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參數(shù)資料
| 型號： | AM7945 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | Subscriber Line Interface Circuit |
| 中文描述： | 用戶線接口電路 |
| 文件頁數(shù)： | 8/18頁 |
| 文件大小： | 157K |
| 代理商： | AM7945 |
8
Am7945 Data Sheet
Supply Currents, BAT =
–
48 V
V
CC
,
On-hook supply current
Open Circuit state
OHT state
Standby state
Active state
1.7
4.9
2.2
6.3
2.5
7.5
3.0
8.5
mA
V
EE
,
On-hook supply current
Open Circuit state
OHT state
Standby state
Active state
0.7
2.0
0.77
2.1
2.0
3.5
2.0
5.0
V
BAT
,
On-hook supply current
Open Circuit state
OHT state
Standby state
Active state
0.18
1.9
0.45
4.2
1.0
4.7
1.5
5.7
Power-Supply Rejection Ratio (V
RIPPLE
= 50 mVrms), Active Normal State
V
CC
50 Hz to 3.4 kHz
30
40
dB
5
V
EE
50 Hz to 3.4 kHz
28
35
V
BAT
50 Hz to 3.4 kHz
28
50
Effective internal resistance
CAS pin to GND
85
170
255
k
4
RFI rejection
100 kHz to 30 MHz (See Figure E)
1.0
mVrms
Off-Hook Detector
Current threshold
–
12
+12
%
Ground-Key Detector Thresholds, Active State, BAT =
–
48 V
Ground-key resistance threshold
B(RING) to GND
2.0
5.0
10.0
k
Ground-key current threshold
B(RING) to GND
9
mA
Ring-Trip Detector Input
Bias current
–
0.5
–
0.05
μA
Offset voltage
Source resistance = 2 M
–
50
0
+50
mV
6
Logic Inputs (C3
–
C1, E0, E1)
Input High voltage
2.0
V
Input Low voltage
0.8
Input High current
All inputs except C3 and E1
–
75
40
μA
Input C3
–
75
200
Input E1
–
75
45
Input Low current
–
0.4
mA
Logic Output (DET)
Output Low voltage
I
OUT
= 0.8 mA
0.4
V
Output High voltage
I
OUT
=
–
0.1 mA
2.4
ELECTRICAL CHARACTERISTICS (continued)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
I
DET
R
D
--------
=
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| 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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