Part Number
|
AM7945 |
Manufacturer
|
AMD |
Description
|
Subscriber Line Interface |
Published
|
Feb 10, 2006 |
Detailed Description
|
m o .c Am7945 t4U Subscriber Line eInterface Circuit e h S DISTINCTIVE a CHARACTERISTICS t a D . w w w
s Programmable co...
|
Datasheet
|
AM7945
|
Overview
m o .
c Am7945 t4U Subscriber Line eInterface Circuit e h S DISTINCTIVE a CHARACTERISTICS t a D .
w w w
s Programmable constant-current feed s Current gain = 200 s Programmable loop-detect threshold s Low power Standby state s Ground-key detector s Tip Open state for ground-start lines s –19 V to –56.
5 V battery operation
s On-chip Thermal Management (TMG) feature s Two-wire impedance set by single external impedance s On-hook transmission s On-chip ring relay driver and relay snubber circuit s Ideal for low cost PABX and key telephone systems
BLOCK DIAGRAM
A(TIP)
HPA
HPB
B(RING)
m o .
c U 4 t e e h S a t a .
D w w w
TMG Ring Relay Driver Input Decoder and Control Two-Wire Interface Grou...
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