UNISONIC TECHNOLOGIES CO., LTD PA4819

UNISONIC TECHNOLOGIES CO., LTD
PA4819
CMOS IC
350mW AUDIO POWER
AMPLIFIER WITH
SHUTDOWN MODE

DESCRIPTION
As a mono bridged power amplifier which is operating on a
single 5V supply, the UTC PA4819 is capable of delivering
350mWRMS of output power per channel into 16Ω loads with less
than 10% THD+N and also delivering 300mWRMS of output power
per channel into 8Ω loads with less than 10% THD+N.
The UTC PA4819 is optimally suited for low-power portable
applications because of the it do not require output coupling
capacitors, bootstrap capacitors or snubber networks.
By using external gain-setting resistors, the closed loop
response of the unity-gain stable PA4819 can be configured.

FEATURES
* Output power at 10% THD+N
Supply voltage:5V
Delivering 350mWRMS into a 16Ω load
Delivering 300mWRMS into a 8Ω load
* With shutdown mode
* Stable unity-gain.

ORDERING INFORMATION
Ordering Number
PA4819G-S08-R

Package
SOP-8
Packing
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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PA4819
CMOS IC

PIN CONFIGURATION

PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
SHUTDOWN
BYPASS
+IN
-IN
VOOT1
VDD
GND
VOOT2
I/O
I
I
I
O
O
PIN 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
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PA4819

CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
6
V
Input Voltage
VIN
-0.3~VDD+0.3
V
Power Dissipation
PD
Internally Limited
W
Junction Temperature
TJ
150
°С
Operating Temperature
TOPR
-40~+85
°С
Storage Temperature
TSTG
-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
θJA
θJC
MIN
TYP
MAX
170
35
UNIT
°С/W
°С/W
ELECTRICAL CHARACTERISTICS (TA=25C, RL=16Ω, unless otherwise specified)
For VDD=3V
PARAMETER
SYMBOL
TEST CONDITIONS
Supply Voltage
VDD
Shutdown voltage Input
VSDIH
High-Level
Shutdown voltage Input Low-Level VSDIL
DC Differential Output Voltage
VOUT(DIFF) VIN=0V
Mute Mode
VIN=0V, IOUT=0A
Supply Current
IDD
Shutdown Mode
VPIN1=VDD
THD=10%, fIN=1kHz, RL=16Ω,
Output Power
POUT
THD=10%, fIN=1kHz, RL=8Ω,
POUT=80mWRMS,
Total Harmonic Distortion+Noise THD+N
fIN=1kHz, G=2V/V
For VDD=5V
Supply Voltage
VDD
Shutdown voltage Input
VSDIH
High-Level
Shutdown voltage Input Low-Level VSDIL
DC Differential Output Voltage
VOUT(DIFF) VIN=0V
Mute Mode
VIN=0V,IOUT=0A
Supply Current
IDD
Shutdown Mode
VPIN1=VDD
THD=10%, fIN=1kHz, RL=16Ω,
Output Power
POUT
THD=10%, fIN=1kHz, RL=8Ω,
POUT=270mWRMS,
Total Harmonic Distortion+Noise
THD+N
fIN=1kHz, G=2V/V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
2.0
TYP
5
MAX
5.5
2.4
V
5
1.0
0.7
110
90
0.6
50
3.0
5
5
V
mV
mA
µA
mW
1
2.0
UNIT
V
%
5.5
4
V
V
5
1.5
1
350
300
1
1
50
3.0
5
V
mV
mA
µA
mW
%
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PA4819

CMOS IC
BLOCK DIAGRAM
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PA4819

CMOS IC
TYPICAL APPLICATION CIRCUIT
RL 8Ω
VDD
VOUT1
RF
20kΩ
20kΩ
-IN
RIN
20kΩ
20kΩ
+IN
VDD/2
AV=-1
VOUT2
CI
0.39µF
BIAS
Audio
Input
BYPASS
SHUTDOWN
CB
1.0µF
SHUTDOWN CONTROL
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GND
VIH
VIL
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CMOS IC
TYPICAL CHARACTERISTICS

Output Waveform
Output Waveform
8
8
VDD=5V, RL=16Ω
f=1KHz, THD=10%
6
4
4
2
2
Vp-p= 6.72
0
VDD=5V, RL=8Ω
f=1KHz, THD=10%
6
-2
-2
-4
-4
-6
-6
-8
Vp-p=4.60
0
-8
0
400
800
1200
1600
2000
Time (µs)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
0
400
800
1200
1600
2000
Time (µs)
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PA4819
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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