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零件编号
产品描述 (功能)
CXA1878Q 查看數據表(PDF) - Sony Semiconductor
零件编号
产品描述 (功能)
生产厂家
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
31 V
EE
Typical pin voltage
I/O Z (in)
DC AC
–7.0V
Equivalent circuit
32 GP CAL
2.5V
when —
open
I 54k
Ω
54k
32
2.5V
33 REC CAL when —
open
I 54k
Ω
54k
33
CXA1878Q
Description
Negative power supply
Recording equalizer
amplifier high frequency
calibration
∗
Controlled with DC
voltages of 0 to 5V.
High: High frequency
level gain
increased
Low : High frequency
level gain
reduced
∗
Leave this pin open
when not using the
high frequency
calibration function.
Recording equalizer
amplifier calibration
∗
Controlled with DC
voltages of 0 to 5V.
High: Recording level
gain increased
Low : Recording level
gain reduced
∗
Leave this pin open
when not using the
recording calibration
function.
34 NR SW
2.5V
when —
open
I 50k
Ω
34
50k
2k 6k
DV
CC
/2
NR control
High: C type
Medium: B type
Low: NR OFF
35 S SW
2.5V
when
—
open
I 50k
Ω
35
50k
2k 6k
DV
CC
/2
–9–
Dolby S type selection
∗
Select the calibration
mode with this pin.
High: CALIBRATION
Medium: B-C type
Low: S type
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