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Número de pieza
componentes Descripción
CXA1878Q Ver la hoja de datos (PDF) - Sony Semiconductor
Número de pieza
componentes Descripción
Fabricante
CXA1878Q
Dolby∗ B-C Type Noise Reduction System with Recording/Playback Equalizer Amplifier
Sony Semiconductor
CXA1878Q Datasheet PDF : 36 Pages
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Pin
No.
Symbol
Typical pin voltage
I/O Z (in)
DC AC
Equivalent circuit
CXA1878Q
Description
13 BIAS M
14 BIAS C
— —O—
13
15 BIAS N
14
15
Recording bias control
voltage output
100k
2.5V
16 AMS SW when
—
I
—
50k 5k
16
open
5k
24k
DGND
AMS mode control
∗
Mode select switch for
AMS/BS amplifier
High: BS mode
Medium: AMS mode
Low: AMS/BS OFF mode
[BS mode = Music
signal interval detection
during playback]
[AMS mode = Music
signal detection during
FF/REW]
2.5V
50k 5k
17 PASS SW when — I —
17
open
5k
PASS mode control
H : PASS
M : MUTE
L : NR ON
DGND
18 METER SW — — I —
10k
18
DGND
Meter mode control
∗
Meter amplifier output
ON/OFF select switch
High: Meter output
OFF (mute)
Low : Meter output ON
–6–
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