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Philips Semiconductors
Using the NE/SA5234 amplifier
+16dB
0dB
-20dB
-40dB
-60dB
-80dB
1991 Oct
1
[ ]
2
INPUT TO G
AND RECT
V
COMPRESSION
RMS
IN
(COMPRESSOR
A
OUT)
B
2.65V
1.67V
420mV
42mV
4.2mV
TRANSMISSION
420 V
MEDIUM
42 V
Figure 25. NE570/571/SA571 System Level
A
C
S
I
O
+V
CC
+5V
1.0
Figure 26. Fiber Optic Data Receiver
2
[ ]
REL LEVEL
DB
EXPANDOR
OUT
(EXPANDOR
D
IN)
C
+16.0
+12.0
0.0
-20
-40
-60
-80
+5V
4
10mV
R
+
+
–
–
100k
10k
R
t
1k
R
1
2/3 V
CC
+5V
+
R
T
+
–
–
C
T
5k
16
Application note
AN1651
ABS LEVEL
dBM
+10.68
+6.68
-5.32
-25.32
-45.32
-65.32
-85.32
SL00653
1V
1k
SL00654
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