am7945 Advanced Micro Devices, am7945 Datasheet - Page 8

• Manufacturer Part Number: am7945
• Description: Subscriber Line Interface Circuit
• Manufacturer: Advanced Micro Devices

ELECTRICAL CHARACTERISTICS (continued)
8
Supply Currents, BAT = –48 V
V
On-hook supply current
V
On-hook supply current
V
On-hook supply current
Power-Supply Rejection Ratio (V
V
V
V
Effective internal resistance
RFI rejection
Off-Hook Detector
Current threshold
Ground-Key Detector Thresholds, Active State, BAT = –48 V
Ground-key resistance threshold
Ground-key current threshold
Ring-Trip Detector Input
Bias current
Offset voltage
Logic Inputs (C3–C1, E0, E1)
Input High voltage
Input Low voltage
Input High current
Input Low current
Logic Output (DET)
Output Low voltage
Output High voltage
CC
EE
BAT
CC
EE
BAT
,
,
,
Description
RIPPLE
Open Circuit state
OHT state
Standby state
Active state
Open Circuit state
OHT state
Standby state
Active state
Open Circuit state
OHT state
Standby state
Active state
50 Hz to 3.4 kHz
50 Hz to 3.4 kHz
50 Hz to 3.4 kHz
CAS pin to GND
100 kHz to 30 MHz (See Figure E)
B(RING) to GND
B(RING) to GND
Source resistance = 2 M
All inputs except C3 and E1
Input C3
Input E1
I
I
I
OUT
OUT
DET
= 50 mVrms), Active Normal State
Test Conditions (See Note 1)
= 0.8 mA
= –0.1 mA
=
375
-------- -
R
D
Am7945 Data Sheet
–0.5
–0.4
Min
–12
–50
–75
–75
–75
2.0
2.0
2.4
30
28
28
85
–0.05
0.77
0.18
0.45
Typ
170
1.7
4.9
2.2
6.3
0.7
2.0
2.1
1.9
4.2
5.0
40
35
50
0
9
Max
10.0
255
+12
+50
200
2.5
7.5
3.0
8.5
2.0
3.5
2.0
5.0
1.0
4.7
1.5
5.7
1.0
0.8
0.4
40
45
mVrms
Unit
mA
mA
mV
mA
dB
k
k
µA
µA
%
V
V
Note
5
4
6