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AM7945JC 데이터시트(PDF) 8 Page - Advanced Micro Devices

부품명 AM7945JC
상세설명  Subscriber Line Interface Circuit
PDF  18 Pages
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제조업체  AMD [Advanced Micro Devices]
홈페이지  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM7945JC 데이터시트(HTML) 8 Page - Advanced Micro Devices

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8
Am7945 Data Sheet
Supply Currents, BAT = –48 V
VCC,
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
VEE,
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
VBAT,
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 (VRIPPLE = 50 mVrms), Active Normal State
VCC
50 Hz to 3.4 kHz
30
40
dB
5
VEE
50 Hz to 3.4 kHz
28
35
VBAT
50 Hz to 3.4 kHz
28
50
Effective internal resistance
CAS pin to GND
85
170
255
k
Ω
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
Ω
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
Ω
–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
IOUT = 0.8 mA
0.4
V
Output High voltage
IOUT = –0.1 mA
2.4
ELECTRICAL CHARACTERISTICS (continued)
Description
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
I
DET
375
R
D
---------
=



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