APA2603A
2.8W Stereo Class-D Audio Power Amplifier and Class AB Headphone
Driver (DC Volume Control, UVP, AGC Function)
Features
•
•
•
•
•
•
•
•
Operating Voltage: 3.3V-5.5V
High Efficiency 85% at P
O
=2.8W, 4Ω Speaker,
V
DD
=5V
Filter-Free Class-D Amplifier
Low Shutdown Current
- I
DD
=1µA at V
DD
=5V
64 Steps Volume Adjustable from -80dB to
+20dB by DC Voltage with Hysteresis
AGC (Non-Clip) Function
- Disable : 0.45VDD~VDD, Floating
- Max, Power : GND
UVP Function
- Disable : Floating
Output Power at THD+N=1%
BTL Mode
-
2.25W at V
DD
=5V, R
L
=4Ω
-
1.3W at V
DD
=5V, R
L
=8Ω
SE Mode
-
68mW at V
DD
=5V, R
L
=32Ω
Output Power at THD+N=10%
-
2.8W at V
DD
=5V, R
L
=4Ω
-
1.6W at V
DD
=5V, R
L
=8Ω
Less External Components Required
Two Output Modes Allowable with BTL and SE
Modes Selected by SE/BTL Pin
Input Signal and Headphone Output Signal in
Phase
Thermal and Over-Current Protections with
Auto-Recovery
Power Enhanced Packages SOP-24(300mil), Dip-
24(300mil)
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
The APA2603A is a stereo, high efficiency, filter-free Class-
D audio amplifier available in a SOP-24 package.
The APA2603A provide the precise DC volume control,
the gain range is from +20dB (V
VOLUME
=0V) to -80dB
(V
VOLUME
=5V) with 64 steps precise control. It’ easy to get
s
the suitable amplifier’ gain with the 64 steps gain setting.
s
The filter-free architecture eliminates the output filters
compared to the traditional Class-D audio amplifier, and
reduces the external component counts and the compo-
nents high, it could save the PCB space, system cost,
simplifies the design and the power loss at filter.
APA2603A provides an AGC (Non-Clip) function, and this
function can low down the dynamic range for large input
signal. APA2603A can provide from 20dB to -80dB with 64
steps gain decrease for non-clipping function, and this
function can avoid output signal clipping.
The APA2603A also integrates the de-pop circuitry that
reduces the pops and click noises during power on/off or
shutdown enable process.
The APA2603A has build-in over-current and thermal pro-
tection that prevent the chip being destroyed by short cir-
cuit or over temperature situation.
APA2603A combines a stereo bridge-tied loads (BTL)
mode for speaker drive and a stereo single-end (SE)
mode for headphone drive into a single chip, where both
modes are easily switched by the SE/BTL input control
pin signal.
APA2603A is capable of driving 2.8W at 5V into 4Ω
speaker. The efficiency can archived 85% at R
L
=4Ω when
P
O
=2.8W at V
DD
=5V.
APA2603A is capable of driving 60mW at 5V into 32Ω
Headphone
•
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Applications
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•
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LCD TVs
DVD Player
Active Speakers
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Mar., 2013
1
www.anpec.com.tw
APA2603A
Ordering and Marking Information
APA2603A
Lead Free Code
Handling Code
Temperature Range
Package Code
APA2603A
XXXXX
Package Code
K : SOP-24 J : DIP-24 QA : QFN4x4-20A
Operating Ambient Temperature Range
I : -40 to 85
o
C
Handling Code
TR : Tape & Reel
TU : Tube
Lead Free Code
G : Halogen and Lead Free Device
XXXXX - Date Code
APA2603A K :
APA2603A J :
APA2603A
XXXXX
XXXXX - Date Code
APA2603A QA :
A
APA2603
XXXXX
XXXXX - Date Code
Note : ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Absolute Maximum Ratings
(Note 1)
Symbol
V
DD
Parameter
Supply Voltage (VDD, PVDD, VDC to GND)
Input Voltage (LIN, RIN to GND)
Input Voltage (SD, MUTE, AGC, VDC, VOLUME and SE/BTL, BYPASS
to GND)
T
J
T
STG
T
SDR
P
D
Maximum Junction Temperature
Storage Temperature Range
Maximum Soldering Temperature Range, 10 Seconds
Power Dissipation
Rating
-0.3 to 6
-0.3 to V
DD
+0.3
-0.3 to V
DD
+0.3
150
-65 to +150
260
Internally Limited
W
ο
Unit
V
C
Note1: Stresses beyond those listed under
“absolute
maximum ratings” may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under
“recommended
operating conditions”is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
Thermal Characteristics
Symbol
θ
JA
Thermal Resistance -Junction to Case
(Note 3)
SOP-24
18
ο
C/W
DIP-24
50
QFN4x4-20A
7
Note 2: Please refer to “ Layout Recommendation”, the GND PIN on the central of the IC should connect to the ground plan, and the PCB
is a 2-layer, 5-inch square area with 2oz copper thickness.
Note 3: The case temperature is measured at the center of the GND PIN on the underside of the SOP-24 package.
θ
JC
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Mar., 2013
3
www.anpec.com.tw
Parameter
Thermal Resistance -Junction to Ambient
(Note 2)
Typical Value
SOP-24
DIP-24
QFN4x4-20A
96
50
45
Unit
ο
C/W
APA2603A
Recommended Operating Conditions
Symbol
V
DD
V
IH
Supply Voltage
SD, MUTE
High Level Threshold Voltage
SE/ BTL
SD, MUTE
V
IL
V
ICM
T
A
T
J
R
L
Low Level Threshold Voltage
Common Mode Input Voltage
Ambient Temperature Range
Junction Temperature Range
Speaker Resistance
SE/BTL
Parameter
Range
3.3 ~ 5.5
2 ~ V
DD
0.8 V
DD
~ V
DD
0~0.8
0~1.0
1 ~ V
DD
-1
-40 ~ 85
-40 ~ 125
3.5 ~
V
ο
Unit
V
C
Ω
Electrical Characteristics
V
DD
=5V, V
GND
=0V, T
A
= 25
ο
C, Gain=20dB (unless otherwise noted)
Symbol
I
DD
I
DD
I
MUTE
I
MUTE
I
SD
I
i
F
OSC
R
i
R
i
Parameter
Supply Current (BTL)
Supply Current (SE)
Supply Current (BTL)(MUTE)
Supply Current (SE)(MUTE)
Supply Current
Input Current
Oscillator Frequency
Input Resistance (BTL)
Input Resistance (SE)
Gain=20dB
Gain=3.5dB
V
DD
=5.5V,
I
L
=0.8A
P-channel Power
MOSFET
N-channel Power
MOSFET
P-channel Power
MOSFET
N-channel Power
MOSFET
P-channel Power
MOSFET
N-channel Power
MOSFET
Test Conditions
V
MUTE
=0V, V
/SD
=5V, No Load
V
MUTE
=0V, V
/SD
=5V, No Load
V
MUTE
=5V, V
/SD
=5V, No Load
V
MUTE
=5V, V
/SD
=5V, No Load
V
MUTE
=0V, V
/SD
=0V, No Load
SD, MUTE, VOLUME
APA2603A
Min.
-
-
-
-
-
-
400
31
51
-
-
-
-
-
-
-
Typ.
6.5
2.5
6.5
2.5
-
-
500
36
59
270
260
285
270
300
280
1.2
Max.
15
5
15
5
1
1
600
42
68
-
-
-
mΩ
-
-
-
2
s
kHz
kΩ
kΩ
Unit
mA
mA
mA
mA
µA
R
DSON
Static Drain-Source On-State
Resistance
V
DD
=4.5V,
I
L
=0.6A
V
DD
=3.6V,
I
L
=0.4A
T
START-UP
Start-Up Time from Shutdown
Bypass Capacitor, C
B
=2.2µF.
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Mar., 2013
4
www.anpec.com.tw
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