- 您現在的位置：買賣IC網 > PDF目錄367613 > LUCL8560FAU-D Low-Power SLIC with Ringing PDF資料下載
參數資料
| 型號： | LUCL8560FAU-D |
| 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： | 39/46頁 |
| 文件大?。?/td> | 842K |
| 代理商： | LUCL8560FAU-D |
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頁當前第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁
Lucent Technologies Inc.
39
Data Sheet
April 2000
L8560 Low-Power SLIC with Ringing
Applications
(continued)
Design Examples
In the preceding examples, use of a first-generation
codec is shown. The equations for second- and third-
generation codecs are simply subsets of these. There
are two examples below. The first shows the simplest
circuit, which uses a minimum number of discrete com-
ponents to synthesize a real termination impedance.
The second example shows the use of the uncommit-
ted op amp to synthesize a complex termination. The
design has been automated in a DOS-based program,
available on request.
Example 1, Real Termination
The following design equations refer to the circuit in
Figure 37. Use these to synthesize real termination
impedance.
Termination impedance:
z
T
=
Receive gain:
Transmit gain:
Hybrid balance:
h
bal
= 20log
h
bal
= 20log
To optimize the hybrid balance, the sum of the currents
at the VFX input of the codec op amp should be set to
0. The expression for ZHB becomes:
Example 2, Complex Termination
For complex termination, the spare op amp may be
used (see Figure 38).
= 2R
P
+ k(Z
T5
)
g
tx
=
The hybrid balance equation is the same as in Exam-
ple 1.
Example 3, Complex Termination Without Spare Op
Amp
The gain shaping necessary for a complex termination
impedance may be done without using the spare op
amp by shaping across the Ax amplifier at nodes TG
and VTX. This is a recommended approach.
I
T/R
–
------------
z
T
2R
P
R
GP
1
--------
R
RCV
-----------
+
+
----------------------------------
+
=
g
rcv
V
FR
-----------
=
g
rcv
1
R
T3
-----------
R
GP
-----------
+
+
1
Z
T/R
--------
+
------------------------------------------------------------------
=
g
tx
V
T/R
----------
=
g
tx
X
R
T6
--------
Z
T/R
--------
×
=
R
HB1
--------------
g
tx
–
g
rcv
×
V
FR
--------------
R
HB1
k
(
)
×
g
tx
g
rcv
-------------------
=
z
T
2R
P
R
GN
1
--------
R
RCV
-----------
+
+
-----------------------------------
T5
R
T4
Z
(
)
+
=
g
rcv
1
RCV
R
T3
R
RCV
R
GN
R
+
+
1
T
Z
T/R
-z
+
-------------------------------------8
=
R
T6
---------
Z
T/R
----------
×
R
T4
---------
×
1
Z
T5
-------------
R
G
N
||
R
RCV
R
T3
+
---------------------------------------------------
+
+
相關PDF資料 |
PDF描述 |
|---|---|
| LUCL8560AAU-D | GT 5C 2#0 3#12 SKT RECP WALL |
| LUCL8560AAU-DT | GT 3C 3#0 SKT RECP WALL RM |
| LUCL8560AP-D | Top Entry Connector Hood; Enclosure Material:Aluminum Alloy; For Use With:C146 Rectangular Circular Connectors; Thread Size:PG 21; Connecting Termination:Screw; No. of Contacts:16; Operating Voltage:400V; Series:C-146 RoHS Compliant: Yes |
| LUCL8560AP-DT | Side Entry Connector Hood; Enclosure Material:Aluminum Alloy; For Use With:C146 Rectangular Circular Connectors; Thread Size:PG 21; Connecting Termination:Screw; No. of Contacts:24; Operating Voltage:400V; Series:C-146 RoHS Compliant: Yes |
| LUCL8560AU-D | Low-Power SLIC with Ringing |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LUCL8560FAU-DT | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Power SLIC with Ringing |
| LUCL8560GP-D | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Power SLIC with Ringing |
| LUCL8560GP-DT | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Power SLIC with Ringing |
| LUCL8567AAU-D | 制造商:AGERE 制造商全稱:AGERE 功能描述:SLIC for Peoples Republic of China Applications |
| LUCL8567AAU-DT | 制造商:AGERE 制造商全稱:AGERE 功能描述:SLIC for Peoples Republic of China Applications |
發(fā)布緊急采購，3分鐘左右您將得到回復。