le79489 Zarlink Semiconductor, le79489 Datasheet - Page 7

• Manufacturer Part Number: le79489
• Description: Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

ELECTRICAL CHARACTERISTICS (CONTINUED)
Line Characteristics
I
I
I
I
I
V
V
BAT SW hysteresis
BAT SW threshold
(from V
I
I
V
Power Supply Rejection Ratio (Vripple = 100 mVrms), Active Normal State
V
V
V
V
(Anti-sat region)
Effective internal resistance
Device Power Dissipation
Open loop, Disconnect state
Open loop, Standby state
Open loop, Active state
Open loop, Active state
Off hook, Standby state
Off hook, Active state
Supply Currents, Battery
I
Open Loop V
I
Open Loop V
L
L
L
L
L
A
B
CC
BAT1
apparent
AB
A
CC
BAT1
BAT2
BAT1
, Active
, Active
, Accuracy, Standby state
, Loop current, Disconnect state
LIM
, Leakage, Tip Open state
, Current, Tip Open state
, Active
,
, Open loop voltage
,
, Open loop, R
BAT1
Description
to V
CC
BAT1
supply current
BAT2
supply current
LAC
Short loop
Medium loop
Long loop
Short loop
Long loop
)
= 600 Ω
R
R
R
R
R
Current limited region
R
Active, A and B to GND
Active, Normal
Reverse Polarity
OVH = 0
R
B to GND
RA to BAT1 = 7 kΩ, RB to
GND = 100 Ω
50 Hz to 3.4 kHz
50 Hz to 3.4 kHz
50 Hz to 3.4 kHz
50 Hz
100 Hz
200 Hz
500 Hz to 3.4 kHz
CAS pin to GND
OVH = 1
OVH = 0
R
R
R
Disconnect state
Standby state
Active state
Disconnect state
Standby state
Active state
I
L
LDC
LDC
LDC
LDC
LDC
L
L
L
L
L
= 0
= 0
= 600 Ω
= 250 Ω
= 700 Ω
=
= 2 kΩ
= 250 Ω
= 700 Ω
= 2 kΩ
= 250 Ω
---------------------------------- -
V
Test Conditions (See Note 1)
BAT1
R
L
+
Zarlink Semiconductor Inc.
400
–
3 V
7
T
A
= 25
°
C
Min
0.7 I
44.2
33.4
17.2
44.2
16.0
40.3
39.8
–7.5
18
37
18
30
28
35
15
20
28
85
8
L
1150
BAT2
Typ
+ 8.5
1000
48.6
37.1
19.2
48.6
18.0
41.7
41.7
170
150
550
880
800
2.5
3.0
6.3
0.5
0.7
2.8
30
95
52
39
30
–5
45
50
50
14
22
29
40
35
50
I
L
Max
1.3 I
1300
1200
1000
54.0
40.8
21.2
54.0
20.0
100
135
100
255
250
620
4.5
4.5
9.5
1.0
1.5
4.8
56
70
85
L
Unit
mW
mA
mA
mV
mA
mA
µA
µA
kΩ
dB
V
V
V
Note
4
4
3
4
4
4
9