LCP-155B4MDRX-0B Delta Electronics, Inc., LCP-155B4MDRX-0B Datasheet - Page 6

• Manufacturer Part Number: LCP-155B4MDRX-0B
• Description: Rohs Compliant Sfp Transceiver For Atm, Sonet Oc-3/sdh Stm-1 With Digital Diagnostic Monitoring Function
• Manufacturer: Delta Electronics, Inc.

7)
8) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω
Recommend Circuit Schematic
DELTA ELECTRONICS, INC.
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.
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.
VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V ±5% at the SFP
Protocol IC
Protocol Vcc
Tx_Disable
Tx_Fault
Rx_LOS
SerDes IC
PLD / PAL
VCC
RES1
RES1 = 4.7k to 10k Ohms
* Depands on SerDes IC used
100 Ohms*
RES1
3.3V
3.3V
RES1
10uF
RES1
6
RES1
0.1uF
1uH
1uH
10uF
Mod_def 2
Mod_def 1
Mod_def 0
Tx_Disable
Rx_LOS
Tx_Fault
0.1uF
TD +
TD -
VeeT
RD +
RD -
VeeR
0.1uF
VccT
VccR
0.01uF
0.01uF
0.01uF
0.01uF
DELTA SFP Module
100 Ohms
www.deltaww.com
Laser Driver
Preamp &
Quantizer
EEPROM
10k Ohms
Photo Diode
Laser Diode
2008/1/31
Rev. 0B