A Product Line of
Diodes Incorporated
PAM8403H
FILTERLESS 3W CLASS-D STEREO AUDIO AMPLIFIER
Description
The PAM8403H is a 3W, class-D audio amplifier. It offers low THD+N,
allowing it to achieve high quality sound reproduction. The new
filterless architecture allows the device to drive the speaker directly,
requiring no low-pass output filters, thus saving system cost and PCB
area.
With the same numbers of external components, the efficiency of the
PAM8403H is much better than that of class-AB cousins. It can
extend the battery life, ideal for portable applications.
The PAM8403H is available in SOP-16 package.
Pin Assignments
Features
3W Output at 10% THD with a 4 Load and 5V Power Supply
Filterless, Low Quiescent Current and Low EMI
Low THD+N
Superior Low Noise
Efficiency up to 90%
Short Circuit Protection
Thermal Shutdown
Few External Components to Save the
Space and Cost
Pb-Free Package
Applications
LCD Monitors / TV Projectors
Notebook Computers
Portable Speakers
Portable DVD Players, Game Machines
Cellular Phones/Speaker Phones
PAM8403H
Document number: DSxxxxx Rev. 1 - 0
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November 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
PAM8403H
Typical Applications Circuit
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
-OUT_L
PGND
+OUT_L
PVDD
MUTE
VDD
INL
VREF
NC
INR
GND
SHDN
PVDD
+OUT_R
PGND
-OUT_R
Left Channel Negative Output
Power GND
Left Channel Positive Output
Power V
DD
Mute Control Input（active low）
Analog V
DD
Left Channel Input
Internal analog reference, connect a bypass capacitor from VREF to GND
No connected
Right Channel Input
Analog GND
Shutdown Control Input (active low)
Power V
DD
Right Channel Positive Output
Power GND
Right Channel Negative Output
Function
PAM8403H
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© Diodes Incorporated
A Product Line of
Diodes Incorporated
PAM8403H
Functional Block Diagram
Absolute Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.)
These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may
affect device reliability. All voltages are with respect to ground.
Parameter
Supply Voltage Range
Input Voltage
Operation Temperature Range
Maximum Junction Temperature
Operation Junction Temperature
Storage Temperature
Soldering Temperature
Rating
6.0
-0.3 to V
DD
+0.3
-40 to +85
150
-40 to +125
-65 to 150
300, 5sec
Unit
V
°C
Recommended Operating Conditions
(@T
A
= +25°C, unless otherwise specified.)
Parameter
Supply Voltage Range
Operation Temperature Range
Junction Temperature Range
Rating
2.5 to 5.5
-40 to +85
-40 to +125
Unit
V
°C
°C
PAM8403H
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© Diodes Incorporated
A Product Line of
Diodes Incorporated
PAM8403H
Thermal Information
Parameter
Thermal Resistance (Junction to Ambient)
Thermal Resistance (Junction to Case)
Internal Power Dissipation (@ T
A
= +25°C)
Note:
Package
SOP-16
SOP-16
SOP-16
Symbol
θ
JA
θ
JC
P
D
Max
110
23
90
Unit
°C/W
mW
1. The maximun output current for SOT23-5 package is limited by internal power dissipation capacity as described in
Application Information here inafter.
Electrical Characteristics
(@T
A
= +25°C, V
DD
= 5V, Gain = 24dB, R
L
= 8Ω, unless otherwise specified.)
Symbol
V
IN
Parameter
Supply Voltage
THD+N = 10%,f = 1kHz , R
L
= 4Ω
P
O
Output Power
THD+N =1%, f = 1kHz, R
L
= 4Ω
THD+N =10%,f = 1kHz, R
L
= 8Ω
THD+N = 1%, f = 1kHz, R
L
= 8Ω
THD+N
G
V
PSRR
C
S
SNR
V
N
I
Q
I
MUTE
I
SD
V
OS
V
IH
V
IL
V
IH
V
IL
Total Harmonic Distortion
Plus Noise
Gain
Power Supply Ripple
Rejection
Crosstalk
Signal-to-Noise Ration
Output Noise
Quiescent Current
Muting Current
Shutdown Current
Output Offset Voltage
Enable Input High Voltage
Enable Input LowVoltage
MUTE Input High Voltage
MUTE Input Low Voltage
V
DD
= 5.0V, Inputs AC-grounded with
C
IN
= 0.47μF
V
DD
= 5V, P
O
= 0.5W, R
L
= 8Ω, G
V
= 20dB
V
DD
= 5V, V
ORMS
= 1V,G
V
= 20dB
V
DD
= 5V, Inputs AC-Grounded with
C
IN
= 0.47μF
V
DD
= 5.0V
V
DD
= 5.0V
V
DD
= 2.5V to 5.5V
V
IN
= 0V, V
DD
= 5V
V
DD
= 5.0V
V
DD
= 5.0V
V
DD
= 5.0V
V
DD
= 5.0V
1.5
0.4
1.5
0.4
f = 100Hz
f = 1kHz
f = 1kHz
f = 1kHz
A-weighting
No A-weighting
No load
V
MUTE
= 0.3V
V
SD
= 0.3V
10
74
V
DD
= 5.0V,P
O
= 0.5W, R
L
= 8Ω
V
DD
= 5.0V, P
O
= 1W, R
L
= 4Ω
V
DD
= 5.0V
V
DD
= 5.0V
V
DD
= 5.0V
V
DD
= 5.0V
f = 1kHz
f = 1kHz
23
Test Conditions
Min
2.5
2.85
2.25
1.5
1.2
3.20
2.50
1.8
1.4
0.15
0.15
24
-59
-58
-95
80
100
150
16
8
200
300
20
12
20
µV
mA
mA
µA
mV
V
V
V
V
0.20
0.20
25
-50
-50
-80
Typ
Max
5.5
Units
V
W
W
W
W
%
%
dB
dB
dB
dB
dB
PAM8403H
Document number: DSxxxxx Rev. 1 - 0
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November 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
PAM8403H
Typical Performance Characteristics
(@T
A
= +25°C, unless otherwise specified.)
PAM8403H
Document number: DSxxxxx Rev. 1 - 0
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November 2012
© Diodes Incorporated
stm32/stm8
