- 您現在的位置：買賣IC網 > PDF目錄367493 > L8560 Low-Power SLIC with Ringing PDF資料下載
參數資料
| 型號： | L8560 |
| 英文描述： | Low-Power SLIC with Ringing |
| 中文描述： | 低功耗振鈴用戶接口 |
| 文件頁數： | 30/46頁 |
| 文件大小： | 842K |
| 代理商： | L8560 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁當前第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁
Data Sheet
April 2000
L8560 Low-Power SLIC with Ringing
30
Lucent Technologies Inc.
Applications
(continued)
Power Ringing
(continued)
At the trip point, the internal current repeater will force I
RTSP
to be equal to I
RTSN
and V
RTSP
will be equal to V
RTSN
,
which is –8.2 V. Thus, at the trip point:
Thus:
Solving for V
DCOUT
, the voltage at DCOUT at the ring trip point is given by:
The loop current at ring trip is given by:
I
LOOP(TRIP)
= (V
DCOUT
)/(
β
DCOUT
)
For the L8560, the gain (
β
) at pin DCOUT is 41.67 V/A.
Capacitors C
2
and C
4
, along with resistors R
2
and R
4
, respectively, form low-pass filters to filter the ac voltage seen
at DCOUT before it is applied to the ring trip comparator input. The lower the pole of the filter, the less the ripple,
but also the slower the state transition at NSTAT. Poles in the neighborhood of 2.5 Hz—3 Hz are suggested, as
given by:
f
LP
=
f
LP
=
In the reference designs discussed in the next section, the ring trip threshold is set for 50 mA with:
R
1
= 210 k
R
2
= 124 k
C
2
= 0.1
μ
F
R
3
= 562 k
R
4
= 351 k
C
4
= 0.1
μ
F
Except for L8560CAU, the internal voltage for L8560CAU is –5.7 V. 133 k
should be used for R
1
.
I
RTSN
---------------------------------------------------------------------
R
--------+
V
DCOUT
8.2 V
–
(
)
–
R
1
+
R
3
------------------
R
2
15 k
+
+
=
I
RTSN
I
RTSP
0
8.2
–
(
R
4
)
–
=
=
3
+
1
R
3
R
1
+
3
---R
R
1
-------R
V
DCOUT
8.2 V
+
R
3
---R
R
2
15 k
+
+
R
4
8.2 V
=
V
DCOUT
8.2 R
3
R
1
+
)
1
+
R
1
R
4
R
3
R
4
-------------R
2
R
3
R
4
----R
R
3
R
4
15 k
R
3
--1
–
+
+
=
(
TRIP
)
2
π
R
2
C
2
2
π
R
4
C
4
-----------------------
-----------------------
相關PDF資料 |
PDF描述 |
|---|---|
| L8567 | SLIC for Peoples Republic of China Applications |
| L8567-32PLCC | Telecommunication IC |
| L8567-44PLCC | Telecommunication IC |
| L8574D | CAP 15PF 50V 5% C0G SMD-0402 TR-7-PA SN100 |
| L8575 | Dual-Resistive,Low-Cost Subscriber Line Interface Circuit(SLIC) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L8560AAU | 制造商:Alcatel-Lucent 功能描述: 制造商:LUCENT 功能描述: |
| L8561 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:The UTC L8561 is a Power Factor Corrector, which can work in wide input voltage range applications (from 85V ~ 265V) with an excellent THD. |
| L8561_11 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:POWER FACTOR CORRECTOR |
| L8561G-D08-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:POWER FACTOR CORRECTOR |
| L8561G-S08-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:POWER FACTOR CORRECTOR |
發布緊急采購，3分鐘左右您將得到回復。