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參數(shù)資料
| 型號： | L3000NSO |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | SLIC KIT OPTIMIZED FOR APPLICATIONS WITH BOTH FIRST AND SECOND GENERATION COMBOS |
| 中文描述： | 用戶接口盒優(yōu)化用于包括第一代和第二代組合技的應(yīng)用 |
| 文件頁數(shù)： | 8/32頁 |
| 文件大?。?/td> | 412K |
| 代理商： | L3000NSO |
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In the same condition the power dissipation of
L3092 is typically 100mW.
2) STAND-BY (SBY) MODE
In this mode the bias currents of both L3000N
and L3092 are reduced as only some parts of the
two circuits are completely active, control inter-
face and current sensors among them. The cur-
rent supplied to the line is limited at 10mA, and
the slope of the DC characteristiccorresponds to
2 x RFS.
The AC characteristic in Stand-bycorresponds to
a lowimpedance (2 x RP)
In Stand-by mode the line voltage polarity is just
in direct condition, that is the TIP wire more posi-
tive than the RING one asin ConversationMode.
When the SLIC is in Stand-by mode, the power
dissipation
of
L3000N
120mW
from – 48V) eventually increased of a
certain amount if some current is flowing into the
line.
The power dissipation of the L3092 in the same
conditionis typically 50mW.
SBY Mode is usually selected when the tele-
phone is in on-hook. It allows a proper off-hook
detectionalso in presence of high commonmode
line current or with telephone set sinking few mil-
liAmpere of line current in on hook condition.
does
not
exceed
3) POWER DOWN (PD)MODE
In this mode the L3000N present a high imped-
ance (> 1 Mohm) to the line and cannot feed any
linecurrent.
The L3092 forces L3000N in PowerDown discon-
necting its bias Resistor, RH, from the ground
throughthe output pin PD0.
The power dissipation from the battery volt-
age (– VB) is almost equal to zero and the power
dissipationof L3092 is typically 50mW.
The PD mode is normally used in emergency
conditionbut can be used also in normal on-hook
condition.
In this case the off-hook detection is performed
using the line sense comparator integrated in the
L3092.
The fig. 4 shows the functional circuit to perform
the off hookdetectionin Powerdown mode.
The resistor RR and RTfeed the line current.The
voltage at the terminal of the resistor RS con-
nected to RING wire is normally– 48V.
When there is a loop resistor between TIP and
Figure1:
DC Characteristicsin Conversation
Mode
Figure2:
Line Current versus Loop Resistance -
RFS = 200
; LimitingCurrents:
25/40/60mA
Figure 3:
DCCharacteristicsin Stand-byMode
L3000N - L3092
8/32
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L3000N | Subscriber Line Interface(用戶線路接口設(shè)備) |
| L3030 | Subscriber Line Interface(用戶線路接口設(shè)備) |
| L3000S | SLIC Kit Optimized for Applications with Both First and Second Generation Combos(用于短波/超短波通信系統(tǒng)的用戶線接口) |
| L30030G-1 | Class G Fuse Blocks |
| L30030G-2 | Class G Fuse Blocks |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L3000S | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
| L3000SX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
| L3000SX-77 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
| L3000SX-VC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
| L3000SX-VM | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
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