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參數(shù)資料
| 型號(hào)： | L9218A |
| 英文描述： | CAP CER 330PF 3.15KVDC R3 RAD |
| 中文描述： | 低成本線接口 |
| 文件頁數(shù)： | 5/30頁 |
| 文件大小： | 378K |
| 代理商： | L9218A |
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Agere Systems Inc.
5
Data Sheet
November 2001
L9218A/G Low-Cost Line Interface
Pin Information
(continued)
Table 1. Pin Descriptions
(continued)
PLCC
7
Symbol
LCTH
Type
I
Description
Loop Closure Threshold Input.
Connect a resistor to VTX to set off-hook
threshold.
dc Output Voltage.
This output is a voltage that is directly proportional to the
absolute value of the differential tip/ring current.
Battery Supply.
Negative high-voltage power supply.
Protected Ring.
The output of the ring driver amplifier and input to loop sens-
ing circuitry. Connect to the loop through overvoltage protection.
Filter Capacitor 2.
Connect a 0.1
μ
F capacitor from this pin to AGND.
Filter Capacitor 1.
Connect a 0.47
μ
F capacitor from this pin to pin CF2.
Dummy Pin.
Used for exact pin-for-pin compatibility with L9219. There is no
physical connection to this pin, however, it may be connected to the B2 control
latch to get an exact PWB footprint match with L9219.
State Control Input.
B0 and B1 determine the state of the SLIC. See Table 2.
Pin B1 has an internal pull-down.
State Control Input.
B0 and B1 determine the state of the SLIC. See Table 2.
Pin B0 has an internal pull-down.
Analog Signal Ground.
Battery Ground.
Ground return for the battery supply.
Protected Tip.
The output of the tip driver amplifier and input to loop-sensing
circuitry. Connect to loop through overvoltage protection.
Ring Trip Sense Negative.
Connect this pin to the ringing generator signal
through a high-value resistor.
Ring Trip Sense Positive.
Connect this pin to the ring relay and the ringer
series resistor through a high-value resistor.
No Connect.
Loop Detector Output/Ring Trip Detector Output.
When low, this logic out-
put indicates that an off-hook condition exists or that ringing is tripped.
Transmit ac Output Voltage.
This output is a voltage that is directly propor-
tional to the differential tip/ring current.
ac/dc Separation.
Connect a 0.1
μ
F capacitor from this point to VTX.
8
DCOUT
O
9
10
V
BAT
PR
—
I/O
11
12
13
CF2
CF1
B2/NC
—
—
—
14
B1
I
15
B0
I
16
17
18
AGND
BGND
PT
—
—
I/O
19
RTSN
I
20
RTSP
I
21
22
NC
—
O
NSTAT
23
VITR
O
24
25
TXI
VTX
—
O
Transmit ac/dc Output Voltage.
This output is a voltage that is directly pro-
portional to the differential tip/ring current.
Transmit Gain.
Connect an 8.06 k
from TG to VTX to set the transmit gain of
the SLIC.
Thermal Shutdown.
When high, this logic output indicates the device is in
thermal shutdown.
No Connect.
26
TG
—
27
TSD
O
28
NC
—
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(qū)動(dòng)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(shí)間: 下降時(shí)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L9222_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD INVERTING TRANSISTOR SWITCH |
| L9222D | 功能描述:功率驅(qū)動(dòng)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(shí)間: 下降時(shí)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L9222-D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:QUAD INVERTING TRANSISTOR SWITCH |
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