ELECTRICAL CHARACTERISTICS (continued)
Description
Line Characteristics
I
L
, Short loops, Active or Standby
I
L
, Long loops, Active
I
L
LIM
V
AB
, Open circuit voltage
R
LDC
= 600
Ω
BAT = –47.2 V, R
LDC
= 2000
Ω
Active, A and B to ground
V
BAT
= –48 V, Active state
OHT = 0
40.5
18
45
20
95
V
BAT
+ 3.0 V
BAT
+ 1.5
V
BAT
+ 7.5 V
BAT
+ 6.0
130
V
49.5
mA
Test Conditions (See Note 1)
Min
Typ
Max
Unit
Note
Power Supply Rejection Ratio (V
RIPPLE
= 100 mVrms), Active Normal State
V
CC
V
BAT
Effective internal resistance
Power Dissipation
On hook, Active state
Off hook, Active state
Supply Currents, Battery = –48 V
I
CC
, on-hook V
CC
supply current
I
BAT
, on-hook V
BAT
supply current
RFI Rejection
RFI rejection
Receive Summing Node (RSN)
RSN DC voltage
RSN impedance
Logic Inputs (C3–C1, D1, CS)
V
IH
, Input High voltage
V
IH
, Input High voltage
V
IL
, Input Low voltage
I
IH
, Input High current
I
IL
, Input Low current
Logic Output (DET, ALM)
V
OL
, Output Low voltage
V
OH
, Output High voltage
DET pull-up resistor to V
CC
ALM pull-up resistor to V
CC
Ring-Trip Detector Input (DA, DB)
Bias current
Offset voltage
Source resistance = 2 MΩ
–500
–50
–50
0
+50
nA
mV
6
I
OUT
= 0.3 mA
I
OUT
= –0.1 mA
2.4
9.5
13
15
kΩ
20
0.40
V
–75
–400
All except C3
C3
2.0
2.5
0.8
40
µA
V
I
RSN
= 0 mA
200 Hz to 3.4 kHz
0
10
20
V
Ω
4
100 kHz to 30 MHz
(see Figure E)
1.0
mVrms
4
Active state, V
BAT
= –48 V
Active state, V
BAT
= –48 V
4.5
2.0
8.5
mA
3.4
R
TMG
= 1 kΩ
R
L
= 300
Ω,
R
TMG
= 1 kΩ
120
1150
180
mW
1350
50 Hz to 3.4 kHz
50 Hz to 3.4 kHz
CAS pin to V
BAT
30
28
85
40
dB
50
170
255
kΩ
4
5
Le7925 Data Sheet
7
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
