音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

L9219A Datasheet

  • L9219A

  • Low-Cost Line Interface with Reverse Battery and Dual Curren...

  • 381.60KB

  • 30頁

  • AGERE

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

Data Sheet
November 2001
L9219A/G Low-Cost Line Interface
with Reverse Battery and Dual Current Limit
Features
s
Description
This general-purpose electronic subscriber loop
interface circuit (SLIC) is optimized for low cost, while
still providing a satisfactory set of features. This part
is a pin-for-pin replacement for the Agere L9217 and
L9218 SLICs.
The L9219 requires a 5 V power supply and single
battery to operate. This device offers forward and
reverse battery operation. The rate of battery rever-
sal may be ramped to meet international require-
ments. Additionally, a low-power scan mode, wherein
all circuitry except the off-hook supervision is shut
down to conserve power, is available.
The dc current limit may be programmed via a single
external resistor. Via the logic table, the current limit
may be increased a nominal 42% above the value
set by the I
PROG
resistor, giving the user a high-low
current limit option.
Device overhead is fixed and is adequate for
3.14 dBm into 900
鈩?/div>
of on-hook transmission.
Both the loop supervision and ring trip supervision
functions are offered with user-controlled thresholds
via external resistors.
The L9219 is offered with a receive gain that is opti-
mized for interface to a first-generation type codec
(L9219A). It is also offered with a gain option that is
optimized for interface to a third- or fourth-generation
type codec (L9219G). In both cases, minimizing
external components required at this interface.
Data control is via a parallel data control scheme.
The device is available in a 28-pin PLCC package. It
is built by using a 90 V complementary bipolar
(CBIC) process.
Basic forward/reverse battery SLIC functionality at
a low cost
Pin compatible with Agere Systems Inc. L9217 and
L9218 SLICs
Low active power (typical 138 mW during on-hook
transmission)
Low-power scan mode for low-power, on-hook
power dissipation (52 mW typical)
Distortion-free, on-hook transmission
Convenient operating states:
鈥?Forward active-low current limit
鈥?Forward active-high current limit
鈥?Reverse active-low current limit
鈥?Reverse active-high current limit
鈥?Low-power scan
鈥?Disconnect (high impedance)
Minimal external components required
Two gain options to optimize the codec interface
Adjustable supervision functions:
鈥?Off-hook detector with hysteresis
鈥?Ring trip detector
Logic controlled high and low current limit
Ramped rate of battery reversal
Thermal protection with thermal shutdown indica-
tion
s
s
s
s
s
s
s
s
s
s
s

L9219A相關(guān)型號PDF文件下載

  • 型號
    版本
    描述
    廠商
    下載
  • 英文版
    Low-Cost Ringing SLIC
    AGERE
  • 英文版
    Low-Cost Ringing SLIC
    AGERE [Age...
  • 英文版
    Short-Loop Sine Wave Ringing SLIC
    AGERE
  • 英文版
    Short-Loop Sine Wave Ringing SLIC
    AGERE [Age...
  • 英文版
    Short-Loop Ringing SLIC with Ground Start
    AGERE
  • 英文版
    Short-Loop Ringing SLIC with Ground Start
    AGERE [Age...
  • 英文版
    Low-Cost Line Interface with Reverse Battery and PPM
    AGERE
  • 英文版
    Low-Cost Line Interface with Reverse Battery and PPM
    AGERE [Age...
  • 英文版
    Low-Cost Line Interface
    AGERE
  • 英文版
    Low-Cost Line Interface
    AGERE [Age...
  • 英文版
    Low-Cost Line Interface with Reverse Battery and Dual Curren...
    AGERE
  • 英文版
    Low-Cost Line Interface with Reverse Battery and Dual Curren...
    AGERE [Age...

您可能感興趣的PDF文件資料

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！