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參數(shù)資料
| 型號(hào)： | 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)： | 16/23頁 |
| 文件大小： | 201K |
| 代理商： | STLC3080 |
STLC3080: allowedRfeed values vs. Ilim
The STLC3080 device has been designed in or-
der to fit in a small SMD package (TQFP44). This
target has been achieved by using a dedicated
circuit for power management based on one ex-
ternaltransistor(Qext).
The particular power management circuit adopted
allows to define the percentage of power dissi-
pated on the SLIC itself and on the Qext. The
sharing percentageis defined by the Rfeed value,
in particular the higher is Rfeed, the higher is the
percentage dissipatedon the SLIC.
Rfeed represents the DC feeding impedance at
TIP/RING terminals (including 2xRp) when the
SLIC is in the resistive feed region of the DC
characteristics.
Since the max. power dissipation inside the SLIC
is limited it is important to know which value of
Rfeed can be implemented without exceeding the
max power allowed in the SLIC.
In order to define the allowed Rfeed values sev-
eral other parameters should be considered, in
particular:
Pdslic:
Max allowed power dissipation on SLIC, two val-
ues are considered:
1.1W for 70
°
CT
amb
application;
0.9W for 85
°
CT
amb
application;
Pdqext:
Max allowed power dissipation on Qext,three val-
ues are considered:
1.0W
1.5W
2.0W
These values depend on the packageand the as-
semblyof the Qext.
Ilim:
Programmed constant current value, continuous
variationsare consideredfrom 20mA to 50mA.
Vbat:
Batteryvoltage, threevalues are considered:
48V
54V
62V
The following diagrams show the allowed Rfeed
values dependingon the above parameters.three
diagrams are shown eachone for a particularbat-
tery (Vbat = -48V, -54V, -60V).
In each diagrams you can find an upper and a
lower limits for the Rfeed value:
The upper limit is definedby one of the two b1, b2
curves.
b1 is the limit when max. power on SLIC is
equalto 0.9W(T
amb
= 85
°
C)
b2 is the limit when max. power on SLIC is
equalto 1.1W(Tamb = 70
°
C)
The lower limit is defined by one of the three a1,
a2, a3 curves.
a1 is the limit when max. power allowed on
Qext is equal to 1.0W
a2 is the limit when max. power allowed on
Qext is equal to 1.5W
a3 is the limit when max. power allowed on
Qext is equal to 2.0W
Figure B1. Rfeed allowed valuesvs. Ilim (Vbat = -48V).
APPENDIX B
STLC3080
16/23
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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(píng)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(píng)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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