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| 型號： | AM79M576A-1 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | Metering Subscriber Line Interface Circuit |
| 中文描述： | 計量用戶線接口電路 |
| 文件頁數(shù)： | 7/18頁 |
| 文件大?。?/td> | 252K |
| 代理商： | AM79M576A-1 |
SLIC Products
7
ELECTRICAL CHARACTERISTICS (continued)
Description
Test Condition (See Note 1)
Min
Typ
Max
Unit
Note
Total Harmonic Distortion (2- to 4-Wire or 4- to 2-Wire) without Metering (See Test Circuits A and B)
0 dBm
+9 dBm
300 Hz to 3.4 kHz
–
64
–
55
–
50
–
40
–
35
dB
Total Harmonic Distortion
with metering
4, 11
Idle Channel Noise without Metering
Psophometric weighted noise
2-wire
4-wire
2-wire
4-wire
–
75
–
80
–
46
–
52
dBmp
7
Psophometric idle channel noise
with metering
4, 7, 12
4, 7, 12
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
1 kHz to 15 kHz
Above 15 kHz
256 kHz and harmonics
–
76
–
76
–
57
–
70
–
85
–
57
dBm
4, 5, 9
4, 5, 9
4, 5
4, 5, 9
4, 5, 9
4, 5
Longitudinal
Line Characteristics (See Figures 1a, 1b, and 1c) BAT = 48 V, V
BAT
= –47.3 V, R
L
= 600
and 900
Apparent battery voltage
Active state
Loop current accuracy
Active state
R
L
= 600
R
L
= 0
Loop current limit accuracy
OHT state
I
L
= 13.5 mA, R
L
= 0
Loop current
—
Active state
R
L
= 2.25 k
Loop current
—
Active state
Battery =
–
48.0 V
R
L
= 0
Loop current
—
OHT
Battery =
–
47.0 V
R
L
= 0
Fault current limit, I
L
LIM, A and
B shorted to GND in OHT state
Fault current limit, I
L
LIM,
A and B shorted to GND in
Active state
Battery Current in Fault Condition
OHT state
A and B to GND
Active state
A and B to GND
Power Dissipation
On hook, Open Circuit state
On hook, OHT state
On hook, Active state
Off hook, OHT state
R
L
= 600
Off hook, Active state
(See Figure 2)
R
L
= 220
47
–
7.5
50
53
+7.5
V
%
Loop current, Tip Open state
Open Circuit state
1.0
mA
–
15
+15
%
10
14.33
17.5
41
R
L
= 1.96 k
50
mA
R
L
= 2.25 k
9.35
15.5
56
80
110
40
55
mA
40
140
190
350
750
900
80
200
300
500
900
1100
mW
R
L
= 600
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