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UPD9903 Datasheet(PDF) 18 Page - NEC

Part # UPD9903
Description  UPD9903 ANALOG SUBSCRIBER LINE LSI DIGITAL CODEC
PDF  28 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD9903 Datasheet(HTML) 18 Page - NEC

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µPD9903
18
ParameterNote
Symbol
Conditions
MIN.
TYP.
MAX.
Units
Loop detection operating
RON1
Includes termination
200
Ω feed
2500
Ω
resistance (during normal
resistance
400
Ω feed
2100
transmission)
Loop detection non-operating
200
Ω feed
3900
resistance (during normal
400
Ω feed
3500
transmission)
Loop detection operating
RON2
Includes termination
200
Ω feed
1900
Ω
resistance (during on hook
resistance
400
Ω feed
1500
transmission)
Loop detection non-operating
200
Ω feed
2840
resistance (during on hook
400
Ω feed
2440
transmission)
Loop release non-operating
RON3
Includes termination
200
Ω feed
2960
Ω
resistance
resistance
400
Ω feed
2560
Loop release operating
200
Ω feed
4540
resistance
400
Ω feed
4140
Ground detection 1 (C/O)
RON4
Includes termination resistance
5.2
k
Ω
operating resistance
Ground detection 1 (C/O)
20
non-operating resistance
Ground-fault/power line
RON6
Includes termination
ILMAX = 45/76 mA
340
Ω
contact detection
resistance
operating resistance
Off-hook state
ILMAX = 35 mA
480
Ground-fault/power line
Includes termination
ILMAX = 45/76 mA
870
Ω
contact detection non-
resistance
ILMAX = 35 mA
1130
operating resistance
Ground-fault/power line
RON7
Includes termination resistance
1.4
k
Ω
contact release non-
operating resistance
Ground-fault/power line
10
contact release operating
resistance
Note
The above values are resistance-converted values.



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