le79r79 Zarlink Semiconductor, le79r79 Datasheet - Page 10

• Manufacturer Part Number: le79r79
• Description: Ringing Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

Line Characteristics
Power Supply Rejection Ratio
(V
Power Dissipation
RIPPLE
= 100 mVrms), Active Normal State
I
I
I
I
I
I
I
VA, Standby, ground start signaling
V
V
V
V
V
On hook, Open Circuit state
On hook, Standby state
On hook, OHT state
On hook, Active state
Off hook, Standby state
Off hook, OHT state
Off hook, Active state
L
L
L
L
L
A
B
AB
CC
NEG
BAT1
BAT2
, Loop-current accuracy
, Long Loops, Active state
, Accuracy, Standby state
LIM
, Loop current, Open Circuit state
, Pin A leakage, Tip Open state
, Pin B current, Tip Open state
, Open Circuit voltage
Description
Description
Description
I
B2EN=0
R
R
I
TA = 25
−40 to +85
Active, A and B to ground
OHT, A and B to ground
R
R
B to ground
A to −48 V = 7 kΩ,
B to ground = 100 Ω
50 to 3400 Hz
50 to 3400 Hz
50 to 3400 Hz
50 to 3400 Hz
V
V
V
V
V
V
V
I
L
L
L
BAT1
BAT2
BAT1
BAT1
BAT1
BAT1
BAT2
LDC
LDC
L
L
= constant-current region
in constant-current region,
Test Conditions (See Note 1)
Test Conditions (See Note 1)
Test Conditions (See Note 1)
= 0
= 0
=
------------------------------------- -
or V
= 600 Ω, RSGL = open
= 750 Ω, RSGL = short
V
Zarlink Semiconductor Inc.
°
BAT1
R
C
BAT2
°
L
C
+
400
–
10 V
10
R
R
R
L
L
L
= 300 Ω
= 300 Ω
= 300 Ω
0.87I
0.8I
−7.5
42.8
Min
Min
Min
20
20
18
18
33
30
30
30
L
L
2000
2000
21.7
Typ
Typ
Typ
200
220
550
27
27
55
55
34
−5
50
40
50
50
48
55
I
I
L
L
1.085I
2800
2200
1.2I
Max
Max
Max
100
100
100
300
350
750
110
39
80
L
L
Unit
Unit
Unit
mW
mA
mA
µA
dB
V
Note
Note
Note
10
10
4
4
4
8
5