LUCL8576BP-D AGERE [Agere Systems], LUCL8576BP-D Datasheet - Page 11

• Manufacturer Part Number: LUCL8576BP-D
• Description: Dual Ringing SLIC
• Manufacturer: AGERE [Agere Systems]

May 2001
Electrical Characteristics
Pretrip will not occur for the circuits shown below, per GR-909, 4.5.9.
Table 5. Battery Feed
1. Assumes 2 x 30
2. The longitudinal current is independent of dc loop current.
3. Current limit I
4. Instantaneous current limit minimizes inrush current at the onset of an off-hook condition. Inrush current is only limited when in the forward
5. IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc.
6. Assumes the external protection resistors are matched to 1%.
7. This parameter is not tested during production. It is guaranteed by design and device characterization.
Agere Systems Inc.
Loop Resistance Range
Longitudinal Current Capability per Wire
Current Limit
Tip or Ring Drive Current = dc + Longitudinal + Signal Currents
Signal Current
Powerup Open Loop Voltage Level
Disconnect State:
dc Feed Resistance
Longitudinal to Metallic Balance— IEEE
Metallic to Longitudinal (Harm) Balance
slope vs. loop voltage of 6 k . To control power dissipation, it is recommended that the default current limits be utilized, i.e., R
for 24 mA nominal loop current limit.
battery state. The device will settle into a dc loop current-limit value within 400 ms after off-hook.
rather than the ac characteristics.
(3.17 dBm overload into 600
Differential Voltage (RNGNG = 0, NDISC = 1, B2 = 1,
dc Loop
Instantaneous
V
200 Hz to 4 kHz
I
PT or PR Current (V
PT or PR Resistance (V
200 Hz to 1 kHz
1 kHz to 3 kHz
LOOP
BAT
= –65 V)
= 20 mA at V
LIM
3
R
is programmed by a resistor, R
LOOP
external protection resistors. Note the useful range of the device may be determined by the ringing or supervision range
4
= 100 :
BAT
BAT
1
= –65 V
Parameter
< V
BAT
PT
TIP
TIP
< V
):
< 0 V)
PT
SWITCH CLOSES FOR LESS THAN 12 ms
(continued)
< 0 V)
PROG
5
7
2
:
Standard 455
, from pin I
Figure 4. Pretrip Circuit
PROG
10 k
6 F
6
:
to pin DC
200
OUT
|V
BAT
R
1000
Min
100
PROG
8.5
20
50
65
–1
54
48
35
—
5
+ 10|
(k )
= 3.5 x (I
RING
RING
L8576B Dual Ringing SLIC
Typ
—
15
24
60
—
—
—
—
—
60
67
62
—
LIM
– 9.2) mA. The current limit has a
Max
28
70
70
—
—
—
—
—
—
—
—
—
1
PROG
mArms
mArms
Unit
= 51.1 k
12-2572(F).d
mA
mA
mA
mA
k
dB
dB
dB
V
11