ICs for Audio Common Use
1
AN7512
Dual 1-W BTL audio power amplifier
■Overview
The AN7512 is an audio power amplifier IC for stereo
system. The BTL (Balanced Transformer-Less) method can
provide fewer external parts and more easy design for ap-
plications.
■Features
•1-W output (8 Ω) with supply voltage of 5 V
•On-chip standby function
•On-chip volume function
■Applications
•Televisions, audio equipment, personal computers, and
active speakers
■Block Diagram
HDIP016-P-0300
Unit: mm
1
2
3
4
5
6
7
8
10
9
11
12
13
14
15
16
27.4±0.3
6.35±0.3 4.7±0.25
1.06±0.25
3.05
±0.25
0.5±0.1
1.2±0.25
2.54±2.54
1.7
1.5±0.1
3.80±0.3
17
7.62±0.25
0° to 6°0.45
+0.1
–0.05
0.5±0.1
φ 2.1
5.08±0.1
21.6±0.3
28 dB
28 dB
AttenuatorAttenuator
Ripple
rejection
circuit
Thermal
shutdown
Attenuator
control
2
11
8
10
4
5
6
3
12
13
15
14
VCC
GND
(ch.1 output)
GND
(ch.2 output)
Ch.2 output
Ch.2 output
Standby
N.C.
N.C.
N.C.
N.C.
GND
Volume
Ch.1 output
Ch.1 output
Ch.1 input
Ch.2 input
28 dB
28 dB
1
7
9
16
AN7512 ICs for Audio Common Use
2
Parameter Symbol Range Unit
Supply voltage VCC 3.5 to 13.5 V
■Pin Descriptions
Parameter Symbol Rating Unit
Supply voltage *2VCC 14 V
Supply current ICC 2.0 A
Power dissipation *3PD1
127 mW
Operating ambient temperature *1Topr −25 to +70 °C
Storage temperature *1Tstg −55 to +150 °C
■Absolute Maximum Ratings
■Recommended Operating Range
Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.
*2: At no signal.
*3: The power dissipation shown is the value for Ta = 70°C.
Pin No. Description
9N.C.
10 Ground (output ch.2)
11 Ch.2 + output
12 Supply voltage
13 Ch.1 + output
14 Ground (output ch.1)
15 Ch.1 − output
16 N.C.
Pin No. Description
1N.C.
2 Standby (standby state if this pin is open.)
3 Ch.1 input
4 Ground (input)
5 Volume (muting off if this pin is open.)
6 Ch.2 input
7N.C.
8 Ch.2 − output
Note) Please do not apply voltage or current to the N.C. pin from outside.
ICs for Audio Common Use AN7512
3
■Electrical Characteristics at VCC = 5.0 V, RL = 8 Ω, f = 1 kHz, Ta = 25°C ± 2°C
Note) *: In measuring, the filter for the range of 15 Hz to 30 kHz (12 dB/OCT) is used.
Parameter Symbol Conditions Min Typ Max Unit
Quiescent circuit current ICQ VIN = 0 mV, Vol. = 0 V 35 100 mA
Standby current ISTB VIN = 0 mV, Vol. = 0 V 110µA
Output noise voltage *VNO Rg = 10 kΩ, Vol. = 0 V 0.10 0.4
mV[rms]
Voltage gain GVPO = 0.25 W, Vol. = 1.25 V 31 33 35 dB
Total harmonics distortion THD PO = 0.25 W, Vol. = 1.25 V 0.10 0.5 %
Maximum output power PO1 THD = 10 %, Vol. = 1.25 V 0.7 1.0 W
Ripple rejection ratio *RR Rg = 10 kΩ, Vol. = 0 V, 30 50 dB
VR = 0.5 V[rms], fR = 120 Hz
Output offset voltage VOFF Rg = 10 kΩ, Vol. = 0 V −250 0 250 mV
Volume attenuation rate *Att PO = 0.25 W, Vol. = 0 V 70 85 dB
Channel balance 1 CB1 PO = 0.25 W, Vol. = 1.25 V −10 1dB
Channel balance 2 CB2 PO = 0.25 W, Vol. = 0.6 V −30 3dB
Intermediate voltage gain GVM PO = 0.25 W, Vol. = 0.6 V 20.5 23.5 26.5 dB
Channel crosstalk CT PO = 0.25 W, Vol. = 1.25 V 40 55 dB
Pin No. Pin name Equivalent circuit Voltage
1 N.C. Open
2 Standby pin 5 V
■Terminal Equivalent Circuits
To the constant
current circuit
To the shock
sound
prevention
circuit
200 Ω
30 kΩ
2 kΩ50 kΩ
33 kΩ10 kΩ
1/2 VCC
VRF
(≈ VCC)
12 kΩ
10 kΩ
5 kΩ
2
VCC
AN7512 ICs for Audio Common Use
4
Pin No. Pin name Equivalent circuit Voltage
3 Ch.1 input pin 1.4 V
4 GND 0 V
5 Volume pin
6 Ch.2 input pin 1.4 V
7 N.C. Open
■Terminal Equivalent Circuits (continued)
5
50 µA
1 kΩ
12 kΩ
VCC
4
100 µA
50 µA50 µA
30 kΩ
1 kΩ1 kΩ500 Ω
1 kΩ
6
VCC
VREF1 (1.4 V)
100 µA
50 µA50 µA
30 kΩ
1 kΩ1 kΩ500 Ω
1 kΩ
3
VCC
VREF1 (1.4 V)
ICs for Audio Common Use AN7512
5
Pin No. Pin name Equivalent circuit Voltage
8 Ch.2 − output pin 2.15 V
9 N.C. Open
10 GND 0 V
11 Ch.2 + output pin 2.15 V
12 VCC 5.0 V
13 Ch.1 + output pin 2.15 V
■Terminal Equivalent Circuits (continued)
10
20 kΩ800 Ω
50 Ω
200 Ω11
1/2 VCC
VCC
20 kΩ800 Ω
50 Ω
200 Ω8
1/2 VCC
VCC
20 kΩ800 Ω
50 Ω
200 Ω13
1/2 V
CC
V
CC
AN7512 ICs for Audio Common Use
6
Pin No. Pin name Equivalent circuit Voltage
14 GND 0 V
15 Ch.1 − output pin 2.15 V
16 N.C. Open
■Terminal Equivalent Circuits (continued)
■Usage Notes
•Please avoid the short circuit to VCC , ground, or load short circuit.
•Please connect the cooling fin with the GND potential.
•The thermal shutdown circuit operates at about Tj = 150°C. However, the thermal shutdown circuit is reset automati-
cally if the temperature drops.
•Please carefully design the heat radiation especially when you take out high power at high VCC .
•Please connect only the ground of signal with the signal GND of the amplifier in the previous stage.
20 kΩ800 Ω
50 Ω
200 Ω15
1/2 VCC
VCC
■Technical Data
•PD Ta curve of HDIP016-P-0300
PD Ta
2
000
1
800
1
600
1
400
1
200
1
000
800
600
400
200
0
0 25 150
Ambient temperature T
a
(°C)
Power dissipation P
D
(mW)
50 75 100 125
Independent IC
without a heat sink
R
thj-a
= 71°C/W
P
D
= 1
761 mW (25°C)
14
ICs for Audio Common Use AN7512
7
■Technical Data (continued)
•Main characteristics
PO VCC ICQ , ISTB VCC
PO , THD VIN PC , ICC PO
GV , PO f THD f
0
1
2
3
4
5
6
7
8
02468101214
f = 1 kHz
THD = 10%
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
Both ch. inputs
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
Ch.2 (8 Ω)
Ch.1 (8 Ω)
Output power P
O
(W)
Supply voltage V
CC
(V)
0
1
2
3
4
5
6
7
8
9
10
0
10
20
30
40
50
60
70
80
90
100
02468101214
I
CQ
I
STB
Spply voltage V
CC
(V)
R
L
= 8 Ω
Both ch. inputs
R
g
= 10 kΩ
V
STB
= 0 V/5 V
V
MUTE
= 0 V
Standby current I
STB
(µA)
Quiescent circuit current I
CQ
(mA)
0.001
0.01
0.1
1
10
1 10 100
100
1
000
0.01
0.1
1
10
V
CC
= 5 V
f = 1 kHz
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
Both ch. inputs
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
P
O
(ch.1, ch.2)
THD (ch.2, 100 kHz)
THD (ch.1, 10 kHz)
THD
(ch.1, 1 kHz)
THD (ch.1, 100 kHz)
THD (ch.2,1 kHz)
THD (ch.2, 10 kHz)
Input voltage V
IN
(mV[rms])
Output power P
O
(W)
Total harmonic distortion THD (%)
V
CC
= 5V
f = 1 kHz
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
1.0
1.5
2.0
2.5
3.0
3.5
0.0 0.5 1.0 1.5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0.0
0.5
Both ch. inputs
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
P
C
(8 Ω)
I
CC
(8 Ω)
Power consumption P
C
(W)
Supply current I
CC
(A)
Output power P
O
(W)
25
26
27
28
29
30
31
32
33
34
35
10 100 1
000 10
000 100
000
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
G
V
(ch.1)
V
CC
= 5 V
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
Both ch. inputs
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
G
V
(ch.2)
P
O
(ch.2)
P
O
(ch.1)
Frequency f (Hz)
Voltage gain G
V
(dB)
Output power P
O
(W)
Ch.1
0.01
0.1
1
10
10 100 1
000 10
000 100
000
Ch.2
Frequency f (Hz)
Total harmonic distortion THD (%)
V
CC
= 5 V
P
O
= 0.25 W
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
Both ch. inputs
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
AN7512 ICs for Audio Common Use
8
■Technical Data (continued)
•Main characteristics (continued)
GV , THD VCC Att Vol.
RR VRIPPLE RR fRIPPLE
RR VCC RR Vol.
30
31
32
33
34
35
36
37
38
39
40
02468101214
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
G
V
(ch.2)
G
V
(ch.1)
THD (ch.2)
THD (ch.1)
P
O
= 0.25 W
f = 1 kHz
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
Both ch. inputs
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
Supply voltage V
CC
(V)
Voltage gain G
V
(dB)
Total harmonic distortion THD (%)
90
80
70
60
50
40
30
20
10
0
Volume voltage Vol. (V)
0.0 0.2 0.4 0.6 0.8 1.0 1.4
V
CC
= 5 V
P
O
= 0.25 W
f = 1 kHz
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 0 V
1.2
Ch.1, Ch.2
Volume attenuation Att (dB)
10 100 1
000 10
000
0
10
20
30
40
50
60
70
80
Power supply ripple voltage VRIPPLE (mV[rms])
Ripple rejection ratio RR (dB)
Ch.2
Ch.2 (vol.-max.)
Ch.1 (vol.-max.)
Ch.1
VCC = 5 V
RL = 8 Ω
30 kHz LPF
Rg = 10 kΩ
VSTB = 5 V
Vol. = 0 V/1.25 V
VRIPPLE = 0.5 V[rms]
fRIPPLE = 120 Hz
0
10
20
30
40
50
60
70
80
Vol. = 1.25 V
V
RIPPLE
= 0.5 V[rms]
f
RIPPLE
= 120 Hz
10 100 1
000 10
000 100
000
V
CC
= 5 V
R
L
= 8 Ω
R
g
= 10 kΩ
V
STB
= 5V
Ch.1
Ch.2
Ch.2 (vol.-max.)
Ch.1 (vol.-max.)
Power supply ripple frequency fRIPPLE (Hz)
Ripple rejection ratio RR (dB)
0
10
20
30
40
50
60
70
80
02468101214
R
L
= 8 Ω
30 kHz LPF
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 0 V/1.25 V
V
RIPPLE
= 0.5 V[rms]
f
RIPPLE
= 120 Hz
Ch.1 (vol.-max.)
Ch.2 (vol.-max.)
Ch.2
Ch.1
Supply voltage V
CC
(V)
Ripple rejection ratio RR (dB)
Volume voltage Vol. (V)
Ripple rejection ratio RR (dB)
VCC = 5 V
RL = 8 Ω
30 kHz LPF
Rg = 10 kΩ
VSTB = 5 V
VRIPPLE = 0.5 V[rms]
fRIPPLE = 120 Hz
0
10
20
30
40
50
60
70
80
0.0 0.2 0.4 0.8 1.00.6 1.2
Ch.1
Ch.2
ICs for Audio Common Use AN7512
9
■Technical Data (continued)
•Main characteristics (continued)
VNO VCC VNO Rg
VNO Vol. ICQ VSTB
Att VCC Att VIN
0
100
200
300
400
500
600
700
800
02468101214
Supply voltage VCC (V)
Output noise voltage V
NO
(µV[rms])
R
L
= 8 Ω
R
g
= 10 kΩ
DIN audio filter
V
STB
= 5 V
Vol. = 0 V/1.25 V
Ch.1, Ch.2
Ch.1 (vol.-max.)
Ch.1 (FLAT)
Ch.2 (FLAT)
Ch.2 (vol.-max.)
10 100 1
000 10
000 100
000
0
100
200
300
400
500
600
700
800 V
CC
= 5 V
R
L
= 8 Ω
DIN audio filter
V
STB
= 5 V
Vol. = 0 V/1.25 V
Ch.1 (FLAT), Ch.2 (FLAT)
Ch.1, Ch.2
Ch.1 (vol.-max.)
Ch.2 (vol.-max.)
Input impedance R
g
(Ω)
Output noise voltage V
NO
(µV[rms])
0
200
300
500
600
800
1
000
100
400
700
900
0.0
Volume voltage Vol. (V)
Output noise voltage VNO (µV[rms])
V
CC
= 5 V
R
L
= 8 Ω
R
g
= 10 kΩ
DIN audio filter
V
STB
= 5 V
0.2 0.4 0.6 0.8 1.21.0 1.4
Ch.1 (FLAT)
Ch.2 (FLAT)
Ch.1, Ch.2
0
10
20
30
40
50
60
70
80
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Standby voltage VSTB (V)
Static circuit current ICQ (A)
VCC = 5 V
RL = 8 Ω
Rg = 10 kΩ
Vol. = 1.25 V
ICQ
P
O
= 0.25 W
f = 1 kHz
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 0 V
20 4 6 8 10 12 14
40
50
60
70
80
90
100
Ch.1, Ch.2
Supply voltage VCC (V)
Volume attenuation Att (dB)
40
50
60
70
80
90
100
1 10 100 1
000
VCC = 5 V
f = 1 kHz
RL = 8 Ω
400 Hz HPF
30 kHz LPF
Rg = 10 kΩ
V
STB
= 5 V
Vol. = 0 V
Ch.1
Ch.2
Input voltage V
IN
(mV[rms])
Volume attenuation Att (dB)
AN7512 ICs for Audio Common Use
10
■Technical Data (continued)
•Main characteristics (continued)
Att f THD Vol.
CT VCC CT VIN
CT f
Ch.1, Ch.2
50
55
60
65
70
75
80
85
90
95
100
10 100 1
000 10
000 100
000
VCC = 5 V
PO = 0.25 W
RL = 8 Ω
Rg = 10 kΩ
VSTB = 5 V
Vol. = 0 V
Frequency f (Hz)
Volume attenuation Att (dB)
Ch.1
0.01
0.1
1
10
Total hrmonic distortion THD (%)
V
CC
= 5 V
P
O
= 0.25 W
f = 1 kHz
R
L
= 8 Ω
Ch.2
Volume voltage Vol. (V)
0.0 0.2 0.4 0.6 1.00.8 1.2 1.4
400 Hz HPF
30 kHz LPF
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
0
10
20
30
40
50
60
70
80
90
0246 8 10 12 14
Supply voltage VCC (V)
Closs talk CT (dB)
P
O
= 0.25 W
f = 1 kHz
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
Ch.1
Ch.2
10 100 1
000
0
10
20
30
40
50
60
70
80
90
Input voltage VIN (mV[rms])
Closs talk CT (dB)
V
CC
= 5 V
f = 1 kHz
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
Ch.2
Ch.1
0
10
20
30
40
50
60
70
80
90
10 100 1
000 10
000 100
000
Frequency f (Hz)
Closs talk CT (dB)
V
CC
= 5 V
P
O
= 0.25 W
R
L
= 8 Ω
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
Ch.1
Ch.2
ICs for Audio Common Use AN7512
11
4
5
10 µF
68 kΩ
10 kΩ
270 kΩ3
2
1
7
8
6
13
12
14
15
16
10
9
11
Standby VIN1
1.0 µF
1.0 µF
10 kΩ
VIN2
Volume
8 Ω
Out2
8 Ω
Out1
VCC
1.0 µF
TAB
TAB
GND (input)
VIN (ch.2)
Volume
VIN (ch.1)
Standby
Ch.2 out−
Ch.2 out+
Ch.1 out+
Ch.1 out−
VCC
GND
16 15 14 13 12 11 10 9
12345678
■Application Circuit Example
■Technical Data (continued)
•Example of PCB pattern
Please read the following notes before using the datasheets
A. These materials are intended as a reference to assist customers with the selection of Panasonic
semiconductor products best suited to their applications.
Due to modification or other reasons, any information contained in this material, such as available
product types, technical data, and so on, is subject to change without notice.
Customers are advised to contact our semiconductor sales office and obtain the latest information
before starting precise technical research and/or purchasing activities.
B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but
there is always the possibility that further rectifications will be required in the future. Therefore,
Panasonic will not assume any liability for any damages arising from any errors etc. that may ap-
pear in this material.
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Therefore, without the prior written approval of Panasonic, any other use such as reproducing,
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Request for your special attention and precautions in using the technical information
and semiconductors described in this material
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(2) The technical information described in this material is limited to showing representative character-
istics and applied circuit examples of the products. It does not constitute the warranting of industrial
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eral electronic equipment (such as office equipment, communications equipment, measuring in-
struments and household appliances).
Consult our sales staff in advance for information on the following applications:
•Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment,
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harm the human body.
•Any applications other than the standard applications intended.
(4) The products and product specifications described in this material are subject to change without
notice for reasons of modification and/or improvement. At the final stage of your design, purchas-
ing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to
make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the guaranteed values, in particular those of maxi-
mum rating, the range of operating power supply voltage and heat radiation characteristics. Other-
wise, we will not be liable for any defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, redundant design is recommended,
so that such equipment may not violate relevant laws or regulations because of the function of our
products.
(6) When using products for which dry packing is required, observe the conditions (including shelf life
and after-unpacking standby time) agreed upon when specification sheets are individually exchanged.
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from our company.
2001 MAR
