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參數(shù)資料
| 型號(hào)： | L9313 |
| 英文描述： | Line Interface and Line Access Circuit Full-Feature SLIC and Ringing for TR-57 Applications |
| 中文描述： | 線路接口和線路接入電路全功能SLIC和敲響訓(xùn)練班- 57應(yīng)用 |
| 文件頁(yè)數(shù)： | 4/40頁(yè) |
| 文件大小： | 746K |
| 代理商： | L9313 |
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Data Sheet
September 2001
Full-Feature SLIC and Ringing Relay for TR-57 Applications
L9313 Line Interface and Line Access Circuit
4
Agere Systems Inc.
Features
I
SLIC and solid-state ring relay integrated into a sin-
gle package
I
5 V and battery operation
I
User-defined power control options:
— Automatic battery switch
— Power control resistor
— Package thermal capabilities
I
Minimal external components required
I
Operating states:
— Forward active
— Reverse active (controlled rate of reversal)
— Scan
— Ground start (tip open)
— All-off or disconnect
— Ring
I
Ultralow power:
— Scan, 15 mW
— Active states, on-hook, 75 mW
— Ring mode, on-hook, 90 mW
— Disconnect, 10 mW
I
Adjustable overhead voltage:
— Overhead adequate for 3.14 dB into
900
overload
— Controlled rate of overhead adjustment
I
Latched parallel input data interface with reset
I
Adjustable current limiter:
— 10 mA to 45 mA programming range
I
Adjustable loop closure detector with hysteresis:
— 4 mA detect, 2.5 mA no detect minimum, upper
limit of 15 mA detect
— Hysteresis, typical 20% of programmed on-hook
to off-hook threshold
I
Ring trip detector:
— Single-pole filtering
I
Thermal shutdown protection with hysteresis
I
Line break switch will foldover into a low-current
state under high-voltage fault conditions
I
Battery out-of-range monitor circuit:
— All-off upon loss of battery (low battery condition)
— All-off upon high battery (fault condition)
I
Longitudinal balance:
— TR-57 balance
I
Ground start:
— Tip open state
— Ring ground detector
I
RFI/EMC-CISP-22
I
Integrated 2 Form C ring relay:
— Low impulse noise
— Current-limited switches
— Break-before-make and make-before-break
switching
I
Meets
Telcordia Technologies
GR1089 require-
ments with external protection device
I
44-pin, surface-mount plastic package (PLCC)
Description
The L9313 electronic line interface and line access cir-
cuit (LILAC) provides all the functions that are neces-
sary to interface a codec to the tip and ring of a
subscriber loop, integrating the battery feed and ringing
access relay in one low-power, low-cost package. The
physical construction of the device is two chips. The
first chip is manufactured in Agere 90 V complemen-
tary bipolar integrated circuit (CBIC-S) technology. This
chip contains the SLIC functionality:
I
ac transmission path
I
dc feedback and functions
I
Active dc current limit
I
Active mode loop supervision
I
Thermal shutdown
The second chip is manufactured in Agere dielectrically
isolated 320 V bipolar CMOS diffused metal oxide
semiconductor (BCDMOS III) technology. This chip
contains the following:
I
Ring access relay
I
Scan clamp circuitry
I
Logic control
I
Ring trip
I
Thermal shutdown
I
Battery monitor circuit
The LILAC family requires a +5 V and battery supply to
operate. No
–
5 V supply is required. A battery switch is
included that automatically, based on subscriber loop
length, will apply either the primary higher-voltage bat-
tery or an optional lower-voltage auxiliary battery. Use
of this feature will minimize off-hook power dissipation.
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