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參數資料
| 型號： | L9312 |
| 英文描述： | Line Interface and Line Access Circuit Forward Battery SLIC and Ringing Relay for TR-57 Applications |
| 中文描述： | 線路接口和線路接入電路轉發電池SLIC和振鈴繼電器的訓練班- 57應用 |
| 文件頁數： | 15/40頁 |
| 文件大?。?/td> | 709K |
| 代理商： | L9312 |
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Data Sheet
July 2001
Forward Battery SLIC and Ringing Relay for TR-57 Applications
L9312 Line Interface and Line Access Circuit
Agere Systems Inc.
15
Electrical Characteristics
(continued)
SLIC Two-Wire Port
Table 6. SLIC Two-Wire Port
* IEEEis a registered trademark of The Institute of Electrical and Electronics Engineers, Inc.
Parameter
Min
70
10
8.5
Typ
—
—
15
Max
—
—
—
Unit
mApeak
mArms
mArms
PT and PR Drive Current = dc + Longitudinal + Signal Currents
Signal Current
Longitudinal Current Capability per Wire (longitudinal current is indepen-
dent of dc loop current)
dc Active Mode Loop Current –
I
LIM
(
R
LOOP
= 100
):
Programming Range (5 Vrms max into 200
ac)
Voltage at V
PROG
dc Current-limit Variation:
V
PROG
= 0.8 V (I
LIMIT
= 40 mA)
Loop Resistance Range (from PT/PR) (3.17 dBm overload into 600
):
I
LOOP
= 20 mA at V
BAT1
= –
48 V
V
REF
Offset at V
PROG
dc Feed Resistance (includes internal SLIC dc resistance and break
switch resistance)
dV/dT Sensitivity at PT/PR
Powerup Open Loop Voltages (V
BAT1
= –
48 V):
Forward/Reverse Active Mode
|
PT
–
PR
|
–
V
BAT1
Voltage at OVH
Forward/Reverse Active Mode
|
PT
–
PR
|
–
V
BAT1
, V
OVH
= 0
Common Mode
Powerup Open Loop Voltages:
Scan Mode
|
PT –
PR
|
–
V
BAT1
Loop Closure Threshold:
Voltage at LCTH
Loop Closure Threshold Hysteresis
Longitudinal to Metallic Balance at PT/PR
(Test Method:
IEEE*
Std. 455):
200 Hz to 3.4 kHz
Metallic to Longitudinal (harm) Balance:
200 Hz to 4000 Hz
10
0.2
—
0
45
0.9
mA
V
—
5
—
%
1900
2.23
–
40
50
—
2.35
—
75
—
2.47
40
110
V
mV
—
200
—
V/
μ
s
5.5
0
5.5
—
—
—
6.1
(V
BAT1
+ 1)/2
15
1.9
—
—
V
V
V
V
0
—
13.5
V
0
—
—
20
V
REF
—
V
%
61
—
—
dB
40
—
—
dB
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