參數(shù)資料
型號： LUCL9310AP-D
元件分類： 圓形連接器
英文描述： Top Entry Connector Hood; Enclosure Material:Aluminum Alloy; For Use With:C146 Rectangular Circular Connectors; Thread Size:PG 21; Connecting Termination:Screw; Gender:Male; No. of Contacts:16; Operating Voltage:400V; Series:C-146 RoHS Compliant: Yes
中文描述： 線路接口和線路接入電路全功能用戶接口，振鈴繼電器，測試接入設(shè)備
文件頁數(shù)： 53/60頁
文件大?。?/td> 1053K
代理商： LUCL9310AP-D
Data Sheet
July 2001
Full-Feature SLIC, Ringing Relay, and Test Access Device
L9310 Line Interface and Line Access Circuit
Agere Systems Inc.
53
ac Applications
(continued)
First-Generation Codec ac Interface Network: Complex Termination
(continued)
Blocking Capacitors
5-6401.K (F)
Figure 18. ac Interface Using First-Generation Codec (Including Blocking Capacitors) for Complex
Termination Impedance
0.1
μ
F
R
TGS
V
TX
R
TGP
= 6.34 k
T
XI
V
ITR
R
T6
R
x
R
T3
R
HB
CODEC
OUTPUT
DRIVE
AMP
CODEC
OP AMP
–
+
15
C
N
R
N1
R
N2
R
GP
R
RCV
RCVN
RCVP
–I
T/R
324.5
C
GS
C
B1
2.5 V
C
B2
V
REF
V
REF
If a 5 V only codec such as the Agere T7504 is used,
dc blocking capacitors must be added as shown in Fig-
ure 18. This is because the codec is referenced to
2.5 V and the SLIC to ground—with the ac coupling, a
dc bias at T/R is eliminated and power associated with
this bias is not consumed.
Typically, values of 0.1 μF to 0.47 μF capacitors are
used for dc blocking. The addition of blocking capaci-
tors will cause a shift in the return loss and hybrid bal-
ance frequency response toward higher frequencies,
degrading the lower-frequency response. The lower
the value of the blocking capacitor, the more pro-
nounced the effect is, but the cost of the capacitor is
lower. It may be necessary to scale resistor values
higher to compensate for the low-frequency response.
This effect is best evaluated via simulation. A
PSPICE
model for the L9310 is available.
Design equation calculations seldom yield standard
component values. Conversion from the calculated
value to standard value may have an effect on the ac
parameters. This effect should be evaluated and opti-
mized via simulation.
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