ICs for Audio Common Use
1
Publication date: November 2001 SDC00033BEB
AN7512SH
Dual 1-W BTL audio power amplifier
■Overview
The AN7512SH is an audio power amplifier IC
with surface mount package for stereo system. The
BTL (Balanced Transformer-Less) method can pro-
vide fewer external parts and more easy design for
applications.
■Features
•1-W output (8 Ω) with supply voltage of 5 V
•On-chip standby function
•On-chip volume function
•Small and thin surface mount package
■Applications
•LCD televisions, monitor with speaker for per-
sonal computers
■Block Diagram
HSOP056-P-0300A (Lead-free package)
Unit: mm
14.00
±0.10
0.20
±0.05
(0.25)
(1.00)
0° to 8°
0.50
±0.10
0.15
±0.05
Seating plane Seating plane
(6.90)
(5.45)
56 29
281
(2.25)
(3.70)
6.10
±0.10
0.10
±0.10
8.10
±0.20
1.20 max.
(1.00)
0.50
M
0.10
0.10
Area of no resin flash
Standby
Standby
5 V
On
Off
0 V
Volume
TAB
VIN
VCC
56
1
55
2
54
3
53
4
52
5
51
6
50
7
49
8
48
9
47
10
46
11
45
12
44
13
43
14
42
15
41
16
40
17
39
18
38
19
37
20
36
21
35
22
34
23
33
24
32
25
31
26
30
27
29
28
68 kΩ
270 kΩ
10 kΩ
10 kΩ
10 µF
RL = 8 Ω
1 µF
1.25 V
0 V
VIN
1 µF
470 µF
Volume
RL = 8 Ω
AN7512SH
2SDC00033BEB
Parameter Symbol Range Unit
Supply voltage VCC 3 to 8 V
■Pin Descriptions
Parameter Symbol Rating Unit
Supply voltage *2VCC 14 V
Supply current ICC 2.0 A
Power dissipation *3PD690 mW
Operating ambient temperature *1Topr −25 to +75 °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 the independent IC without a heat sink at Ta = 25°C.
Refer to PD Ta curves at mounted on standard board.
Pin No. Description
33 Ground (output ch.2)
37 Ch.2 + output
42 TAB (tablet)
45 Supply voltage
48 Ch.1 + output
52 Ground (output ch.1)
56 Ch.1 − output
Pin No. Description
1 Standby (standby state if this pin is open.)
9 Ch.1 input
12 Ground (input)
15 TAB (tablet)
20 Ch.2 input
28 Volume (muting off if this pin is open.)
29 Ch.2 − output
Note) Please do not apply voltage or current to the N.C. pin from outside.
N.C. Pin No. 2, 3, 4, 5, 6, 7, 8, 10, 11, 13, 14, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 30, 31, 32, 34, 35, 36, 38,
39, 40, 41, 43, 44, 46, 47, 49, 50, 51, 53, 54, 55
AN7512SH
3
SDC00033BEB
■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 Standby pin Standby off at
5 V application.
2N.C. 
3N.C. 
4N.C. 
5N.C. 
6N.C. 
7N.C. 
8N.C. 
■Terminal Equivalent Circuits
200 Ω
30 kΩ
2 kΩ50 kΩ
5 kΩ
33 kΩ10 kΩ
1/2 V
CC
V
RF
(≈ V
CC
)
12 kΩ
10 kΩ
1
V
CC
To the constant
current circuit
To the shock
sound
prevention
circuit
AN7512SH
4SDC00033BEB
Pin No. Pin name Equivalent circuit Voltage
9 Ch.1 input pin 1.4 V
(Input circuit
bias voltage is
output.)
10 N.C. 
11 N.C. 
12 GND 0 V
13 N.C. 
14 N.C. 
15 GND Connected to TAB
16 N.C. 
17 N.C. 
18 N.C. 
19 N.C. 
20 Ch.2 input pin 1.4 V
(Input circuit
bias voltage is
output.)
■Terminal Equivalent Circuits (continued)
100 µA
50 µA
50 µA
30 kΩ
1 kΩ1 kΩ500 Ω
1 kΩ
9
V
CC
V
REF1
(1.4 V)
12
100 µA
50 µA
50 µA
30 kΩ
1 kΩ1 kΩ500 Ω
1 kΩ
20
V
CC
V
REF1
(1.4 V)
AN7512SH
5
SDC00033BEB
Pin No. Pin name Equivalent circuit Voltage
21 N.C. 
22 N.C. 
23 N.C. 
24 N.C. 
25 N.C. 
26 N.C. 
27 N.C. 
28 Volume pin Supplied with
0 V to 1.25 V
29 Ch.2 − output pin 2.15 V
(at no signal)
30 N.C. 
31 N.C. 
32 N.C. 
33 GND 0 V
34 N.C. 
35 N.C. 
36 N.C. 
■Terminal Equivalent Circuits (continued)
28
50 µA
1 kΩ
12 kΩ
VCC
20 kΩ800 Ω
50 Ω
200 Ω29
1/2 VCC
VCC
33
AN7512SH
6SDC00033BEB
Pin No. Pin name Equivalent circuit Voltage
37 Ch.2 + output pin 2.15 V
(at no signal)
38 N.C. 
39 N.C. 
40 N.C. 
41 N.C. 
42 GND Connected to TAB 0 V
43 N.C. 
44 N.C. 
45 VCC 5.0 V
46 N.C. 
47 N.C. 
48 Ch.1 + output pin 2.15 V
(at no signal)
49 N.C. 
50 N.C. 
51 N.C. 
■Terminal Equivalent Circuits (continued)
20 kΩ800 Ω
50 Ω
200 Ω37
1/2 V
CC
V
CC
20 kΩ800 Ω
50 Ω
200 Ω48
1/2 V
CC
V
CC
AN7512SH
7
SDC00033BEB
Pin No. Pin name Equivalent circuit Voltage
52 GND 0 V
53 N.C. 
54 N.C. 
55 N.C. 
56 Ch.1 − output pin 2.15 V
(at no signal)
■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 for the signal input with the signal GND of the amplifier in the previous stage.
•Take notice that the ripple rejection ratio is poor in case of headphone use.
•Take notice that as to following pins, electric surge voltage is low.
At 200 pF, Pin1 = +140 V, Pin9 = +140 V, Pin20 = +130 V, Pin28 = +150 V.
•Use a speaker with 8 Ω or more impedance.
52
20 kΩ800 Ω
50 Ω
200 Ω56
1/2 V
CC
V
CC
AN7512SH
8SDC00033BEB
■Technical Data
•PD Ta curve of HSOP056-P-0300A •Main characteristics
CT f
PO VCC ICQ , ISTB VCC
0
1
2
3
4
5
6
7
8
02468101214
Supply voltage V
CC
(V)
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
Output power P
O
(W)
Ch.1, Ch.2
0
1
2
3
4
5
6
7
8
9
10
0
10
20
30
40
50
60
70
80
90
100
02468101214
ICQ
ISTB
RL = 8 Ω
Both ch. inputs
Rg = 10 kΩ
V
STB
= 0 V/5 V
VMUTE
= 0 V
Supply voltage VCC (V)
Standby current ISTB (µA)
Quiescent circuit current ICQ (mA)
PO , THD VIN PC , ICC PO
0.001
0.01
0.1
1
10
1 10 100
100
1
000
Input voltage V
IN
(mV[rms])
Output power P
O
(W)
0.01
0.1
1
10
Total harmonic distortion THD (%)
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)
V
CC
= 5V
f = 1 kHz
R
L
= 8 Ω
400 Hz HPF
30 kHz LPF
Power consumption P
C
(W)
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
Supply current I
CC
(A)
0.0
0.5
Output power (1-ch) P
O
(W)
Both ch. inputs
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 1.25 V
P
C
(8 Ω)
I
CC
(8 Ω)
Power dissipation P
D
(W)
0.000
Independent IC
without a heat sink
R
th( j-a)
= 144.9°C/W
025
Ambient temperature T
a
(°C)
50 75 100 125
1.400
1.300
1.257
1.200
1.100
1.000
0.900
0.800
0.700
0.690
0.600
0.500
0.400
0.300
0.200
0.100
Mounted on standard board
(glass epoxy: 50 × 50 × t0.8 mm
3
)
R
th(j-a)
= 79.5°C/W
0
10
20
30
40
50
60
70
80
90
10 100 1
000 10
000 100
000
Frequency f (Hz)
Cross talk CT (dB)
VCC = 5 V
PO = 0.25 W
RL = 8 Ω
Rg = 10 kΩ
VSTB = 5 V
Vol. = 1.25 V
Ch.1
Ch.2
AN7512SH
9
SDC00033BEB
■Technical Data (continued)
•Main characteristics (continued)
GV , PO f THD f
GV , THD VCC Att Vol.
RR VRIPPLE RR fRIPPLE
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
GV (ch.1)
Frequency f (Hz)
Voltage gain GV (dB)
Output power PO (W)
VCC = 5 V
RL = 8 Ω
400 Hz HPF
30 kHz LPF
Both ch. inputs
Rg = 10 kΩ
VSTB = 5 V
Vol. = 1.25 V
GV (ch.2)
PO (ch.2)
PO (ch.1)
Ch.1
0.01
0.1
1
10
10 100 1
000 10
000 100
000
Frequency f (Hz)
Total harmonic distortion THD (%)
VCC = 5V
PO = 0.25 W
RL = 8 Ω
400 Hz HPF
30 kHz LPF
Both ch. inputs
Rg = 10 kΩ
VSTB = 5 V
Vol. = 1.25 V
Ch.2
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)
Supply voltage V
CC
(V)
Voltage gain G
V
(dB)
Total harmonic distortion THD (%)
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
90
80
70
60
50
40
30
20
10
0
Volume voltage Vol. (V)
Volume attenuation Att (dB)
0.0 0.2 0.4 0.6 0.8 1.0 1.4
VCC = 5 V
PO = 0.25 W
f = 1 kHz
RL = 8 Ω
400 Hz HPF
30 kHz LPF
Rg = 10 kΩ
VSTB = 5 V
Vol. = 0 V
1.2
Ch.1, Ch.2
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. = 0/1.25 V
VRIPPLE = 0.5 V[rms]
fRIPPLE = 120 Hz
0
10
20
30
40
50
60
70
80
Power supply ripple frequency f
RIPPLE
(Hz)
Ripple rejection ratio RR (dB)
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.)
AN7512SH
10 SDC00033BEB
■Technical Data (continued)
•Main characteristics (continued)
RR VCC RR Vol.
VNO VCC VNO Rg
VNO Vol. ICQ VSTB
0
10
20
30
40
50
60
70
80
02468101214
Supply voltage VCC (V)
Ripple rejection ratio RR (dB)
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
Ch.1 (vol.-max.)
Ch.2 (vol.-max.)
Ch.2
Ch.1
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
0
100
200
300
400
500
600
700
800
02468101214
Supply voltage VCC (V)
Output noise voltage VNO (µV[rms])
RL = 8 Ω
Rg = 10 kΩ
DIN audio filter
VSTB = 5 V
Vol. = 0 V/1.25 V
Ch.1, Ch.2
Ch.1, Ch.2 (vol.-max.)
Ch.1, Ch.2 (FLAT)
10 100 1
000 10
000 100
000
0
100
200
300
400
500
600
700
800
Input impedance R
g
(Ω)
Output noise voltage V
NO
(µV[rms])
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.)
0
200
300
500
600
800
1
000
100
400
700
900
0.0
Volume voltage Vol. (V)
VCC = 5 V
RL = 8 Ω
Rg = 10 kΩ
DIN audio filter
VSTB = 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
Output noise voltage VNO (µV[rms])
0
10
20
30
40
50
60
70
80
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Stanby voltage V
STB
(V)
Quiscent circuit current I
CQ
(A)
V
CC
= 5 V
R
L
= 8 Ω
R
g
= 10 kΩ
Vol. = 1.25 V
I
CQ
AN7512SH
11
SDC00033BEB
■Technical Data (continued)
•Main characteristics (continued)
Att VCC Att VIN
Att f THD Vol.
CT VCC CT VIN
PO = 0.25 W
f = 1 kHz
RL = 8 Ω
400 Hz HPF
30 kHz LPF
Rg = 10 kΩ
VSTB = 5 V
Vol. = 0 V
20 4 6 8 10 12 14
Supply voltage VCC (V)
40
50
60
70
80
90
100
Volume attenuation Att (dB)
Ch.1, Ch.2
40
50
60
70
80
90
100
1 10 100 1
000
Input voltage VIN (mV[rms])
Volume attenuation Att (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. = 0 V
Ch.1
Ch.2
Ch.1, Ch.2
50
55
60
65
70
75
80
85
90
95
100
10 100 1
000 10
000 100
000
Frequency f (Hz)
Volume attenuation Att (dB)
V
CC
= 5 V
P
O
= 0.25 W
R
L
= 8 Ω
R
g
= 10 kΩ
V
STB
= 5 V
Vol. = 0 V
Ch.1
0.01
0.1
1
10
Total harmonic 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)
Cross talk CT (dB)
PO = 0.25 W
f = 1 kHz
RL = 8 Ω
400 Hz HPF
30 kHz LPF
Rg = 10 kΩ
VSTB = 5 V
Vol. = 1.25 V
Ch.2
Ch.1
10 100 1
000
0
10
20
30
40
50
60
70
80
90
Input voltage VIN (mV[rms])
Cross talk CT (dB)
VCC = 5 V
f = 1 kHz
RL = 8 Ω
400 Hz HPF
30 kHz LPF
Rg = 10 kΩ
VSTB = 5 V
Vol. = 1.25 V
Ch.2
Ch.1
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2001 MAR