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參數(shù)資料
| 型號： | AM79R79 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | Ringing Subscriber Line Interface Circuit |
| 中文描述： | 振鈴用戶線接口電路 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 361K |
| 代理商： | AM79R79 |
8
Am79R79 Data Sheet
ELECTRICAL CHARACTERISTICS (continued)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Line Characteristics
I
L
, Loop-current accuracy
I
L
, Long loops, Active state
I
L
in constant-current region, B2EN = 0
R
LDC
= 600
, RSGL = open
R
LDC
= 750
, RSGL = short
0.915I
L
20
20
0.8I
L
I
L
1.085I
L
mA
21.7
I
L
, Accuracy, Standby state
I
L
1.2I
L
I
L
= constant-current region
T
A
= 25
°
C
–
40
°
C to +85
°
C
Active, A and B to ground
OHT, A and B to ground
R
L
= 0
R
L
= 0
B to ground
A to
–
48 V = 7 k
,
B to ground = 100
18
27
39
18
27
55
55
4
I
L
LIM
110
4
I
L
, Loop current, Open Circuit state
I
A
, Pin A leakage, Tip Open state
I
B
, Pin B current, Tip Open state
VA, Standby, ground-start signaling
100
100
μA
34
–
5
mA
–
7.5
V
4
V
AB
, Open Circuit voltage
Power Supply Rejection Ratio (V
RIPPLE
= 100 mVrms), Active Normal State
V
CC
V
NEG
V
BAT1
V
BAT2
Power Dissipation
On hook, Open Circuit state
On hook, Standby state
On hook, OHT state
On hook, Active state
Off hook, Standby state
Off hook, OHT state
Off hook, Active state
Supply Currents
I
CC
,
On-hook V
CC
supply current
42.8
8
50 Hz to 3400 Hz
50 Hz to 3400 Hz
50 Hz to 3400 Hz
50 Hz to 3400 Hz
33
30
30
30
50
40
50
50
dB
5
V
BAT1
V
BAT2
V
BAT1
V
BAT1
V
BAT1
or V
BAT2
V
BAT1
V
BAT2
48
55
200
220
2000
2000
550
100
80
300
350
2800
2200
750
mW
10
R
L
= 300
R
L
= 300
R
L
= 300
10
Open Circuit state
Standby state
OHT state
Active state
–
normal
Open Circuit state
Standby state
OHT state
Active state
–
normal
Open Circuit state
Standby state
OHT state
Active state
–
normal
3.0
3.2
6.2
6.5
0.1
0.1
0.7
0.7
0.45
0.6
2.0
2.7
4.5
5.5
8.0
9.0
0.2
0.2
1.1
1.1
1.0
1.5
4.0
5.0
mA
I
NEG
,
On-hook V
NEG
supply current
I
BAT
,
On-hook V
BAT
supply current
I
L
V
------------------------------------
10V
–
R
L
400
+
=
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