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ICs for Audio Common Use
AN7135
Dual 7.5W Low Frequency Power Amplifier Circuit
n
Overview
The AN7135 is a power amplifier circuit of 7.5W (15.0V,
Unit : mm
5.9±0.25 7.7±0.3 7.8±0.25
) output. It can provide stereo operation since two
amplifiers are incorporated in a chip. Static circuit current
is very smaller than conventional IC for power amplifier,
and various protective circuits are incorporated, thus pro-
viding high reliability. For its feature of very small static
circuit current, it is best suitable for dry cell operating sets
(e.g. radio cassette recorder). It requires smaller number
of external components because it has little distortion and
low noise and can support the stand-by condition.
½
ø 3.6
12
R1.8
n
Features
•
Small static circuit current
•
Stand-by condition supported
•
Good oscillation stability
•
Little unwanted radiation to RF portion of AM/FM
•
Little distortion
•
Low noise
•
Small shock noise at power ON/OFF, stand-by ON/OFF
•
Fewer external components
1
0.35
+ 0.1
– 0.05
Fin-attached 12-lead SIP package (HSIP012-P-0000A)
n
Block Diagram
V
CC
3
10
2
Input Circuit
Drive Circuit
SEPP
Output Circuit
12
1
11
Bias Circuit
Over Temperature
Protection
Crossover
Distortion
6
8
5
Input Circuit
Drive Circuit
SEPP
Output Circuit
7
4
9
GND
(Input)
GND
(Output)
3
AN7135
ICs for Audio Common Use
n
Pin Name
Pin No.
Pin Name
Pin No.
Pin Name
1
2
3
4
5
6
Negative Feedback Ch.1
Input Ch.1
Ripple filter/Stand-by Controller
GND (Input)
Input Ch.2
Negative Feedback Ch.2
7
8
9
10
11
12
Output Ch.2
Boot-strap Ch.2
GND (Output)
V
CC
Boot-strap Ch.1
Output Ch.1
n
Absolute Maximum Ratings
(Ta= 25˚C)
Parameter
Symbol
Rating
Unit
Supply Voltage
Supply Current
Power Dissipation
Note 1)
Operating Ambient Temperature
Storage Temperature
V
CC
I
CC
P
D
T
opr
T
stg
24
4
62.5
– 30 ~ + 75
– 55 ~ + 150
V
A
W
˚C
˚C
Note) q
j–c
= 2˚C/W
n
Recommended Operating Range
(Ta= 25˚C)
Parameter
Symbol
Range
Operating Supply Voltage Range
V
CC
5.5V ~ 18.0V
Note) 24V at no signals
n
Electrical Characteristics
(V
CC
= 15V, f
IN
= 1kHz, R
L
= 3
½
, Both channel drive, Ta= 25˚C
±
2˚C)
Parameter
Symbol
Condition
min.
typ.
max.
Unit
Quiescent Current
Output End Noise Voltage
Note 1)
Voltage Gain
Total Harmonics Distortion
Max. Output Power
Channel Balance
I
CQ
V
NO
G
V
THD
P
O
CB
V
IN
= 0mV
V
IN
= 0mV, R
g
= 10k½
V
IN
= 3mV
V
IN
= 3mV
THD= 10%
V
IN
= 3mV
42.5
14
0.25
44.5
0.40
7.5
0
20
0.50
46.5
0.75
mA
mV
dB
%
W
dB
7.0
–1
+ 1
Ripple Rejection Ratio
Note 1)
RR
V
CC (ripple)
= 280mV, f
(ripple)
= 120Hz
R
g
= 0½ Sine wave
45
50
dB
Input Offset Voltage
Stand-by Current
V
IN (O.S)
I
STB
Input pin open
Pin3 open
10
30
30
mV
µ
A
Note 1) Measured through 15Hz to 30kHz (12dB/OCT) filter
ICs for Audio Common Use
AN7135
Application Circuit
V
CC
(15V)
R.F
&
STB
+
V
CC
1000µF
3
10
390
½
V
STB
BS1
11
IN1
+
2
+
47
µ
F
1000
µ
F
100µ
F
30k
+
10k½
12
+
V
O
1
½
OUT1
1
–
NF1
0.1µF
150½
+
30k
½
3½
(20W)
100
µ
F
2.2½
BS2
8
+
5
+
47µF
1000µF
IN2
+
7
V
O
2
OUT2
6
–
0.1
µ
F
NF2
150½
30k
½
2.2½
½
(20W)
100
µ
F
4
9
P
D
– Ta
(Standard Conditions)
V
CC
= 15V
R
L
= 3½
f
IN
= 1kHz
V
IN
= 10mV or 3mV
R
g
= 600½
V
STB
= 5.0V
Both Ch. Drive
With heat sink
Tr for stand-by SW
NPN··· 2SC828A
PNP··· 2SA564A
80
P
D
at Ta = 25˚C
(a) 62.50W (q
j–c
= 2.0˚C/W)
Infinity heat sink
(b) 20.83W (q
f
= 4.0˚C/W)
Heat sink area : 100cm
2
70
´ 3mmAl
(Black lacquer coated)
200cm
2
(62.50)
(a)
´ 2mmAl
(Lacquered)
(c) 15.63W (q
f
= 6.0˚C/W)
Heat sink area : 100cm
2
60
´ 2mmAl
(Not lacquered)
(d) 3.0W at Ta = 30˚C
(q
j–a
= 40˚C/W)
Without heat sink
50
40
30
(20.83)
(b)
(c)
(15.63)
10
(3.0)
(d)
0
0
20
40
60
80
100
120
140
160
(30)
Ambient Temperature Ta (˚C)
n
3
20
AN7135
ICs for Audio Common Use
I
CQ
– V
CC
P
O
– V
CC
G
V
, THD
– f
IN
20
20
f
req.
= 1kHz
THD
= 10%
52
V
CC
= 15V
R
L
= 3½
V
IN
= 10mVrms
Both ch. drive
50
48
16
16
46
G
ain
1.0
No R
RF
12
12
44
0.8
R
L
= 3½
42
0.6
V
STB
= 6V
T
HD
8
8
R
L
=
4
½
40
38
0.4
V
STB
= 5V
Ch. 1
0.2
0
4
4
36
Ch. 2
V
STB
= 4V
V
STB
= 3V
R
L
= 8½
34
0
0
12
32
0
4
8
12
16
20
0
4
8
16
20
10
100
1k
10k
100k
Supply Voltage V
CC
(V)
Supply Voltage V
CC
(V)
Input Frequency f
IN
(Hz)
P
O
, THD
– V
IN
G
V
, THD
– V
CC
V
no
– R
g
100
100
10
1.0
V
CC
= 15V
R
L
= 3½
Both ch. drive
1kHz
10kHz
100Hz
V
IN
= 3V
f
IN
= 1kHz
R
L
= 3
V
CC
= 15V
DIN/Audio With filter
30
30
47
46
V
C
= 5V
½
Both ch. drive
9
8
0.8
10
10
Gv
45
7
3
3
44
6
0.6
1
1
43
5
0.3
0.3
42
41
4
3
0.4
0.1
0.1
40
2
0.2
0.03
0.03
TH
D
1
V
C
= 5V
0.01
0.01
0
0
0
0.1 0.3
1
3
10
30
100
0
4
8
12
16
20
10
100
1k
10k
100k
Input Voltage V
IN
(mV)
Supply Voltage V
CC
(V)
Resistance R
g
(
½
)
RR
– f
ripple
RR
– V
ripple
RR
– V
CC
100
100
80
V
CC
= 15V
V
R
= 280mVrms
R
g
= 0
DIN/Audio With filter
V
CC
= 15V
f
R
= 120Hz
R
g
= 0
DIN/Audio With filter
V
R
= 280mVrms
f
R
= 120Hz
R
g
= 0
DIN/Audio With filter
70
80
80
60
60
60
50
40
40
40
30
C
R– F
= 100µF
(same for 47µF)
20
20
20
10
0
10
20
30
100 200 300 500
1k
0
0.1
0.2
0.3 0.5
1
3
5
10
0
0
4
8 12
16 20
24
28
32
Ripple Frequency f
ripple
(Hz)
Ripple Voltage V
ripple
(V)
Supply Voltage V
CC
(V)
Plik z chomika:
aos.artur
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