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參數(shù)資料
| 型號(hào)： | L3000S |
| 廠(chǎng)商： | 意法半導(dǎo)體 |
| 英文描述： | 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(hù)線(xiàn)接口) |
| 中文描述： | 用戶(hù)接口工具包優(yōu)化與包括第一代和第二代功放音箱（用于短波/超短波通信系統(tǒng)的用戶(hù)線(xiàn)接口應(yīng)用） |
| 文件頁(yè)數(shù)： | 8/32頁(yè) |
| 文件大?。?/td> | 298K |
| 代理商： | L3000S |
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In the same condition the power dissipation of
L3092 is typically100mW.
2) STAND-BY(SBY)MODE
In this mode the biascurrents of both L3000S and
L3092 are reduced as only some parts of the two
circuits are completely active, control interface
and current sensors among them. The current
supplied to the line is limited at 10mA, and the
slope of the DC characteristic corresponds to 2 x
RFS.
The AC characteristic in Stand-by corresponds 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-
tivethan the RING one as in ConversationMode.
When the SLIC is in Stand-by mode, the power
dissipation
of
L3000S
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 typically50mW.
SBY Mode is usually selected when the tele-
phone is in on-hook. It allows a proper off-hook
detection also in presenceof high common mode
line current or with telephone set sinking few mil-
liAmpereof linecurrent in on hookcondition.
does
not
exceed
3) POWERDOWN (PD) MODE
In this mode the L3000S present a high imped-
ance (> 1 Mohm) to the line and cannot feed any
line current.
The L3092 forces L3000S 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 andthe power
dissipationof L3092is typically 50mW.
The PD mode is normally used in emergency
condition but can be used also in normalon-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 hook detectionin Powerdown mode.
The resistor RR and RT feed the linecurrent. The
voltage at the terminal of the resistor RS con-
nectedto RING wire is normally – 48V.
When there is a loop resistor between TIP and
Figure 1:
DC Characteristicsin Conversation
Mode
Figure 2:
Line Currentversus Loop Resistance -
RFS = 200
; Limiting Currents:
25/40/60mA
Figure3:
DCCharacteristicsin Stand-byMode
L3000S - L3092
8/32
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L30030G-1 | Class G Fuse Blocks |
| L30030G-2 | Class G Fuse Blocks |
| L30030G-3 | CAP CER 1.5UF 50V Y5V 1812 |
| L3092 | Subscriber Line Interface(用于短波/超短波通信系統(tǒng)的用戶(hù)線(xiàn)接口) |
| L3100B | Overvoltage and Overcurrent Protection for Telecom Line(用于電信線(xiàn)路的過(guò)流和過(guò)壓保護(hù)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L3000SX | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
| L3000SX-77 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
| L3000SX-VC | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Subscriber Line Interface Circuit |
| L3000SX-VM | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:SUBSCRIBER LINE INTERFACE KIT |
| L3000TN | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Telecommunication IC |
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