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SLIC Products
7
ELECTRICAL CHARACTERISTICS (continued)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Balance Return Signal (4- to 4-Wire, See Test Circuit B)
Gain accuracy
0 dBm, 1 kHz
0
°
C to +70
°
C
0 dBm, 1 kHz
–
40
°
C to +85
°
C
0 dBm, 1 kHz
0
°
C to +70
°
C
0 dBm, 1 kHz
–
40
°
C to +85
°
C
–
1*
–
1
–
0.15
–
0.20
–
0.1
–
0.15
+0.15
+0.20
+0.1
+0.15
dB
4
4
Variation with frequency
300 Hz to 3.4 kHz
(relative to 1 kHz):
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
0.1
–
0.15
+0.1
+0.15
4
Gain tracking
+7 dBm to
–
55 dBm:
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
0.1
–
0.15
+0.1
+0.15
4
4
Group delay
f = 1 kHz
5.3
μ
s
4
Total Harmonic Distortion (2- to 4-Wire or 4- to 2-Wire, See Test Circuits A and B)
Total harmonic distortion
0 dBm, 300 Hz to 3.4 kHz
+9 dBm, 300 Hz to 3.4 kHz
–
64
–
55
–
50
–
40
dB
Idle Channel Noise
C-message weighted noise
2-wire:
2-wire:
2-wire:
0
°
C to +70
°
C
0
°
C to +70
°
C
–
40
°
C to +85
°
C
0
°
C to +70
°
C
0
°
C to +70
°
C
–
40
°
C to +85
°
C
0
°
C to +70
°
C
0
°
C to +70
°
C
–
40
°
C to +85
°
C
0
°
C to +70
°
C
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
1*
+7
+7
+7
+15
+12
+15
dBrnC
4
4-wire
4-wire
4-wire
–
1*
+7
+7
+7
+15
+12
+15
4
Psophometric weighted noise
2-wire
2-wire
2-wire
–
1*
–
83
–
83
–
83
–
75
–
78
–
75
dBmp
7
4
4-wire
4-wire
4-wire
–
1*
–
83
–
83
–
83
–
75
–
78
–
75
7
4
Single Frequency Out-of-Band Noise (See Test Circuit E)
Metallic
4 kHz to 9 kHz
9 kHz to 1 MHz
256 kHz and harmonics
–
76
–
76
–
57
dBm
4, 5, 9
4, 5, 9
4, 5
Longitudinal
1 kHz to 15 kHz
Above 15 kHz
256 kHz and harmonics
–
70
–
85
–
57
4
4, 5, 9
4, 5
DC Feed Currents (See Figure 1) BAT = –48 V
Active state loop-current accuracy
I
LOOP
(nominal) = 40 mA
R
L
= 600
R
L
= 600
R
L
= 0
A and B shorted to GND
–
7.5
+7.5
%
OHT state
18
20
22
mA
Tip Open state
1.0
Open Circuit state
1.0
Fault current limit, I
L
LIM (I
AX
+ I
BX
)
130
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| AM79534-2PC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
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