than 1μA)
65dB PSRR @217Hz in grounded mode
Near-zero click-and-pop
Ultra-low distortion (0.025%@0.5W, 1kHz)
SOP-8 and MSOP-8 package
APPLICATIONS
Mobile phones
PDAs
Portable electronic devices
Notebook computer
TYPICAL APPLICATION CIRCUIT
Rfeed
20kΩ
Cfeed
Cin Rin
0.22uF 20kΩ
Vin-
Vin+
-
+
Vcc
Vcc
http://www.DataSheet4U.net/
Vout1
+ Cs
1uF
Standby
Control
Cb +
1uF
Bypass
Standby
Bias
GND
-
AV = -1
+
Figure 1 Typical Application Circuit
Vout2
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 11/22/2011
1
datasheet pdf - http://www.DataSheet4U.net/
1 page  
IS31AP4991
TYPICAL PERFORMANCE CHARACTERISTIC
10
Vcc = 3V
5 RL = 8Ω
2 f = 1kHz
1
0.5
0.2
0.1
0.05
0.02
0.01
10m 20m
50m 100m 200m 500m
Output Power (W)
Figure 2 THD+N vs. Output Power
10
5 Vcc = 3V
RL = 8Ω
2 Power=250mW
1
0.5
1
0.2
0.1
0.05
0.02
0 . 0 12 0
50 100 200 500 1k 2k
Frequency (Hz)
Figure 4 THD+N vs. Frequency
5k
10
Vcc = 5V
5 RL = 8Ω
2 f = 1kHz
1
0.5
0.2
0.1
0.05
0.02
0.01
2 10m 20m 50m 100m 200m 500m 1
Output Power (W)
Figure 3 THD+N vs. Output Power
10
5 Vcc = 5V
RL = 8Ω
2 Power=800mW
1
0.5
0.2
0.1
0 . 0 5http://www.DataSheet4U.net/
0.02
20k 0.0120 50 100 200 500 1k 2k 5k
Frequency (H z)
Figure 5 THD+N vs. Frequency
2
20k
Figure 6 PSRR vs. Frequency
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 11/22/2011
Figure 7 PSRR vs. Frequency
5
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
IS31AP4991
PACKAGE INFORMATION
SOP-8
http://www.DataSheet4U.net/
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 11/22/2011
11
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet IS31AP4991.PDF ] | |
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