APA2070
Stereo 2.6W Audio Power Amplifier (with DC Volume Control)
Features
•
•
•
•
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, BTLMode, R
L
=3Ω
- 2W, at V
DD
=5V, BTLMode, R
L
=4Ω
at 10% THD+N
- 3.1W, at V
DD
=5V, BTLMode, R
L
=3Ω
- 2.6W, at V
DD
=5V, BTLMode, 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
The OUTP Signal and the INN Signal are
Outphase
Power Enhanced Package (DIP-16/DIP-16A)
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
The APA2070 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 APA2070 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 APA2070, 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 APA2070
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
Simplified Application Circuit
L-CH
Input
R-CH
Input
LINN
LOUTP
Stereo
Speaker
LOUTN
Stereo
Headphone
RINN
APA2070
ROUTP
DC Volume
Control
VOLUME
ROUTN
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.4 - Oct., 2010
1
www.anpec.com.tw
APA2070
Ordering and Marking Information
APA2070
Assembly Material
Handling Code
Temperature Range
Package Code
APA2070
XXXXX
Package Code
J : DIP-16 / DIP-16A
Operating Ambient Temperature Range
I : - 40 to 85
o
C
Handling Code
TU : Tube
Assembly Material
L : Lead Free Device
G : Halogen and Lead Free Device
XXXXX - Date Code
APA2070 J :
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-020D 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
APA2070
16
15
14
13
12
11
10
9
ROUTN
VDD
ROUTP
GND
GND
LOUTP
VDD
LOUTN
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
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
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.
Copyright
©
ANPEC Electronics Corp.
Rev. A.4 - Oct., 2010
2
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APA2070
Thermal Characteristics
Symbol
θ
JA
θ
JC
Parameter
Junction-to-Ambient Resistance in Free Air
Junction-to-Case Resistance in Free Air
(Note 2)
(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.
Recommended Operating Conditions
Symbol
V
DD
V
IH
Supply Voltage
High Level Threshold Voltage
Parameter
(Note 4)
Range
4.5 ~ 5.5
SHUTDOWN
SE/BTL
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
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
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
-
-
-
-
APA2070
Typ.
9
4
1
1.6
Max.
20
10
-
-
Unit
I
DD
Supply Current
V
SE/BTL
=5V
V
SE/BTL
=0V
V
SHUTDOWN
=0V
C
BYPASS
=2.2µF
mA
µA
s
I
SD
T
START-UP
Shutdown Current
Start-Up Time from Shutdown
BTL MODE. V
DD
=5V, GAIN=6dB (UNLESS OTHERWISE NOTED)
THD+N=10%, R
L
=3Ω, f
in
=1kHz
THD+N =10%, R
L
=4Ω,
f
in
=1kHz
THD+N =10%, R
L
=8Ω, f
in
=1kHz
P
O
Output Power
THD+N =1%, R
L
=3Ω, f
in
=1kHz
THD+N =1%, R
L
=4Ω, f
in
=1kHz
THD+N =0.5%, R
L
=8Ω,
f
in
=1kHz
THD+N
Total Harmonic Distortion Pulse
Noise
P
O
=1.2W, R
L
=4Ω, f
in
=1kHz
P
O
=0.9W, R
L
=8Ω, f
in
=1kHz
-
-
-
-
-
1
-
-
3.1
2.6
1.6
2.4
2
1.3
0.07
0.08
-
-
-
-
-
-
-
%
-
W
Copyright
©
ANPEC Electronics Corp.
Rev. A.4 - Oct., 2010
3
www.anpec.com.tw
APA2070
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.
BTL MODE. V
DD
=5V, GAIN=6dB (UNLESS OTHERWISE NOTED) (CONT.)
PSRR
Crosstalk
V
OS
S/N
Power Supply Rejection Ratio
Channel Separation
Output Offset Voltage
Signal to Noise Ratio
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
R
L
=4Ω
P
O
=1.1W, R
L
=8Ω, A_Weighting
-
-
-
-
60
90
5
95
-
-
-
-
dB
dB
mV
dB
APA2070
Typ.
Max.
Unit
SE MODE. V
DD
=5V, GAIN=0dB
THD+N=10%, R
L
=16Ω, f
in
=1kHz
Po
Output Power
THD+N =10%, R
L
=32Ω, f
in
=1kHz
THD+N =1%, R
L
=16Ω, f
in
=1kHz
THD+N =1%, R
L
=32Ω, f
in
=1kHz
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
0.09
0.09
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.4 - Oct., 2010
4
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APA2070
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
V
DD
= 5V
f
in
=1kHz
R
L
=3Ω
BTL Mode
THD+N vs. Output Power
10
V
DD
= 5V
A
V
=18dB
R
L
=3Ω
BTL Mode
f
in
= 20kHz
THD+N (%)
THD+N (%)
1
1
A
V
= 18dB
0.1
A
V
= 6dB
0.01
0
0.5
1
1.5
2
2.5
3
3.5
f
in
= 20Hz
f
in
= 1kHz
0.1
0.05
10m
100m
Output Power (W)
1
5
Output Power (W)
THD+N vs. Frequency
10
V
DD
= 5V
R
L
=3Ω
P
O
= 1.8W
BTL Mode
10
THD+N vs. Frequency
V
DD
= 5V
A
V
= 6dB
R
L
=3Ω
BTL Mode
THD+N (%)
THD+N (%)
1
1
0.1
A
V
= 18dB
0.1
P
O
= 0.9W
A
V
= 6dB
P
O
= 1.8W
0.01
20
100
1k
10k 20k
0.01
20
100
1k
10k 20k
Frequency (Hz)
Copyright
©
ANPEC Electronics Corp.
Rev. A.4 - Oct., 2010
5
Frequency (Hz)
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