stlc3040 STMicroelectronics, stlc3040 Datasheet - Page 39

• Manufacturer Part Number: stlc3040
• Description: Subscriber Line Interface Codec Filter, Cofislic
• Manufacturer: STMicroelectronics

SIGNAL TO NOISE RATIO
Use the same Test Configuration of Gain Tracking Test.
Figure 16. (Valid for 0 < T
Figure 17: Overload Compression (Transmit: measured with sine wave f = 984Hz).
TRANSMIT:
RECEIVE:
(dB)
(dB)
S/D
S/D
35
30
25
20
15
10
35
30
25
20
15
10
5
0
5
0
-50
-50
CLOSED LOOP as per Q.552 ITU-T specifications with line impedance = 900
-45
-45
9
8
7
6
5
4
3
2
1
0
-40
-40
amb
-35
-35
D96TL259C
1
< 70°C)
-30
-30
2
-25
-25
-20
-20
3
INPUT LEVEL (dBm0)
INPUT POWER (dBm)
INPUT LEVEL (dBm0)
-15
-15
4
-10
-10
-5
5
-5
0
0
6
5
5
ACCEPTABLE
7
REGION
Input Level
Input Level
(dBm0)
(dBm0)
-44.5
-44.5
-40
-30
-20
-10
-40
-30
-20
-10
+3
+3
0
0
8
D96TL266A
9
S/D
S/D
CLOSED LOOP
STLC3040
CLOSED LOOP
19.725
24.625
32.716
34.709
34.997
34.538
34.97
23.02
34.95
(dB)
27.9
35
35
35
35
39/49
(dB)