ICs for Audio Common Use
1
AN7196K
Dual 15 W BTL power IC for car audio
s
Overview
The AN7196K is an audio power IC developed for the
sound output of car audio (dual 15 W). Especially, this
circuit has solved the problem of heat radiation design
inherent to a single chip IC with 4-channel audio ouputs
and realized a corresponding space saving at the same
time.
In addition, it is incorporating various protection cir-
cuits to protect the IC from destruction by GND-open
short-circuit to GND and power supply surge which are
the most important subjects of power IC protection, and
the IC will largely contribute to a high reliability design
of equipment.
It is also incorporating the industry's first perfect
muting circuit, which is free from shock noise, so that a
shock noise design under the set transient condition can
be made easily when the muting circuit is used together
with its standby function.
The AN7196K is pin compatible with the AN7191NK
(dual 20 W), so that the identical pattern design is allowed
for high-class types as well as popular types.
s
Features
Built-in various protection circuits (realizing high breakdown voltage against destruction )
Power supply surge breakdown voltage of 100 V or more
Ground open breakdown voltage of 16 V or more
Built-in standby function (free from shock noise at standby on/off)
Built-in muting function (the industry's first)
Free from shock noise at mute-on/off
Adapting attenuator method so that abnormal sound due to waveform deformation is not generated
Attack time, recovery time of 50 ms or less
Space saving design is possible with a small size package
A heat radiation design that has been a problem particularly in a 4-ch. single chip IC can be done by the conventional
method.
Reduction in external components (parts reduction to half compared with the AN7176K)
It eliminates the need for NF and BS electrolytic capacitors,
Muting function is unnecessary
Power supply choke coil is unnecessary
Provided with beep sound input pin
Pin compatible with the AN7191NK (dual 20 W)
s
Applications
Car audio
HZIP016-P-0665A
11.30.3
7.70.3
(10.0)
29.60.3
(10.0)
20.00.3
28.00.3
29.750.3
(0.6)
0.6
(0.889)
(1.1)
(0.889)
16
1
+0.15 -
0.10
3.6
R1.8
3.50.2
1.788
1.450.15
1.800.15
(2.54)
1.2+0.1
0.25
+0.10 -
0.05
(12.5)
(14.1)
(18.7)
(1.2)
(21.5)
(17.63)
R0.7
Unit : mm
AN7196K
ICs for Audio Common Use
2
s
Block Diagram
s
Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Supply voltage
*2
V
CC
25
V
Peak supply voltage
*3
V
surge
80
V
Supply current
I
CC
9.0
A
Power dissipation
*4
P
D
59
W
Operating ambient temperature
*1
T
opr
-
30 to
+
85
C
Storage temperature
*1
T
stg
-
55 to
+
150
C
Note) *1 : All items are at T
a
=
25
C, except for the operating ambient temperature and storage temperature.
*2 : Without signal
*3 : Time = 0.2 s
*4 : T
a
=
85
C
Ref.
Protection Cct.
Att.Con.
Att.
Att.
Att.
Att.
3
4
2
14
13
12
1
V
CC
8
GND(sub)
GND(input)
Beep In
Ch.1 In
Ch.2 In
Ripple f
ilter
Standby
Mute
10
6
5
7
11
9
N.C.
16
15
Ch.1 GND
Ch.2 GND
Ch.1 Out (
-
)
Ch.1 Out (
+
)
Ch.2 Out (
-
)
Ch.2 Out (
+
)
s
Pin Descriptions
Pin No.
Description
1
Power supply
2
Ch.1 output (
+
)
3
Grounding (output ch.1)
4
Ch.1 output (
-
)
5
Standby
6
Ch.1 input
7
Muting
8
Grounding (sub)
Pin No.
Description
9
Grounding (input)
10
Beep sound input
11
Ch.2 input
12
Ripple filter
13
Ch.2 output (
-
)
14
Grounding (output ch.2)
15
Ch.2 output (
+
)
16
N.C.
ICs for Audio Common Use
AN7196K
3
5 V
0 V
500 ms
500 ms
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Quiescent current
I
CQ
V
IN
=
0 mV, R
L
=
4
120
250
mA
Standby current
I
STB
V
IN
=
0 mV, R
L
=
4
1
10
A
Output noise voltage
*1
V
NO
R
g
=
4.7 k
, R
L
=
4
0.22
0.5
mV[rms]
Voltage gain 1
G
V1
V
IN
=
40 mV, R
L
=
4
32
34
36
dB
Total harmonic distortion 1
THD
1
P
O
=
0.5 W, R
L
=
4
0.07
0.4
%
Maximum output power 1
P
O1
THD
=
10
%
, R
L
=
4
12
14
W
Ripple rejection ratio
*1
RR
R
L
=
4
, R
g
=
4.7 k
,
60
70
dB
V
r
=
1 V[rms], f
r
=
1 kHz
Channel balance
CB
V
IN
=
40 mV, R
L
=
4
0
1
dB
Cross-talk
*1
CT
V
IN
=
40 mV, R
L
=
4
,
55
65
dB
R
g
=
4.7 k
Output offset voltage
V
Off
R
g
=
4.7 k
, R
L
=
4
-
250
0
250
mV
Muting effect
*1
MT
V
IN
=
40 mV, R
L
=
4
70
82
dB
Input impedance
Z
i
V
IN
=
0.3 V
DC
22
28
35
k
Voltage gain 2
G
V2
V
IN
=
40 mV, R
L
=
2
32
34
36
dB
Total harmonic distortion 2
THD
2
P
O
=
0.5 W, R
L
=
2
0.1
0.5
%
Maximum output power 2
P
O2
THD
=
10
%
, R
L
=
2
12
20
W
Shock noise
*2
V
S
R
L
=
4
, R
g
=
4.7 k
-
100
0
100
mV[p-0]
V
STB
=
on/off,
50 Hz HPF-on
Total harmonic distortion 3
THD
3
V
IN
=
10 mV, f
IN
=
20 kHz
0.10
0.5
%
R
g
=
4.7 k
, R
L
=
s
Electrical Characteristics at V
CC
=
13.2 V, f
=
1 kHz, T
a
=
25
C
Note) *1 : Measurement using a bandwidth 15 Hz to 30 kHz (12 dB/OCT) filter.
*2 : For V
STB
=
on/off, change over the standby terminal by the voltages of 0 V and 5 V at the time shown below.
Standby terminal voltage
s
Recommended Operating Range
Parameter
Symbol
Range
Unit
Supply voltage
V
CC
8.0 to 18.0
V
AN7196K
ICs for Audio Common Use
4
s
Usage Notes
1. Always attach an outside heat sink to use the chip. In addition, the outside heat sink must be fastened onto a
chassis for use.
2. Connect the cooling fin to GND potential.
3. Avoid short-circuit to V
CC
and short-circuit to GND, and load short-circuit.
4. The temperature protection circuit will be actuated at T
j
=
approx. 150C, but it is automatically reset when the
chip temperature drops below the above set level.
5. The overvoltage protection circuit starts its operation at V
CC
=
approx. 20 V.
6. Take into consideration the heat radiation design particularly when V
CC
is set high or when the load is 2
.
7. When the beep sound function is not used, open the beep sound input pin (pin 10) or connect it to pin 9 with
around 0.01
F capacitor.
8. Connect only pin 9 (ground, signal source) to the signal GND of the amplifier in the previous stage. The
characteristics such as distortion, etc. will be improved.
s
Technical Information
P
D
T
a
curves of HZIP016-P-0665A
P
D
T
a
65
62.5
5
10
15
10.4
17.9
20
25
30
35
40
45
50
55
60
41.7
31.3
3.0
0
0
25
50
75
100
125
150
Infinity heat sink
1
C/W
heat sink
2
C/W
heat sink
3
C/W
heat sink
5
C/W
heat sink
10
C/W
heat sink
Without heat sink
R
th (j
-
c)
=
2
C/W
R
th (j
-
a)
=
42
C/W
Ambient temperature T
a
(
C)
Po
wer dissipation P
D
(W)
ICs for Audio Common Use
AN7196K
5
3
4
2
14
13
12
1
8
Beep In
GND(sub)
GND(input)
N.C.
Ch.1 In
Ch.2 In
Ripple f
ilter
Standby
Mute
10
6
5
7
11
9
15
Ch.1 GND
Ch.2 GND
Ch.1 Out (
-
)
Ch.1 Out (
+
)
Ch.2 Out (
-
)
Ch.2 Out (
+
)
16
V
CC
s
Application Circuit Example
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