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AM7945

AMD
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 PDF File AM7945 PDF File

AM7945
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 Ground-Key Detector Signal Transmission Off-Hook Detector Power-Feed Controller Ring-Trip Detector VCC VEE AGND/DGND RINGOUT C1 C2 C3 E0 E1 DET RSN VTX DA DB VBAT BGND m o .
c U 4 t e e h S a at .
D w w w RD RDC CAS Publication# 18408 Rev: D Amendment: /0 Issue Date: October 1999 ORDERING INFORMATION...


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