- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367614 > LUCL9217AAR-DT Low-Cost Line Interface with Reverse Battery and PPM PDF資料下載
參數(shù)資料
| 型號： | LUCL9217AAR-DT |
| 英文描述： | Low-Cost Line Interface with Reverse Battery and PPM |
| 中文描述： | 低成本線接口，具有反向電池和PPM |
| 文件頁數(shù)： | 21/30頁 |
| 文件大?。?/td> | 414K |
| 代理商： | LUCL9217AAR-DT |
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頁當前第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頁第30頁
Agere Systems Inc.
21
Data Sheet
November 2001
with Reverse Battery and PPM
L9217A/G Low-Cost Line Interface
Applications
(continued)
dc Applications
(continued)
Ring Trip Detection
The ring trip circuit is a comparator that has a special input section optimized for this application. The equivalent
circuit is shown in Figure 15, along with its use in an application using unbalanced, battery-backed ringing.
Figure 15. Ring Trip Equivalent Circuit and Equivalent Application
Ring trip detection threshold is given by the following equation:
I
TH
(mA) =
Longitudinal Balance
The SLIC is graded to certain longitudinal balance specifications. The numbers are guaranteed by testing (Figure 5
and Figure 8). However, for specific applications, the longitudinal balance may also be determined by termination
impedance, protection resistance, and especially by the mismatch between protection resistors at tip and ring. This
can be illustrated by the following equation:
LB = 20 x log
where:
LB: longitudinal balance.
RP: protection resistor value in
.
ZT: magnitude of the termination impedance in
.
ε
: protection resistor mismatch in
.
: SLIC internal tip/ring sensing mismatch.
The
can be calculated using the above equation with these exceptions:
ε
=
0, ZT = 600
,
RP = 100
,
and the
longitudinal balance specification on a specific code.
Now with
available, the equation will predict the actual longitudinal balance for RP, ZT, and
ε
.
Be aware that ZT may vary with frequency for complex impedance applications.
+
–
R
TSP
R
LOOP
15 k
8.6 V
I
P
= I
N
R
TSN
3.32 M
/
3.40 M
C
RTS1
0.015
μ
F
PHONE
HOOK SWITCH
RC PHONE
V
RING
V
BAT
NSTAT
R
TSP
I
N
R
TSN
–
+
2.94 M
R
S
402
/
510
2799 (F)
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
RTSN M
[
)
+
[
R
S
×
]
0.015
368
2
×
(
ZT 2
–
×
RP
ε
×
[
]
+
)
×
------------------------------------------------------------------------------------------
相關PDF資料 |
PDF描述 |
|---|---|
| LUCL9217GAR-D | Aluminum Snap-In Capacitor; Capacitance: 10000uF; Voltage: 25V; Case Size: 25x30 mm; Packaging: Bulk |
| LUCL9217GAR-DT | Low-Cost Line Interface with Reverse Battery and PPM |
| LUCL9218AAR-D | Low-Cost Line Interface |
| LUCL9218AAR-DT | Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:3; Connector Shell Size:16; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight |
| LUCL9218GAR-D | CAT5E PATCH CABLES SNAGLESS,BLUE 50 FT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LUCL9217GAR-D | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface with Reverse Battery and PPM |
| LUCL9217GAR-DT | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface with Reverse Battery and PPM |
| LUCL9218AAR-D | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface |
| LUCL9218AAR-DT | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface |
| LUCL9218GAR-D | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface |
發(fā)布緊急采購，3分鐘左右您將得到回復。