MB3892 데이터 시트보기 (PDF) - Fujitsu
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MB3892 Datasheet PDF : 40 Pages
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MB3892
• Speaker Amp.
PDSP
PDRCV
ON/
OFF BIAS
BP
18
4.7 µF +
−
18 kΩ
24 kΩ
PDSP
IN
L
19
H
FB
L
20
H
PDSP
CHOISE
L HL H
5 kΩ
+
−
30
kΩ
30 kΩ
+
−
5 kΩ
+
−
30
kΩ
30 kΩ
+
−
BUZZSEL
OUTB
26
10 kΩ
Receiver Amp.
10 kΩ
25
OUTA
32 Ω
SPOUTB
23
10 kΩ
Loudspeaker Amp.
8Ω
10 kΩ
22
SPOUTA
Rfb
Rfb
Rin Cin
PDRCV PDSP CHOISE BUZZSEL Operating Amp.
Operation mode
L
L
×
×
Standby
H
L
H
L Receiver Amp. Receiver (BTL drive)
H
L
L
L Receiver Amp. Earphone mode (single drive)
L
H
H
L Loudspeaker Amp. Loudspeaker Amp. (BTL drive)
L
H
L
H Loudspeaker Amp. Short wave form output (open collector)
H
H
×
When both of PDRCV/PDSP is “H” level,
L Loudspeaker Amp. the operation of loudspeaker Amp. has
priority.
8
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