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PDF AUD4990 Data sheet ( Hoja de datos )

Número de pieza AUD4990
Descripción 2W Audio Power Amplifier
Fabricantes Analog Express 
Logotipo Analog Express Logotipo



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No Preview Available ! AUD4990 Hoja de datos, Descripción, Manual

October 2008
AUD4990
2W Audio Power Amplifier with Selectable Shutdown
General Description
The AUD4990 is an audio power amplifier for mobile phone
and other portable electronic device applications. It can
deliver 1.3 watts of continuous average power to an 8 ohm
BTL (bridge tied load) and 2 watts of continuous average
power to a 4 ohm BTL, with less than 1% distortion from a 5V
DC power supply.
The AUD4990 is specifically designed to provide high output
power with a minimal amount of external components. It
requires no output coupling capacitors, for instance. Because
of its space-saving footprint, it perfectly meets the needs of
mobile phones, PDAs, notebook computers and other
low-voltage applications that require small power sources in
a small package.
The AUD4990 can offer a low standby current and a zero
shutdown current. Furthermore, the amplifier’s startup time is
fast enough to use its shutdown mode as a mute function.
The AUD4990 features circuitry that eliminates pop-and-click
noise whenever the device is turned on or off.
Key Specifications
Wide Power Supply
Voltage Range
Typical THD at 1W, 8
High PSRR
Low Quiescent Current
Features
Space Saving Thermal Package
Active High or Low Shutdown Mode
External Gain Configuration
Stable Unity Gain
Can Drive CL up to 200pF
Applications
Mobile Phones
PDAs
Notebook Computers
Portable Electronic Devices
2.7V < VDD < 5.5
0.2% (typ)
68 dB (typ)
2.5 mA (typ)
Typical Application
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Audio
Input
RF
20k
Ri
20 k
Ci
0.39µF
+
CB
1.0µF
Shutdown Control
Shutdown Mode ShutDown Status
GND
GND
V DD
V DD
0 Shutdown
1 On
0 On
1 Shutdown
- IN
+ IN
Bypass
+
CS
1.0µF
VDD
_
+
20k
20k
VDD/2
_
+
Shut D ow n
SD Mode
GND
VO1 -
VO2 +
RL
8
100
10
1
0.1
0.0110-4
10-3
10-2
10-1
Output Power (W)
100
Figure 1 Audio Power Amplifier with AV = 2
http://www.analogexpress.com
1
Figure 2 THD + N vs Output Power
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AUD4990 pdf
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the Analog Express Sales Office/Distributors
for availability and specifications.
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation
ESD Susceptibility
Junction Temperature
6.0V
-65°C to +150°C
-0.3V to VDD + 0.3V
Internally Limited
HBM 2000V
150°C
Thermal Resistance
θJC (DFN10 4x3)
θJA (DFN10 4x3)
θJC (DFN10 3x3)
θJA (DFN10 3x3)
63°C/W
12°C/W
55°C/W
10°C/W
Electrical Characteristics, VDD = 5V
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for TA = 25°C.
Symbol
Parameter
Conditions
AUD4990
Typical
Limit
IDD
ISD
VOS
ROUT
Quiescent Power Supply
Current
Shutdown Current
Output Offset Voltage
Resistor Output to GND
PO Output Power (8)
(4)
TWU Wake-up time
THD+N
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Total Harmonic
Distortion+Noise
PSRR
Power Supply Rejection Ratio
Efficiency
η
VIN = 0V, IO = 0A, No Load
VIN = 0V, IO = 0A, 8Load
VSD = VSD Mode
THD+N = 10% (max); f = 1kHz
THD+N = 1% (max); f = 1kHz
THD+N = 10% (max); f = 1kHz
THD+N = 1% (max); f = 1kHz
PO = 0.5W; f = 1kHz
VRIPPLE = 200mV sine p-p
Input terminated with 10
VDD = 5.0V, PO = 1W
2.5
3.5
0.1
8.5
1.6
1.2
2.5
2.0
0.2
60 (217Hz)
68 (1kHz)
63%
7.5
9
2.0
25
9.7
7.0
300
Electrical Characteristics, VDD = 3.7V
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for TA = 25°C.
Symbol
Parameter
Conditions
AUD4990
Typical
Limit
IDD
Quiescent Power Supply
Current
ISD Shutdown Current
VOS Output Offset Voltage
Output Power (8)
PO
(4)
VIN = 0V, IO = 0A, No Load
VIN = 0V, IO = 0A, 8Load
VSD = VSD Mode
THD+N = 10% (max); f = 1kHz
THD+N = 1% (max); f = 1kHz
THD+N = 10% (max); f = 1kHz
THD+N = 1% (max); f = 1kHz
3.5
4.5
0.1
0.75
0.65
1.3
1.0
7.5
9
2.0
25
http://www.analogexpress.com
5
Units
(Limits)
mA (max)
mA (max)
µA (max)
mV (max)
k(max)
k(min)
W
W
ms
%
dB
Units
(Limits)
mA (max)
mA (max)
µA (max)
mV (max)
W
W
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AUD4990 arduino
Package Dimensions
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