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 |
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1) High output. |
4) Switching noise (“pop” noise) generated when the |
POUT = 2.8W (VCC = 9V, RL 3Ω, THD = 10%) |
power is switched on and off is small. |
POUT = 5.0W (VCC = 12V, RL 3Ω, THD = 10%) |
5) Ripple mixing when motor starts has been prevented. |
2) Excellent audio quality |
6) Built-in thermal shutdown circuit. |
THD = 0.1% (f = 1kHz, PO = 0.5W) |
7) Built-in standby switch. Output is not influenced by |
VNO = 0.3mVrms (Rg = 10kΩ) |
the standby pin voltage. |
RR = 55dB (fRR = 100Hz) |
8) Soft clipping. |
3) Wide supply voltage operating range |
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(VCC = 6.0V to 15.0V). |
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!Absolute maximum ratings (Ta = 25°C)
Parameter |
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Symbol |
Limits |
Unit |
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Power supply voltage |
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VCC |
20 1 |
V |
Power dissipation |
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Pd |
15 2 |
W |
Operating temperature |
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Topr |
−20 ~ +75 |
°C |
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Storage temperature |
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Tstg |
−55 ~ +150 |
°C |
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1 Must be within standby values. |
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2 Ta=75°C(when using infinite heatsink) |
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!Recommended operating conditions (Ta = 25°C) |
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Parameter |
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Symbol |
Limits |
Unit |
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Power supply voltage |
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VCC |
6.0 ~ 15.0 |
V |
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BA5417
Audio ICs
!Block diagram
T . S . D
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VCC |
POWER |
GND |
B S |
B S |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
(N.C.) |
BS2 |
OUT2 |
VCC |
OUT1 |
BS1 |
POWER-GND |
+ |
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+ |
30k |
30k |
− |
− |
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30k |
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30k |
S T . B Y |
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45 |
45 |
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F I L T E R |
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PRE GND1 |
PRE GND2 |
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8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
STBY |
FILTER |
NF1 |
IN1 |
IN2 |
NF2 |
PRE-GND1 |
PRE-GND2 |
BA5417
Audio ICs
!Electrical characteristics
(unless otherwise noted, Ta=25°C, Vcc=9.0V, RL=3Ω, RF=120Ω, Rg=600Ω, f=1kHZ, OTL mode)
Parameter |
Symbol |
Min. |
Typ. |
Max. |
Unit |
Coniditions |
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Quiescent current |
IO |
− |
22 |
45 |
mA |
VIN=0Vrms |
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Rated output voltage 1 |
POUT1 |
2.2 |
2.8 |
− |
W |
TDH=10% |
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Rated output voltage 2 |
POUT2 |
4.0 |
5.0 |
− |
W |
TDH=10%, VCC=12V |
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Closed-loop voltage gain |
GVC |
43 |
45 |
47 |
dB |
− |
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Output noise voltage |
VNO |
− |
0.3 |
1.0 |
mVrms |
Rg=10kΩ, DIN AUDIO |
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Total harmonic distortion |
THD |
− |
0.1 |
1.0 |
% |
POUT=0.5W |
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Ripple rejection |
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RR |
42 |
55 |
− |
dB |
fRR=100Hz, VRR=−10dBm |
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Crosstalk |
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CT |
48 |
65 |
− |
dB |
VO=0dBm |
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Circuit current |
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IOFF |
− |
0 |
20 |
µA |
− |
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(with standby switch off) |
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Standby pin current when on |
ISIN |
− |
0.15 |
0.4 |
mA |
VSTBY=VCC |
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Standby pin |
Activated |
VSTH |
3.5 |
− |
− |
V |
− |
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control voltage |
Not activated |
VSTL |
− |
− |
1.2 |
V |
− |
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!Measurement circuit
T . S . D
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VCC |
POWER |
GND |
B S |
B S |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
(N.C.) |
+ C2 |
1000µ |
C6 + |
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100µ |
+ C4 |
100µ |
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+ C3 |
+ |
C5 |
R1 |
1000µ |
1000µ |
R2 |
2.2 |
2.2 |
C1 |
L |
L |
C7 |
0.15µ |
R |
R |
0.15µ |
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+ |
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+ |
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30k |
30k |
− |
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− |
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30k |
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30k |
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S T . B Y |
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45 |
45 |
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F I L T E R |
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GND1 |
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GND2 |
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PRE |
PRE |
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8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
+ C8 |
RF1 |
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RF2 |
120 |
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120 |
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47µ |
+ C9 |
+ |
C10 |
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47µ |
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47µ |
1
1 VSTBY=3.5V ~ VCC
Fig.1
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