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BA5417
Audio ICs
High-output dual power amplifier
BA5417
The BA5417 is a 6 to 15V-compatible dual power amplifier developed for use radio cassette players. It is equipped with
standby switching functions for excellent total harmonic distortion and other basic characteristics.
Applications
Radio cassette / Mini compo players
Features
1) High output.
P OUT = 2.8W (V CC = 9V, R L 3
Ω
, THD = 10%)
4) Switching noise (“pop” noise) generated when the
power is switched on and off is small.
5) Ripple mixing when motor starts has been prevented.
6) Built-in thermal shutdown circuit.
7) Built-in standby switch. Output is not influenced by
the standby pin voltage.
8) Soft clipping.
P OUT = 5.0W (V CC = 12V, R L 3
Ω
, THD = 10%)
2) Excellent audio quality
THD = 0.1% (f = 1kHz, P O = 0.5W)
V NO = 0.3mVrms (Rg = 10k
Ω
)
RR = 55dB (f RR = 100Hz)
3) Wide supply voltage operating range
(V CC = 6.0V to 15.0V).
Absolute maximum ratings (Ta = 25
°
C)
Parameter
Symbol
Limits
Unit
Power supply voltage
V CC
20 ∗
1
V
Power dissipation
Pd
15 ∗
2
W
Operating temperature
Topr
−
20 ~
+
75
°
C
Storage temperature
Tstg
− 55 ~ + 150
° C
1 Must be within standby values.
∗
2 Ta
=
75
C(when using infinite heatsink)
Recommended operating conditions (Ta = 25
°
C)
Parameter
Symbol
Limits
Unit
Power supply voltage
V CC
6.0 ~
15.0
V
∗
°
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BA5417
Audio ICs
Block diagram
T . S . D
+
30k
30k
−
30k
30k
S T . B Y
V CC
45
45
B S
B S
F I L T E R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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BA5417
Audio ICs
Electrical characteristics
_ (unless otherwise noted, Ta=25
°
C, Vcc=9.0V, R L =3
Ω
, R F =120
Ω
, Rg=600
Ω
, f=1kH Z , OTL mode)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Coniditions
Quiescent current
I O
−
22
45
mA
V IN
=
0Vrms
Rated output voltage 1
P OUT 1
2.2
2.8
−
W
TDH
=
10%
Rated output voltage 2
P OUT 2
4.0
5.0
−
W
TDH
=
10%, V CC
=
12V
Closed-loop voltage gain
G VC
43
45
47
dB
−
Output noise voltage
V NO
−
0.3
1.0
mVrms Rg
=
10k
Ω
, DIN AUDIO
Total harmonic distortion
THD
−
0.1
1.0
%
P OUT
=
0.5W
Ripple rejection
RR
42
55
−
dB
f RR
=
100Hz, V RR
=−
10dBm
Crosstalk
CT
48
65
−
dB
V O
=
0dBm
Circuit current
(with standby switch off)
I OFF
−
0
20
µ
A
−
Standby pin current when on
I SIN
−
0.15
0.4
mA
V STBY
=
V CC
Standby pin
control voltage
Activated
Not activated
V STH
3.5
−
−
V
−
V STL
−
−
1.2
V
−
Measurement circuit
T . S . D
+
30k
30k
−
30k
30k
S T . B Y
V CC
45
45
B S
B S
F I L T E R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
(N.C.)
C 2
C 6
+
1000 µ
+
100
µ
100 µ
R F1
120
R F2
120
+
C 4
+
C 8
+
C 3
+
C 5
47 µ
+
C 9
C 10
R 1
2.2
R 2
2.2
1000 µ
1000 µ
47
µ
47
µ
C 1
C 7
∗
0.15 µ
0.15
µ
1
∗
1 V STBY =3.5V ~ V CC
Fig.1
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BA5417
Audio ICs
Application example
OTL mode circuit
T . S . D
+
30k
30k
−
30k
30k
RNF1
RNF2
S T . B Y
V CC
45
45
B S
B S
F I L T E R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
N.C.
C 2
1000 µ
C 6
+
100 µ
+
+
C 4
100 µ
+
C 8
R F1
120
CIN
CIN
R F2
120
+
C 3
+
C 5
47
µ
+
C 9
C 10
R 1
2.2
R 2
2.2
1000 µ
1000
µ
47
µ
47
µ
C 1
C 7
0.15 µ
0.15
µ
IN1
IN2
SP
SP
VCC
POWER GND
Fig.2
BTL mode circuit
T . S . D
+
30k
30k
−
30k
30k
S T . B Y
V CC
45
45
B S
B S
F I L T E R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
N.C
+
C 2
1000
µ
C 6
+
100 µ
+
C 4
100
µ
+
C 8
R F1
120
C 10
+
C 3
+
C 5
47
µ
+
C 9
47
µ
R 1
2.2
R 2
2.2
1000
µ
1000
µ
47
µ
VCC
C 1
C 7
0.15
µ
0.15
µ
VST.BY
SP
10k
1k
Note : 3pin,5pin need coupling capacitors (C3,C5 100 µ F) for DC offset voltage.
Fig.3
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BA5417
Audio ICs
Electrical characteristics
OTL mode
10
V CC =9V
R L =3
0.4
THD=10%
f=1kHz
DIN AUDIO
Input both channels
Ω
Input both channels
f=100Hz DIN AUDIO
1k DIN AUDIO
10k 200
20
10
8
•••
•••
R L =3
Ω
∼
80k BPF
0.3
•••
R L =4 Ω
5
10k ch1
ch2
6
2
1
0.2
1k
ch1
ch2
ch1
ch2
0.5
4
R L =8 Ω
0.2
0.1
0.1
2
0.05
100 ch1
ch2
Rg=10k Ω
DIN AUDIO
0
0.0
0
5
10
15
20
0.02
0.05
0.1
0.2
0.5
1
2
3
5
0
5
10
15
20
POWER SUPPLY VOLTAGE : V CC (V)
OUTPUT POWER : P O (W)
POWER SUPPLY VOLTAGE : V CC (V)
Fig.4 Rated output power vs.
Power supply voltage
Fig.5 Total harmonic distortion vs.
Output power
Fig.6 Output noise voltage vs.
Power supply voltage
80
80
50.00
500.0
70
70
15kHz
LPF
40
400
60
ch1 → 2
60
30
300
50
50
ch1
V CC =9V
V O =0dBm
R g =600 Ω
R L =3 Ω
f=20Hz 15kHzLPF
=50 ∼ 10k DIN AUDIO
=20k ∼ 50k 200 ∼ 80kHzBPF
ch2 → 1
V CC =9V
R L =3 Ω
V RR =
I Q
200
∼
80kHz
ch2
20
200
40
40
10dBm
DIN AUDIO
(f=50 ∼ 10kHz)
Rg=600 Ω
−
BPF
V ST . BY =V CC
30
···
30
10
I SIN
(Standby pin supply current)
100
···
···
.0000
.0000
20
20
.0000
4
8
12
16
20.00
20
50
100
300
1k
3k
10k
20k
50k
20
50
100
300
1k
3k
10k
20k
50k
FREQUENCY : f (Hz)
FREQUENCY : f (Hz)
POWER SUPPLY VOLTAGE : V CC (V)
Fig.7 Crosstalk vs. Frequency
Fig.8 Ripple rejection vs. Frequency
Fig.9 Quiescent standby pin supply current vs.
Power supply voltage
12
20
A : INFINITE HEAT SINK
jc=5.0
°
Pd
OTL Stereo
ALUMINUM
W
B : 100cm 2 × 2.0mm
C : 25cm 2 × 2.0mm
D : WITHOUT HEAT SINK
c=56.8 ° C / W
C
/
6
V CC =15V
1.2
10
16
A
8
5
1.0
B
I CC
12
V CC =12V
R L =3 Ω
6
4
0.8
R L =4
Ω
8
C
3
0.6
4
R L =4 Ω
f=1kHz
Drive both
channels
R L =8 Ω
4
2
0.4
2
D
V CC =9V
0
0
1
0.2
25
50
75 100 125 150 175
0.3
0.5
1
2 3 5
4
8
2604
POWER SUPPLY VOLTAGE : V CC (V)
AMBIENT TEMPERATURE : Ta ( ° C)
OUTPUT POWER : Po (W)
Fig.10 Maximum power dissipation vs.
Power supply voltage
Fig.11 Thermal derating curve
Fig.12 Power dissipation vs.
Power supply voltage (R L =4
Ω
)
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