- 您現在的位置：買賣IC網 > PDF目錄367494 > L9217A CAP CER 2700PF 3.15KVDC R3 RAD PDF資料下載
參數資料
| 型號： | L9217A |
| 英文描述： | CAP CER 2700PF 3.15KVDC R3 RAD |
| 中文描述： | 低成本線接口，具有反向電池和PPM |
| 文件頁數： | 20/30頁 |
| 文件大小： | 414K |
| 代理商： | L9217A |
第1頁第2頁第3頁第4頁第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頁當前第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
20
Agere Systems Inc.
Data Sheet
November 2001
with Reverse Battery and PPM
L9217A/G Low-Cost Line Interface
Applications
(continued)
dc Applications
(continued)
Rate of Battery Reversal
The rate of battery reversal is controlled or ramped by
capacitors FB1 and FB2. A chart showing FB1/FB2 val-
ues versus typical ramp rate is given below. Leave
FB1/FB2 open if it is not desired to ramp the rate of
battery reversal.
Table 13. FB1/FB2 Values vs. Typical Ramp Time
Loop Range
The equation below can be rearranged to provide the
loop range for a required loop current:
Off-Hook Detection
The loop closure detection threshold is set by resistor
R
LCTH
. The supervision output bit NSTAT is high in an
on-hook condition. The off-hook comparator goes low
during an off-hook condition:
Figure 14. Off-Hook Detection Circuit
C
FB1
/C
FB2
0.01
μ
F
0.1
μ
F
0.22
μ
F
0.47
μ
F
1.0
μ
F
1.22
μ
F
1.3
μ
F
1.4
μ
F
1.6
μ
F
Transition Time
20 ms
220 ms
440 ms
900 ms
1.8 s
2.25 s
2.5 s
2.7 s
3.2 s
R
L
----------------------------
I
L
2R
P
–
R
DC
–
=
I
TR
(mA) = 0.4167 R
LTCH
(k
) –1.9 mA
ACTIVE off-hook to on-hook
I
TR
(mA) = 0.4167 R
LTCH
(k
) + 2.7 mA
SCAN on-hook to off-hook
R
L
ITR
R
P
R
P
RING
–
+
–
+
DCOUT
R
LCTH
LCTH
NSTAT
TIP
0.125 V/mA
0.05 mA
12-2553 (F)
相關PDF資料 |
PDF描述 |
|---|---|
| L9218A | CAP CER 330PF 3.15KVDC R3 RAD |
| L9219A | CAP CER 390PF 3.15KVDC R3 RAD |
| L9310 | Line Interface and Line Access Circuit Full-Feature SLIC,Ringing Relay,and Test Access Device |
| L9311 | Line Interface and Line Access Circuit Full-Feature SLIC with High Longitudinal Balance, Ringing Relay,and GR-909 Test Access |
| L9312 | Line Interface and Line Access Circuit Forward Battery SLIC and Ringing Relay for TR-57 Applications |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| 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:功率驅動器IC Quad Inv Tran Switch RoHS:否 制造商:Micrel 產品: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 |
發布緊急采購，3分鐘左右您將得到回復。