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AM79514 Datasheet(PDF) 14 Page - Advanced Micro Devices

Part # AM79514
Description  Subscriber Line Interface Circuit
PDF  18 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79514 Datasheet(HTML) 14 Page - Advanced Micro Devices

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14
Am79514 Data Sheet
TEST CIRCUITS
VRX
RRX
B(RING)
A(TIP)
RT
R
R
VM
ZIN
ZD
VS
B(RING)
A (TIP)
RSN
AGND
VTX
RRX
RT
S2 Open, S1 Closed
L-T Long. Bal. = 20 log (VAB / VL)
L-4 Long. Bal. = 20 log (VTX / VL)
S2 Closed, S1 Open
4-L Long. Sig. Gen. = 20 log (VL / VRX)
C. Longitudinal Balance
IL2–4 = 20 log (VTX / VAB)
B(RING)
A. Two- to Four-Wire Insertion Loss
A(TIP)
A(TIP)
SLIC
SLIC
SLIC
SLIC
Note:
ZD is the desired impedance (e.g., the
characteristic impedance of the line).
RL = –20 log (2 VM / VS)
B. Four- to Two-Wire Insertion Loss and Balance Return Signal
VTX
VTX
VTX
B(RING)
RSN
RSN
RSN
RL
2
VL
RL
2
VAB
VL
RT
RRX
VAB
RL
AGND
IL4–2 = 20 log (VAB / VTX)
BRS = 20 log (VTX / VAB)
S1
C
RL
2
1
ωC
<< RL
VL
RL
2
RT
RRX
S2
VRX
D. Two-Wire Return Loss Test Circuit
AGND



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