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CXA1878Q Datasheet(PDF) 6 Page - Sony Corporation

Part No. CXA1878Q
Description  Dolby B-C Type Noise Reduction System with Recording/Playback Equalizer Amplifier
Download  36 Pages
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Maker  SONY [Sony Corporation]
Homepage  http://www.sony.co.jp
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CXA1878Q Datasheet(HTML) 6 Page - Sony Corporation

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CXA1878Q
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15
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BIAS M
BIAS C
BIAS N
AMS SW
PASS SW
METER SW
2.5V
when
open
2.5V
when
open
O
I
I
I
Recording bias control
voltage output
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]
PASS mode control
H : PASS
M : MUTE
L : NR ON
Meter mode control
∗ Meter amplifier output
ON/OFF select switch
High: Meter output
OFF (mute)
Low : Meter output ON
100k
14
15
13
50k
5k
16
DGND
5k
24k
50k
5k
DGND
5k
17
DGND
10k
18
DC
AC
Pin
No.
Symbol
I/O
Z (in)
Equivalent circuit
Description
Typical pin voltage


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