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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)： | 50/60頁 |
| 文件大?。?/td> | 1053K |
| 代理商： | LUCL9310AP-D |
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Data Sheet
July 2001
Full-Feature SLIC, Ringing Relay, and Test Access Device
L9310 Line Interface and Line Access Circuit
50
Agere Systems Inc.
ac Applications
(continued)
First-Generation Codec ac Interface Net-
work: Complex Termination
The following reference circuit shows the complete
SLIC schematic for interface to the Agere T7504 first-
generation codec for the German complex termination
impedance. For this example, the ac interface was
designed for a 220
+ (820
|| 115 nF) complex ter-
mination and hybrid balance with transmit gain and
receive gain set to 0 dBm. For illustration purposes,
2.2 Vrms PPM injection was assumed in this example.
This implies the overhead voltage is increased to 9.2 V
and hybrid meter pulse rejection is used. Also, this
example illustrates the device using the battery switch
with multiple battery operation and fixed overhead, cur-
rent limit, and loop closure threshold.
Complex Termination Impedance Design
Complex termination is specified in the form:
5-6396(F)
To work with this application, convert termination to the
form:
5-6398(F)
where:
R
1
′ = R
1
+ R
2
1
R
2
R
2
′ =
(R
1
+ R
2
)
C′ =
C
ac Interface Using First-Generation Codec
R
TGP
/R
TGS
/C
GS
(Z
TG
): these components give gain
shaping to get good gain flatness. These components
are a scaled version of the specified complex termina-
tion impedance.
Note that for pure (600
) resistive terminations, com-
ponents R
TGS
and C
GS
are not used. Resistor R
TGP
is
used and is still 6.34 k
.
R
X
/R
T6
: with other components set, the transmit gain
(for complex and resistive terminations) R
X
and R
T6
are
varied to give specified transmit gain.
R
T3
/R
RCV
/R
GP
: for both complex and resistive termina-
tions, the ratio of these resistors set the receive gain.
For resistive terminations, the ratio of these resistors
sets the return loss characteristic. For complex termi-
nations, the ratio of these resistors set the low-fre-
quency return loss characteristic.
C
N
/R
N1
/R
N2
: for complex terminations, these compo-
nents provide high-frequency compensation to the
return loss characteristic.
For resistive terminations, these components are not
used and RCVN is connected to ground via a resistor.
R
HB
: sets hybrid balance for all terminations.
Set Z
TG
—Gain Shaping
Z
TG
= R
TGP
|| R
TGS
+ C
GS
, which is a scaled version of
Z
T/R
(the specified termination resistance), in the
R
1
′ || R
2
′ + C′ form.
R
TGP
must be 6.34 k
to set SLIC transconductance to
300 V/A.
R
TGP
= 6.34 k
At dc, C
GS
and C′ are open.
R
TGP
= M x R
1
′
where M is the scale factor.
M =
It can be shown:
R
TGS
= M x R
2
′
and
C
TGS
=
R
2
C
R
1
R
1
′
C′
R
2
′
-------
+
R
1
R
2
---------------------
2
R
1
′
--------------
′
M
------
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