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SLIC Products
7
ELECTRICAL CHARACTERISTICS (continued)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Idle Channel Noise (2-Wire and 4-Wire)
C-message weighted
2-wire,
0
°
C to +70
°
C
–
40
°
C to +85
°
C
+7
+7
+10
+12
dBrnc
4
4-wire,
0
°
C to +70
°
C
–
40
°
C to +85
°
C
+7
+7
+10
+12
Psophometric weighted
2-wire,
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
83
–
83
–
78
dBmp
4
4-wire,
0
°
C to +70
°
C
–
40
°
C to +85
°
C
–
83
–
83
–
75
4
Line Characteristics, Active State (See Figure 1)
Short loops, Active state
BAT =
–
48 V, R
LDC
= 600
24.7
29.3
mA
Long loops, Active state
BAT =
–
48 V, R
LDC
= 1.9 k
17.5
OHT state
BAT =
–
48 V, R
LDC
= 600
15.5
20.5
Standby state
T
A
= 25
°
C
0.7I
L
I
L
1.3I
L
R
L
= 600
,
BAT =
–
48 V
T
A
= 70
°
C
15.0
17.4
Loop current
Tip Open state, R
L
= 0
100
μA
Disconnect state, R
L
= 0
100
Tip Open state, Bwire to GND
21
30
44
mA
Tip Open state, Bwire = BAT + 6 V
20
30
45
I
L
LIM (I
TIP
+ I
RING
)
Tip and ring shorted to GND
100
130
Ground-start signaling (tip voltage)
Active state, R
TIP
to
–
48 V = 7.0 k
R
RING
to GND = 100 k
–
7.5
–
5.0
V
Open circuit voltage
Active and OHT state, BAT =
–
48 V
40.5
42.0
Power Dissipation, BAT =
–
48 V
On hook, Open Circuit state
25
100
mW
On hook, OHT state
120
210
On hook, Active state
R
TMG
= Open
R
TMG
= 1700
160
195
230
280
On hook, Standby state
35
100
Off hook, OHT state
R
L
= 300
,
R
TMG
=
∞
, BAT =
–
48 V
735
1100
Off hook, Active state
R
L
= 300
,
R
TMG
=
∞
, BAT =
–
48 V
R
L
= 300
,
R
TMG
=
∞
1.25
0.57
1.60
0.85
W
Off hook, Standby state
R
L
= 600
,
T
A
= 25
°
C
0.68
1.0
I
L
V
R
L
1800
+
------------------------------
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| AM79489 | SUBSCRIBER LINE INTERFACE CIRCUIT |
| AM79489-1JC | SUBSCRIBER LINE INTERFACE CIRCUIT |
| AM79489-2JC | SUBSCRIBER LINE INTERFACE CIRCUIT |
| AM79489-3JC | SUBSCRIBER LINE INTERFACE CIRCUIT |
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| AM7945JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| AM7946-1JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
| AM7946-2JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| AM7946-3JC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
| AM7946-4JC | 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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