am7945 Advanced Micro Devices, am7945 Datasheet - Page 12

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

DC FEED CHARACTERISTICS
12
Notes:
1. Constant-current region:
2. Anti-sat (battery tracking) turn-on:
3. Open circuit voltage:
4. Anti-sat (battery tracking) region:
3
R
Active state:
OHT state:
DC1
+ R
DC2
= R
V
V
BAT
BAT
DC
= 18.52 k
= –51.3 V
= –47.3 V
a. V
A
I
I
V
V
V
–V
L
L
AB
AB
AB
=
=
B
(V
=
=
=
--------- -
R
2
-- -
3
500
AB
DC
1.017 V
1.017 V
1.017 V
4
Am7945 Data Sheet
--------- -
R
500
) Voltage vs. Loop Current (Typical)
DC
BAT
BAT
BAT
–
–
–
1
10.7
6.3
6.3
–
I
L
R
--------- -
120
DC
2
Active state
OHT state