- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384587 > L9215G (Lineage Power) Short-Loop Sine Wave Ringing SLIC(短環(huán)路正弦波振鈴用戶接口（SLIC）) PDF資料下載
參數(shù)資料
| 型號： | L9215G |
| 廠商： | Lineage Power |
| 英文描述： | Short-Loop Sine Wave Ringing SLIC(短環(huán)路正弦波振鈴用戶接口（SLIC）) |
| 中文描述： | 短回路正弦波振鈴用戶接口（短環(huán)路正弦波振鈴用戶接口電路（SLIC）） |
| 文件頁數(shù)： | 5/46頁 |
| 文件大?。?/td> | 1165K |
| 代理商： | L9215G |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁
Advance Data Sheet
October 2000
Short-Loop Sine Wave Ringing SLIC
L9215A/G
Lucent Technologies Inc.
5
Description
(continued)
Forward and reverse battery active modes are used for
off-hook conditions. Since this device is designed for
short-loop applications, the lower-voltage V
BAT2
is
applied during the forward and reverse active states
.
Battery reversal is quiet, without breaking the ac path.
Rate of battery reversal may be ramped to control
switching time.
The magnitude of the overhead voltage in the forward
and reverse active modes has a typical default value of
6.0 V, allowing for an undistorted signal of 0 dBm into
600
. This overhead can be increased to accommo-
date higher signal levels and/or PPM. The ring trip
detector is turned off during active modes to conserve
power.
Because on-hook transmission is not allowed in the
scan mode, an on-hook transmission mode is defined.
This mode is functionally similar to the active mode,
except the tip ring voltage is derived from the higher
V
BAT1
rather than V
BAT2
.
In the on-hook transmission modes with a primary bat-
tery whose magnitude is greater than a nominal
51 V, the magnitude of the tip to ground and ring to
ground voltage is clamped at less than 56.5 V.
To minimize on-hook power, a low-power scan mode is
available. In this mode, all functions except off-hook
supervision are turned off to conserve power. On-hook
transmission is not allowed in the scan mode.
In the scan mode with a primary battery whose magni-
tude is greater than a nominal 51 V, the magnitude of
the tip to ground and ring to ground voltage is clamped
at less than 56.5 V.
A forward disconnect mode is provided, where all cir-
cuits are turned off and power is denied to the loop.
The device offers a ring mode, in which a power ring
signal is provided to the tip/ring pair. During the ring
mode, a user-supplied low-voltage ring signal (ac cou-
pled) is input to the device’s RING
IN
input. This signal is
amplified to produce the power ring signal. This signal
may be a sine wave or filtered square wave to produce
a sine wave on trapezoidal output. Ring trip detector
and common-mode current detector are active during
the ring mode.
With maximum V
BAT1
and a sine wave input, the L9215
has sufficient power to ring a 5 REN (1386
+ 40
μ
F)
ringing load into 100
of physical wiring resistance.
With maximum V
BAT1
, and a sine wave input, the L9215
has sufficient power to ring a 3 REN (2333
+ 24
μ
F)
ringing load into 250
of physical wiring resistance.
Loop ranges may be expanded by applying a lower
crest factor trapezoidal input wave form.
This feature eliminates the need for a separate external
ring relay, associated external circuitry, and a bulk ring-
ing generator. See the Applications section of this data
sheet for more information.
PPM is injected at the PPM
IN
pin (ac coupled). This is a
high-impedance input that controls the PPM differential
voltage on tip and ring. The PPM signal may be
present at this pin at all times; however, PPM will only
be transmitted to tip and ring during a PPM active
mode. There are forward and reverse active, and for-
ward and reverse on-hook transmission modes with
PPM active.
No PPM shaping is done by the device. It is assumed
that a shaped PPM input is presented to PPM
IN
.
The maximum allowed PPM current at the 200
ac
meter pulse load to avoid saturation of the device’s
internal AAC amplifier is 3 mArms. This signal level
is sufficient to provide a minimum 200 mVrms to the
200
PPM load under maximum specified dc loop
conditions. Above 3 mArms PPM current, external
meter pulse rejection may be required. See the appli-
cation section of this data sheet for more information if
on-hook transmission of PPM is required. Sufficient
overhead to accommodate on-hook transmission must
be programmed by the user at the OVH input.
Both the ring trip and loop closure supervision func-
tions are included. The loop closure has a fixed typical
10.5 mA on- to off-hook threshold in the active mode
and a fixed 11.5 mA on- to off-hook threshold from the
scan mode. In either case, there is a 2 mA hysteresis.
The ring trip detector requires only a single-pole filter at
the input, minimizing external components. The ring
trip threshold at a given battery voltage is fixed. Typical
ring trip threshold is 42.5 mA for a –70 V V
BAT1
and
36 mA for –48 V V
BAT1
.
相關PDF資料 |
PDF描述 |
|---|---|
| L9215A | Short-Loop Sine Wave Ringing SLIC(短環(huán)路正弦波振鈴用戶接口（SLIC）) |
| L9216A | Short-Loop Ringing SLIC with Ground Start(接地起動的短環(huán)路振鈴用戶接口) |
| L9216G | Short-Loop Ringing SLIC with Ground Start(接地起動的短環(huán)路振鈴用戶接口) |
| L9219A | Low-Cost Line Interface with Reverse Battery and Dual Current Limit(帶反相電池和雙電流限制的低價格線接口) |
| L9219G | Low-Cost Line Interface with Reverse Battery and Dual Current Limit(帶反相電池和雙電流限制的低價格線接口) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| L9222 | 功能描述:功率驅動器IC Quad Inv Tran Switch RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復。