ROHM BA5417 Datasheet

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.

OUT

P

= 2.8W (VCC = 9V, RL 3Ω, THD = 10%)

OUT

P

= 5.0W (VCC = 12V, RL 3Ω, THD = 10%)

2) Excellent audio quality
THD = 0.1% (f = 1kHz, P

NO

V

= 0.3mVrms (Rg = 10kΩ)

RR = 55dB (f

RR

= 100Hz)

O

= 0.5W)

3) Wide supply voltage operating range

CC

(V

= 6.0V to 15.0V).

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.

Absolute maximum ratings

!!!!

Parameter Symbol Limits Unit
Power supply voltage V
Power dissipation Pd
Operating temperature Topr −20 ~ +75 °C
Storage temperature Tstg −55 ~ +150 °C

1 Must be within standby values.

∗

2 Ta=75

°C(

∗

Recommended operating conditions

!!!!

when using infinite heatsink)

Parameter Symbol Limits Unit

(Ta = 25°C)

CC

CC

V

(Ta = 25°C)

6.0 ~ 15.0

20

15

1

∗

2

∗

V

W

VPower supply voltage

Audio ICs

Block diagram

!!!!

T . S . D

BA5417

+

30k

−

30k

+

−

CC

V

B S B S F I L T E R

GND

1 2

(N.C.)

3 4 5 6 7 8 9 10 11 12 13 14 15

CC

OUT2

V

OUT1

BS2

POWER

BS1

POWER-GND

S T . B Y

STBY

30k

FILTER

NF1

30k

45

IN1

IN2

45

GND1

PRE

NF2

PRE-GND1

GND2

PRE

PRE-GND2

Audio ICs

Electrical characteristics

!!!!

_ (unless otherwise noted, Ta=25°C, Vcc=9.0V, R

Parameter Symbol Min. Typ. Max. Unit Coniditions
Quiescent current
Rated output voltage 1
Rated output voltage 2
Closed-loop voltage gain
Output noise voltage
Total harmonic distortion THD − 0.1 1.0 %
Ripple rejection RR 42 55 − dB
Crosstalk CT 48 65 −
Circuit current

(with standby switch off)
Standby pin current when on

Standby pin
control voltage

Measurement circuit

!!!!

Activated
Not activated

O

I

P

OUT

1

P

OUT

2

VC

G

NO

V

I

OFF

I

SIN

V

STH

V

STL

L

=3Ω, RF=120Ω, Rg=600Ω, f=1kHZ, OTL mode)

−

22 45 mA

2.2 2.8 − W

4.0 5.0 − W
43

−

45 47 dB

0.3 1.0 mVrms

− 020µA

− 0.15 0.4 mA

3.5

−

−−−1.2 V −

dB

V

IN

=

0Vrms

V
TDH=10%
TDH=10%, V

=

10kΩ, DIN AUDIO

Rg

OUT

=

0.5W

P
f

RR

=

100Hz, V

O

=

0dBm

V

STBY

=

V

CC

V

CC

=

RR

=

BA5417

12V

−

−10dBm

−

−

T . S . D

CC

V

B S B S F I L T E R

R

2.2

C

7

0.15µ

POWER

2

1 2

(N.C.)

R

2.2

0.15µ

3 4 5 6 7 8 9 10 11 12 13 14 15

C

C

2

+

100µ

+

1

C

1

C

3

1000µ

R L

1000µ

+

1000µ

6

+

C

100µ

4

C

5

+

R L

GND

∗

S T . B Y

1

Fig.1

+

30k

−

30k

45

F1

+

R

C

8

120

+

C

9

47µ

47µ 47µ

+

30k

−

30k

45

GND1

PRE

R

F2

120

+

C

10

1 V

STBY

∗

GND2

PRE

=3.5V ~ V

CC