SA572 데이터 시트보기 (PDF) - ON Semiconductor
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SA572 Datasheet PDF : 12 Pages
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SA572
R4
RDC1
RDC2
9.1kW
C2 .1mF
CDC
10mF
9.1kW
CIN1
VIN 2.2mF
R3
17.3kW
C1
−
A1
+
1kW R5
(6,10) VREF
D1 D2
VOUT
CR
10mF
(5,11)
(2,14)
(4,12)
CA
1mF
R1 (7,9)
DG
6.8kW
CIN2
2.2mF
BUFFER
3.3kW
R2
(3,13)
CIN3
2.2mF
(8)
VCC (16)
Figure 7. Basic Compressor Schematic
Basic Compandor System
The above basic compressor and expandor can be
applied to systems such as tape/disc noise reduction, digital
audio, bucket brigade delay lines. Additional system
design techniques such as bandlimiting, band splitting,
1
2
VRMS COMPRESSION
IN
3.0 V
pre-emphasis, de-emphasis and equalization are easy to
incorporate. The IC is a versatile functional block to
achieve a high performance audio system. Figure 8 shows
the system level diagram for reference.
2
REL LEVEL ABS LEVEL
EXPANDOR
OUT
dB
dBM
+29.54
+11.76
547.6 mV
400 mV
100 mV
+14.77
+12.0
0.0
−3.00
−5.78
−17.78
10 mV
−20
−37.78
1 mV
100 mV
10 mV
Figure 8. SA572 System Level
http://onsemi.com
8
−40
−57.78
−60
−77.78
−80
−97.78
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