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參數(shù)資料
| 型號： | LCP-1250D4WDRT |
| 廠商： | Delta Electronics, Inc. |
| 英文描述： | RoHS Compliant Single Mode SFP Transceiver for GbE and Fiber Channel |
| 中文描述： | 符合RoHS單模SFP收發(fā)器通道的千兆以太網(wǎng)和光纖 |
| 文件頁數(shù)： | 6/13頁 |
| 文件大?。?/td> | 257K |
| 代理商： | LCP-1250D4WDRT |
DELTA ELECTRONICS, INC.
6
Aug., 2006
Rev. 6A
www.deltaww.com
module and is thus not required on the host board. The voltage swing on these lines will be between
370 and 2000 mV differential (185 – 1000 mV single ended) when properly terminated.
7) VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V ±5% at the
SFP connector pin. Maximum supply current is 300mA. Recommended host board power supply
filtering is shown below. Inductors with DC resistance of less than 1 ohm should be used in order to
maintain the required voltage at the SFP input pin with 3.3V supply voltage. When the recommended
supply-filtering network is used, hot plugging of the SFP transceiver module will result in an inrush
current of no more than 30mA greater than the steady state value. VccR and VccT may be internally
connected within the SFP transceiver module.
8) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100
differential termination inside the module. The AC coupling is done inside the module and is thus not
required on the host board. The inputs will accept differential swings of 500 – 2400 mV (250 – 1200
mV single-ended), though it is recommended that values between 500 and 1200 mV differential (250 –
600 mV single-ended) be used for best EMI performance.
Recommend Circuit Schematic
Laser Diode
Photo Diode
1uH
1uH
0.1uF
10uF
0.1uF
0.01uF
0.01uF
0.01uF
0.01uF
0.1uF
10uF
RES1
RES1
100 Ohms*
RES1
RES1
RES1
10k Ohms
100 Ohms
VCC
Protocol Vcc
SerDes IC
Protocol IC
PLD / PAL
Mod_def 2
Mod_def 1
Mod_def 0
3.3V
3.3V
DELTA SFP Module
Preamp &
Tx_Disable
Tx_Fault
TD +
TD -
VeeT
RD +
RD -
Rx_LOS
VeeR
Tx_Disable
Tx_Fault
Rx_LOS
RES1 = 4.7k to 10k Ohms
VccT
VccR
Laser Driver
* Depands on SerDes IC used
EEPROM
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