am79r251 Advanced Micro Devices, am79r251 Datasheet - Page 14

• Manufacturer Part Number: am79r251
• Description: Intelligent Subscriber Line Interface Circuit Islic
• Manufacturer: Advanced Micro Devices

ELECTRICAL CHARACTERISTICS
Power Dissipation
14
Loop resistance = 0 to
BATL = -40 V, BATH = –68 V, BATP = +52 V, VCC = +5 V. For power dissipation measurements,
DC-feed conditions are as follows:
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Power Dissipation
Normal Polarity
Power Supply Currents
ILA (Active mode current limit) = 25 mA (IRSN = 50 A)
RFD (Feed resistance) = 500
VAS (Anti-sat activate voltage) = 10 V
VAPP (Apparent Battery Voltage) = 48 V
RTMG1 = RTMG2 (Thermal management resistors) = 1 k
Description
unless otherwise noted (not including fuse resistors), 2 x 50
On-Hook Disconnect
On-Hook Standby
On-Hook Transmission
Fixed Longitudinal Voltage
On-Hook Active High Battery ISLIC
Off-Hook Active Low Battery
RL = 294
On-Hook Disconnect
On-Hook Standby
On-Hook Transmission
Fixed Longitudinal Voltage
On-Hook Active High Battery
Off-Hook Active Low Battery
RL = 294
Am79R251
Test Conditions
ISLIC
ISLIC
TMG
VBH
VCC
VBH
VCC
VBH
VCC
VBH
VCC
VBH
VCC
VBL
VBL
VBL
VBL
VBL
Min
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Typ
Max
fuse resistors,
Unit
mW
mA