UNISONIC TECHNOLOGIES CO., LTD
PA4990
1.2W AUDIO POWER
AMPLIFIER WITH ACTIVE-LOW
SHUTDOWN MODE
DESCRIPTION
As a power amplifier which is operating on a single 5V supply,
the UTC
PA4990
is capable of delivering 1.2W of output power into
8Ω loads with less than 1% distortion.
The UTC
PA4990
is optimally suited for applications: Mobile
phones (cellular/cordless), notebook computers PDAs and Portable
audio devices.
The shutdown mode can reduce the supply current to less than
10nA. It also includes thermal shutdown protection internally. By
external gain setting resistors the gain can be configured.
CMOS IC
FEATURES
* Operating: V
CC
=2.2V ~ 5.5V
* 1.2W output power, V
CC
=5V, THD=1%, f=1kHz, 8Ω Load
* In shutdown mode: Ultra-low consumption (10nA)
* In grounded mode: 62dB PSRR @ 217Hz
* POP & CLICK near-zero
* Ultra-low distortion :0.1% (typ)
Lead-free:
PA4990L
Halogen-free:PA4990G
ORDERING INFORMATION
Normal
PA4990-S08-R
PA4990-SM1-R
Ordering Number
Lead Free
PA4990L-S08-R
PA4990L-SM1-R
Halogen Free
PA4990G-S08-R
PA4990G-SM1-R
Package
SOP-8
MSOP-8
Packing
Tape Reel
Tape Reel
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QW-R502-235.D
Copyright © 2009 Unisonic Technologies Co., Ltd
PA4990
PIN CONFIGURATION
CMOS IC
PIN DESCRIPTION
PIN NO
1
2
3
4
5
6
7
8
PIN NAME
SHUTDOWN
DESCRIPTION
Shutdown control input pin.
Connected to a bypass capacitor.
+ pin of input signal.
- pin of input signal.
Output pin1
Supply voltage
GND
Output pin2
BYPASS
+IN
-IN
V
OUT
1
V
DD
GND
V
OUT
2
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PA4990
ABSOLUTE MAXIMUM RATING
PARAMETER
CMOS IC
SYMBOL
RATINGS
UNIT
Supply Voltage
V
DD
6
V
Input Voltage
V
IN
GND ~ V
DD
V
Power Dissipation
P
D
Internally Limited
W
Junction Temperature
T
J
150
°С
Operating Temperature
T
OPR
-40~+85
°С
Storage Temperature
T
STG
-65~+150
°С
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
Junction to Ambient
Junction to Case
SYMBOL
θ
JA
θ
JC
MIN
TYP
MAX
150
35
UNIT
°С/W
°С/W
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, GND=0V, R
L
=8Ω, unless otherwise specified)
V
DD
=2.6V
PARAMETER
Supply Voltage
Output Offset Voltage
Shutdown Voltage
Supply Current
Shutdown Current
Output Power
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Wake-Up Time
Shutdown Time
V
DD
=3.3V
PARAMETER
Supply Voltage
Output Offset Voltage
Shutdown Voltage
Supply Current
Shutdown Current
Output Power
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Wake-Up Time
Shutdown Time
High
Low
SYMBOL
TEST CONDITIONS
V
DD
V
OS
No input signal
V
ST
I
DD
P
OUT
THD+N
PSRR
T
WU
T
STDB
No input signal, no load
THD=1% Max, f
IN
=1kHz
P
OUT
=400mW
RMS
, Av=2,
20Hz
≤
f
≤20kHz,
Av=2, V
RIPPLE
= 200mVpp,
Input Grounded
Cb=1μF, no load
Cb=1μF, no load
375
3.3
10
500
0.1
f=217Hz
f=1kHz
55
55
61
63
110
10
I
SHUTDOWN
No input signal, V
STDBY
=GND
1
SYMBOL
TEST CONDITIONS
V
DD
V
OS
No input signal
High
Low
V
ST
I
DD
P
OUT
THD+N
PSRR
T
WU
T
STDB
No input signal, no load
THD=1% Max, f
IN
=1kHz
P
OUT
=200mW
RMS
, Av=2,
20Hz
≤
f
≤20kHz
Av=2, V
RIPPLE
=200mVpp,
Input Grounded
Cb=1μF, no load
Cb=1μF, no load
MIN
2.2
TYP
1
3.1
10
220
300
0.1
f=217Hz
f=1kHz
55
55
60
62
125
10
TYP
1
MAX
5.5
10
1.2
0.4
6
1000
UNIT
V
mV
V
mA
nA
mW
%
dB
I
SHUTDOWN
No input signal, V
STDBY
=GND
150
ms
μs
MIN
2.2
MAX UNIT
5.5
V
10
mV
1.2
V
0.4
6
mA
1000
nA
mW
%
dB
140
ms
μs
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PA4990
ELECTRICAL CHARACTERISTICS(Cont.)
V
DD
=5V
PARAMETER
Supply Voltage
Output Offset Voltage
Shutdown Voltage
Supply Current
Shutdown Current
Output Power
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Wake-Up Time
Shutdown Time
High
Low
SYMBOL
TEST CONDITIONS
V
DD
V
OS
No input signal
V
ST
I
DD
P
OUT
THD+N
PSRR
T
WU
T
STDB
No input signal, no load
THD=1% Max, f
IN
=1kHz
P
OUT
=1W
RMS
, Av=2, 20Hz
≤
f
≤20kHz,
Av=2, V
RIPPLE
=200mV
PP
,
f=217Hz
Input Grounded
f=1kHz
Cb=1μF, no load
Cb=1μF, no load
0.9
55
55
3.7
10
1.2
0.2
62
64
90
10
I
SHUTDOWN
No input signal, V
STDBY
=GND
CMOS IC
MIN
2.2
TYP
1
MAX
5.5
10
1.3
0.4
6
1000
UNIT
V
mV
V
mA
nA
W
%
dB
130
ms
μs
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PA4990
BLOCK DIAGRAM
CMOS IC
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