CXA1897Q 데이터 시트보기 (PDF) - Sony Semiconductor
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CXA1897Q Datasheet PDF : 22 Pages
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CXA1897Q
Pin
No.
Symbol
DC
voltage
I/O
I/O
resistance
Equivalent circuit
Vcc
Vcc
Description
×2
10k
6 AGC OUT1 4.0V
O
147Ω
147
6
500 21k
31 AGC OUT2
31
500
5k
AGC output pin.
×4
VGS
7 D RECIN1 4.0V I 40kΩ
30 D RECIN2
9 D PBIN1 4.0V I 40kΩ
28 D PBIN2
GND
Vcc
Vcc
7
147
9
28
30
40k
VGS
15k
GND
Vcc
15k VGS
Vcc
Dolby NR recording
(encoding) input pin.
Dolby NR playback (decoding)
input pin.
8 D IREF
1.2V — —
×2
4k
147
8
×4
Connects the 18kΩ resistor for
providing the reference
current of the Dolby NR
section internal filter.
GND
Vcc
Vcc
10 NRSW
2.5V I
(For
OPEN)
53kΩ
147 50k 5k
10
5k
GND
GND
Dolby NR ON/OFF switch.
Low : ON
Medium :OFF
High : 1.7 times normal
speed
—5—
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