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Philips Semiconductors Application note
AN1651Using the NE/SA5234 amplifier
1991 Oct
16
42µV
420µV
+16dB
0dB
-20dB
-40dB
-60dB
-80dB
+16.0
0.0
-20
-40
-60
-80
+12.0
A
B C
D
TRANSMISSION
MEDIUM
DB dBM
+10.68
-5.32
-25.32
-45.32
-65.32
-85.32
+6.68
EXPANDOR
OUT
COMPRESSION
IN
V
RMS
2.65V
420mV
42mV
4.2mV
1.67V
(COMPRESSOR
OUT)
(EXPANDOR
IN)
REL LEVEL ABS LEVEL
[ ]
1
2
[ ]
2
INPUT TO ∆G
AND RECT
SL00653
Figure 25. NE570/571/SA571 System Level
+
–
+
–
+
–
+
–
A
R
+5V
1V
1k
5k
10mV
10k
+V
CC
C
T
R
T
100k
2/3 V
CC
I
O
C
S
R
t
R
1
+5V
1.0
+5V
4
1k
SL00654
Figure 26. Fiber Optic Data Receiver