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參數(shù)資料
| 型號(hào)： | L9214A |
| 廠商： | Lineage Power |
| 英文描述： | Low-Cost Ringing SLIC(低價(jià)格振鈴用戶環(huán)路接口電路) |
| 中文描述： | 低成本振鈴用戶接口（低價(jià)格振鈴用戶環(huán)路接口電路） |
| 文件頁(yè)數(shù)： | 12/44頁(yè) |
| 文件大小： | 964K |
| 代理商： | L9214A |
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Preliminary Data Sheet
October 2000
Low-Cost Ringing SLIC
L9214A/G
12
Lucent Technologies Inc.
State Definitions
Forward Active (Off-Hook)
I
Pin PT is positive with respect to PR.
I
V
BAT2
is applied to tip/ring drive amplifiers for the
from V
BAT1
through a power control resistor.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
Overhead is set for undistorted transmission of
+3.17 dBm into 600
.
Reverse Active (Off-Hook)
I
Pin PR is positive with respect to PT.
I
V
BAT2
is applied to tip/ring drive amplifiers via the soft
battery switch for the majority of loop lengths. This
may also be derived from V
BAT1
through a power
control resistor.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
Overhead is set to nominal 4.0 V for undistorted
transmission of 0 dBm into 600
and may be
increased automatically for larger signal levels.
Forward Active (On-Hook)
I
Pin PT is positive with respect to PR.
I
V
BAT1
is applied to tip/ring drive amplifiers. The tip to
ring on-hook differential voltage will be between
–42.5 V and –56.5 V with a primary battery of –65 V.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
On-hook transmission is enabled.
I
Overhead is set to nominal 17.0 V for undistorted
transmission of 0 dBm into 600
.
Reverse Active (On-Hook)
I
Pin PR is positive with respect to PT.
I
V
BAT1
is applied to tip/ring drive amplifiers. The tip to
ring on-hook differential voltage will be between
–42.5 V and –56.5 V with a primary battery of –65 V.
I
Loop closure and common-mode detect are active.
I
Ring trip detector is turned off to conserve power.
I
On-hook transmission is enabled.
I
Overhead is set to nominal 17.0 V for undistorted
transmission of 0 dBm into 600
.
Scan
I
Except for loop closure, all circuits (including ring trip
and common-mode detector) are powered down.
I
On-hook transmission is disabled.
I
Pin PT is positive with respect to PR, and V
BAT1
is
applied to tip/ring.
I
The tip to ring on-hook differential voltage will be
between –42.5 V and –56.5 V with a –65 V primary
battery.
Disconnect
I
The tip/ring amplifiers and all supervision are turned
off.
I
The SLIC goes into a high-impedance state.
I
NSTAT is forced high (on-hook).
Ring
I
Power ring signal is applied to tip and ring.
I
Software-selectable slew rate, fast or slow.
I
Ring trip supervision and common-mode current
supervision are active; loop closure is inactive.
I
Overhead voltage is reduced to typically 2.5 V and
current limit set at I
PROG
is disabled.
I
Current is limited by saturation current of the amplifi-
ers themselves, typically 72 mA peak at 125 °C.
Thermal Shutdown
I
Not controlled via truth table inputs.
I
This mode is caused by excessive heating of the
device, such as may be encountered in an extended
power-cross situation.
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| L9216A | Short-Loop Ringing SLIC with Ground Start(接地起動(dòng)的短環(huán)路振鈴用戶接口) |
| L9216G | Short-Loop Ringing SLIC with Ground Start(接地起動(dòng)的短環(huán)路振鈴用戶接口) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L9215A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Short-Loop Sine Wave Ringing SLIC |
| L9216A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Short-Loop Ringing SLIC with Ground Start |
| L9217A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface with Reverse Battery and PPM |
| L9218A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface |
| L9219A | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Cost Line Interface with Reverse Battery and Dual Current Limit |
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