APA2071
Stereo 3.1W Non-inverting Audio Power Amplifier(with DC Volume Control)
Features
•
•
•
•
•
Non-Inverting Audio Power Amplifier
Low Operating Current about 9mA (Typical)
Improved Depop Circuitry to Eliminate Turn-On
and Turn-Off Transients in Outputs
32-Step Volume Adjustable by DC Voltage
with Hysteresis
Output Power
at 1% THD+N
- 2.4W, at V
DD
=5V, BTL Mode, R
L
=3Ω
- 2W, at V
DD
=5V, BTL Mode, R
L
=4Ω
at 10% THD+N
- 3.1W, at V
DD
=5V, BTL Mode, R
L
=3Ω
- 2.6W, at V
DD
=5V, BTL Mode, R
L
=4Ω
Two Output Modes: BTL and SE Modes Selected
by SE/BTL Pin
Low Current Consumption in Shutdown Mode
(1µA, Typical)
Short Circuit Protection
Thermal Shutdown Protection and Over Current
Protection Circuitry
General Description
The APA2071 is a monolithic integrated circuit, which
provides precise DC volume control, and a stereo
bridged audio power amplifiers capable of producing
2.6W (2W) into 4Ω with less than 10% (1.0%) THD+N.
The attenuator range of the volume control in APA2071 is
from 18dB (V
VOLUME
=0V) to -80dB (V
VOLUME
=3.54V) with 32
steps. The advantage of internal gain setting can be less
components and PCB area. Both the depop circuitry and
the thermal shutdown protection circuitry are integrated
in the APA2071, that reduce pops and clicks noise dur-
ing power up or shutdown mode operation. It also im-
proves the power off pop noise and protects the chip be-
ing destroyed by over temperature and short current
failure. To simplify the audio system design, the APA2071
combines a stereo bridge-tied load (BTL) mode for
speaker drive and a stereo single-end (SE) mode for head-
phone drive into a single chip, where both modes are
easily switched by the SE/BTL input control pin signal.
•
•
•
•
•
•
•
Applications
•
•
Notebook PC
LCD Monitor or TV
The OUTN Signal and the INN Signal are Inphase
Power Enhanced Package (DIP-16 / DIP-16A)
Lead Free and Green Devices Available
(RoHS Compliant)
Simplified Application Circuit
L-CH
Input
R-CH
Input
LINN
LOUTN
Stereo
Speaker
LOUTP
Stereo
Headphone
RINN
APA2071
ROUTN
DC Volume
Control
VOLUME
ROUTP
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.3 - Nov., 2008
1
www.anpec.com.tw
APA2071
Ordering and Marking Information
APA2071
Assembly Material
Handling Code
Temperature Range
Package Code
APA2071 J :
APA2071
XXXXX
Package Code
J : DIP-16 / DIP-16A
Operating Ambient Temperature Range
I : - 40 to 85
°
C
Handling Code
TU : Tube
Assembly Material
L : Lead Free Device G : Halogen and Lead Free Device
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).
Pin Configuration
SHUTDOWN
BYPASS
RINN
GND
GND
LINN
VOLUME
SE/BTL
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
ROUTP
VDD
ROUTN
GND
GND
LOUTN
VDD
LOUTP
APA2071
Absolute Maximum Ratings
Symbol
V
DD
Supply Voltage (VDD to GND)
(Note 1)
Rating
-0.3 to 6
-0.3 to V
DD
+ 0.3
-0.3 to V
DD
+ 0.3
-40 to 85
150
-65 to +150
260
Internally Limited
Unit
V
V
V
ο
ο
ο
Parameter
Input Voltage
(SE/BTL,
SHUTDOWN, VOLUME, RINN, LINN to GND)
Output Voltage (LOUTN, LOUTP, ROUTP, ROUTN to GND)
T
A
T
J
T
STG
T
SDR
P
D
Operating Ambient Temperature Range
Maximum Junction Temperature
Storage Temperature Range
Maximum Lead Soldering Temperature, 10 Seconds
Power Dissipation
C
C
C
C
ο
W
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Thermal Characteristics
Symbol
θ
JA
θ
JC
Parameter
Junction-to-Ambient Resistance in Free Air
(Note 2)
Junction-to-Case Resistance in Free Air
(Note 3)
Typical Value
45
8
Unit
o
o
C/W
C/W
Note 2:
θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air.
Note 3: The case temperature is measured at the center of the GND pin on the beside of the DIP-16 / DIP-16A package.
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Nov., 2008
2
www.anpec.com.tw
APA2071
Recommended Operating Conditions
Symbol
V
DD
V
IH
Supply Voltage
High Level Threshold Voltage
SHUTDOWN
SE/BTL
V
IL
V
CIM
T
A
T
J
R
L
R
L
Low Level Threshold Voltage
Common Mode Input Voltage
Ambient Temperature Range
Junction Temperature Range
Speaker Resistance
Headphone Resistance
SHUTDOWN
SE/BTL
Parameter
(Note 4)
Range
3.3 ~ 5.5
0.4V
DD
~ V
DD
0.8V
DD
~ V
DD
0 ~ 1.0
0 ~ 1.0
~ V
DD
-1.0
-40 ~ 80
-40 ~ 125
3~
16 ~
ο
Unit
V
C
Ω
Note 4 : Refer to the typical application circuit
Electrical Characteristics
Unless otherwise specified, these specifications apply over V
DD
=5V, V
GND
=0V and T
A
= -40 ~ 85
o
C. Typical values are at T
A
=25
o
C.
Symbol
Parameter
Test Conditions
Min.
V
SE/BTL
=0V
-
-
-
-
-
APA2071
Typ.
9
4
1
1.6
20
Max.
20
10
-
-
-
Unit
I
DD
I
SD
T
START-UP
R
i
Supply Current
Shutdown Current
Start-Up Time from Shutdown
Input Resistance
V
SE/BTL
=5V
V
SE/BTL
=0V, V
SHUTDOWN
=0V
C
BYPASS
=2.2µF
mA
s
kΩ
BTL MODE. V
DD
=5V, GAIN=6dB (UNLESS OTHERWISE NOTED)
V
DD
=5.5V,THD+N=3%, R
L
=3Ω
THD+N=10%, R
L
=3Ω
THD+N =10%, R
L
=4Ω
P
O
Output Power, f
in
=1kHz
THD+N =10%, R
L
=8Ω
THD+N =1%, R
L
=3Ω
THD+N =1%, R
L
=4Ω
THD+N =0.5%, R
L
=8Ω
THD+N
Total Harmonic Distortion Pulse
Noise
Power Supply Rejection Ratio
Channel Separation
P
O
=1.2W, R
L
=4Ω, f
in
=1kHz
P
O
=0.9W, R
L
=8Ω, f
in
=1kHz
V
DD
Ripple=0.1Vrms, R
L
=8Ω,
C
BYPASS
=2.2µF, f
in
=217Hz
C
BYPASS
=2.2µF, R
L
=8Ω,
f
in
=1kHz
-
-
-
-
-
-
1
-
-
-
-
3.1
3.1
2.6
1.6
2.4
2
1.3
0.09
0.12
60
90
-
-
-
-
-
-
-
-
%
-
-
-
dB
dB
W
PSRR
Crosstalk
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Nov., 2008
3
www.anpec.com.tw
APA2071
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over V
DD
=5V, V
GND
=0V and T
A
= -40 ~ 85
o
C. Typical values are at T
A
=25
o
C.
Symbol
Parameter
Test Conditions
Min.
APA2071
Typ.
Max.
Unit
BTL MODE. V
DD
=5V, GAIN=6dB (UNLESS OTHERWISE NOTED) (CONT.)
V
OS
S/N
Output Offset Voltage
Signal to Noise Ratio
R
L
=4Ω
P
O
=1.1W, R
L
=8Ω, A_weighting
-
-
5
95
-
-
mV
dB
SE MODE. V
DD
=5V, GAIN=0dB
THD+N=10%, R
L
=16Ω
Po
Output Power, f
in
=1kHz
THD+N =10%, R
L
=32Ω
THD+N =1%, R
L
=16Ω
THD+N =1%, R
L
=32Ω
THD+N
Total Harmonic Distortion
Pulse Noise
P
O
=125mW, R
L
=16Ω, f
in
=1kHz
P
O
=65mW, R
L
=32Ω, f
in
=1kHz
V
DD
Ripple =0.1Vrms, R
L
=32Ω,
C
BYPASS
=2.2µF, f
in
=217Hz
C
BYPASS
=2.2µF, R
L
=32Ω, f
in
=1kHz
R
L
=32Ω
P
O
=75mW, R
L
=32Ω, A_weighting
-
-
-
-
-
-
-
-
-
-
220
120
160
95
0.12
0.11
60
60
5
100
-
-
-
-
-
-
-
-
-
-
%
mW
PSRR
Crosstalk
V
OS
S/N
Power Supply Rejection Ratio
Channel Separation
Output Offset Voltage
Signal to Noise Ratio
dB
dB
mV
dB
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Nov., 2008
4
www.anpec.com.tw
APA2071
Typical Operating Characteristics
THD+N vs. Output Power
10
V
DD
= 5V
A
V
=18dB
f
in
= 1kHz
BTL Mode
10
V
DD
= 5V
A
V
=12dB
f
in
= 1kHz
SE Mode
THD+N vs. Output Power
THD+N (%)
R
L
= 8Ω
THD+N (%)
1
R
L
= 4Ω
R
L
= 3Ω
1
R
L
= 32Ω
R
L
= 16Ω
0.1
0.1
0.01
0
0.5
1
1.5
2
2.5
Output Power (W)
3
3.5
0.01
0
40m
80m
120m
160m 200m 240m
Output Power (W)
THD+N vs. Output Power
10
THD+N vs. Output Power
10
V
DD
= 5V
A
V
=18dB
R
L
=3Ω
BTL Mode
f
in
= 20kHz
V
DD
= 5V
f
in
=1kHz
R
L
=3Ω
BTL Mode
THD+N (%)
1
THD+N (%)
1
A
V
= 18dB
0.1
A
V
= 6dB
0.01
0
0.5
1
1.5
2
2.5
Output Power (W)
3
3.5
f
in
= 20Hz
f
in
= 1kHz
0.1
0.05
10m
100m
1
Output Power (W)
5
THD+N vs. Frequency
10
V
DD
= 5V
R
L
=3Ω
P
O
= 1.8W
BTL Mode
THD+N vs. Frequency
10
V
DD
= 5V
A
V
= 6dB
R
L
=3Ω
BTL Mode
THD+N (%)
1
THD+N (%)
1
0.1
A
V
=18dB
A
V
=6dB
0.1
P
O
=1.8W
P
O
=0.9W
0.01
20
100
1k
Frequency (Hz)
10k 20k
0.01
20
100
1k
Frequency (Hz)
10k 20k
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Nov., 2008
5
www.anpec.com.tw
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