參數(shù)資料
型號： L9310
英文描述： Line Interface and Line Access Circuit Full-Feature SLIC,Ringing Relay,and Test Access Device
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，測試接入設備
文件頁數(shù)： 43/60頁
文件大?。?/td> 1053K
代理商： L9310
Data Sheet
July 2001
Full-Feature SLIC, Ringing Relay, and Test Access Device
L9310 Line Interface and Line Access Circuit
Agere Systems Inc.
43
Special Functions
(continued)
Line Test
(continued)
All measurements that appear at the TESTLEV output
are referenced to the internal V
REF
voltage of the
device. For that reason, there is a test mode in which
V
REF
itself will appear at the TESTLEV output.
When making a voltage measurement, first measure
V
REF
and subtract V
REF
from V
TESTLEV
.
When making a current measurement, open the line
break switches and measure V
TESTLEV
. This value is
then subtracted from the V
TESTLEV
that is seen during
the actual measurement. Note that due to internal bias-
ing of the line break switches, the value seen at
V
TESTLEV
with the line break switches open will be less
than the value seen with the line break switches closed
under on-hook (open-loop) conditions.
TESTSIG should be externally connected to the
device’s V
REF
if it is not used during a test condition.
This may be done by a high-impedance pull-up resis-
tor. Additionally, TESTSIG should be ac coupled to the
test signal generator.
Table 21 shows design equations to measure the vari-
ous line voltages and currents.
Table 21. TESTLEV Output Options
Test Mode
Test Off
V
REF
Relationship
Comments
High Impedance
V
TESTLEV
=
V
REF
+ V
OFFSET
—
Unity follower on V
REF
.
This is the voltage measurement
calibration state, use the V
REF
state in the secondary
control state table.
Difference amp.
Tip-to-Ring Voltage
(V
TIP
– V
RING
) = 75 (1 – 0.0075
|V
TL
|) x V
TL
V
TL
= V
TESTLEV
– (V
REF
+ V
OFFSET
)
V
TIP
= –75 (1 – 0.0075 |V
TL
|) x
V
TL
+ V
REF
+ V
OFFSET
V
TL
= V
TESTLEV
– (V
REF
+ V
OFFSET
)
V
RING
= –75 (1 – 0.0075 |V
TL
|) x
V
TL
+ V
REF
+ V
OFFSET
V
TL
= V
TESTLEV
– (V
REF
+ V
OFFSET
)
V
TESTLEV
= V
ZEROCUR
Tip-to-Ground Volt-
age
Inverting amp.
Ring-to-Ground Volt-
age
Inverting amp.
VTX, Zero Current
(tip open, ring
open)
Unity follower on VTX close to V
REF
+ V
AXOFFSET
+ V
OFF-
SET
.
This is the current measurement calibration state. In
the secondary control state table, use tip amp or ring
amp for single-ended current measurement calibration.
Use tip and ring amp for differential current measure-
ment calibration. Do not use the disconnect mode for
current calibration.
Differential current.
VTX, dc Current Tip/
Ring (tip closed,
ring closed)
VTX, dc Current
Ring Ground (tip
closed, ring open)
VTX, dc Current
Ring Ground (tip
open, ring closed)
VITR, Zero Current
(tip open, ring
open)
V
TESTLEV
= 20 V/A x I
TIP-to-RING
+
V
ZEROCUR
V
TESTLEV
= 10 V/A x I
TIP-to-RING
+
V
ZEROCUR
Single-ended voltage.
V
TESTLEV
= –10 V/A x I
TIP-to-RING
+
V
ZEROCUR
Single-ended voltage.
V
TESTLEV
= V
ZAC
Unbuffered output of VITR close to V
REF
+ V
AXOFFSET
+
V
ACOFFSET
. This is the current measurement calibration
state. In the secondary control state table, use tip amp or
ring amp; for single-ended current measurement calibra-
tion, use tip and ring amp for differential current mea-
surement calibration. Do not use the disconnect mode
for current calibration.
—
VITR, ac Current (tip
closed, ring
closed)
V
TESTLEV
= 300 V/A x I
TIP-to-RING
+
V
ZAC
相關(guān)PDF資料
PDF描述
L9311 Line Interface and Line Access Circuit Full-Feature SLIC with High Longitudinal Balance, Ringing Relay,and GR-909 Test Access
L9312 Line Interface and Line Access Circuit Forward Battery SLIC and Ringing Relay for TR-57 Applications
L9313 Line Interface and Line Access Circuit Full-Feature SLIC and Ringing for TR-57 Applications
L9350 Single Peripheral Driver
L9355 Dual Peripheral Driver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L9311 制造商:AGERE 制造商全稱:AGERE 功能描述:Line Interface and Line Access Circuit Full-Feature SLIC with High Longitudinal Balance, Ringing Relay,and GR-909 Test Access
L9312 制造商:AGERE 制造商全稱:AGERE 功能描述:Line Interface and Line Access Circuit Forward Battery SLIC and Ringing Relay for TR-57 Applications
L9313 制造商:AGERE 制造商全稱:AGERE 功能描述:Line Interface and Line Access Circuit Full-Feature SLIC and Ringing for TR-57 Applications
L9324 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual Peripheral Driver
L9326 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*