BD5471MUV_13 Datasheet, PDF (11/25 Pages) Rohm – Analog Input Stereo Class-D Speaker Amplifier

BD5471MUV
Technical Note
●Cntrol Terminal and output
Audio IN
[ Input ]
EAPD
[ Input ]
BEEP
[ Input ]
Audio Signal
Beep Signal
Audio Signal
Beep Signal Audio Signal
In case of EAPD=L,
it doesn’t output.
Equal to or more than
0.125sec.
Beep Signal
f=300~1760Hz
3.3msec 570usec
MUTE
[ Input ]
It detects that
BEEP was inputted.
It makes an amplifier state to
standby mode if BEEP isn’t
inputted equal to or more than 3.3msec.
Active
Active
Amplifier state
Standby
Standby
Amplifier is a standby.
The current consumption reduces.
Standby
Shutdown
The current consumption
in the audio part is zero.
Speaker output
MUTE
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
EAPD
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
Input
BEEP
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
Audio IN
No signal
signal
No signal
signal
No signal
signal
No signal
signal
No signal
signal
No signal
signal
No signal
signal
No signal
signal
Output
Amplifier state
Speaker output
L(Shutdown)
Hiz
L(Shutdown)
Hiz
L(Shutdown)
Hiz
L(Shutdown)
Hiz
L(Shutdown)
Hiz
L(Shutdown)
Hiz
L(Shutdown)
Hiz
L(Shutdown)
Hiz
L(Standby)
Hiz
L(Standby)
Hiz
H(Active)
No signal
H(Active)
signal
H(Active)
No signal
H(Active)
signal
H(Active)
No signal
H(Active)
signal
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11/21
2013.11 - Rev.B