參數(shù)資料
型號： STLC3080
廠商： 意法半導(dǎo)體
英文描述： SUBSCRIBER LINE INTERFACE CIRCUIT
中文描述： 用戶線路接口電路
文件頁數(shù)： 21/23頁
文件大?。?/td> 201K
代理商： STLC3080
RS1 must be connected to the positive RR; RR
should be connecteddirectly to the ringing gener-
ator as it is in the figure. The ratio between RS1
and RR must be chosen considering that there is
an offset current in the input stage equal to
7.5
μ
A. This offset has been introduced to take in
account the leackage current of the line.
In fig.D2 is shown the relation between the CRT
charging current I
CRT
and the line current I
LINE
. In
the range -30
μ
A<ICRT<+30
μ
A ICRT is propor-
tional to ILINE while it remains limited to
±
30
μ
A
for higher value of I
LINE
. Consequently,in case of
short loops, the ring-trip detection time is inde-
pendent on the loop resistance, as the CRT
charging is performed at a fixed current. In case
of long loops the detection time will increase as
the I
CRT
decreases proportionally to the loop re-
sistance.
I
CRT
I
LINE
-30uA
+30uA
I
LINE
th=7.5mA(typ)
(if RR=600
and RS1=RS2=600K
)
I
LINE
th=I
th
RS1/RR
Figure D2. relationbetween Icrt and Iline.
Vring=60Vrms @ f=25Hz
VB=-48Volt
DET
RING
wire
CRT
OFF_HOOK
RING-TRIP DETECTION
FigureD3. Ring Trip detection signals.
STLC3080
21/23
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STLC3080EVAL 功能描述:網(wǎng)絡(luò)開發(fā)工具 Eval Board STLC3080 RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
STLC3080R-EVAL 功能描述:網(wǎng)絡(luò)開發(fā)工具 Eval Board STLC30R80 RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
STLC3080S 功能描述:射頻無線雜項(xiàng) Subscriber Ln Intrfc RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel
STLC3080TR 功能描述:電信線路管理 IC SUBSCRIBER CIRCUIT RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
STLC3085 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Integrated Pots Interface for Home Access Gateway and WLL
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